reactos/dll/win32/uxtheme/system.c

   1 /*
   2  * Win32 5.1 Theme system
   3  *
   4  * Copyright (C) 2003 Kevin Koltzau
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "winreg.h"
  31 #include "vfwmsgs.h"
  32 #include "uxtheme.h"
  33 #include "tmschema.h"
  34
  35 #include "uxthemedll.h"
  36 #include "msstyles.h"
  37
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(uxtheme);
  41
  42 /***********************************************************************
  43  * Defines and global variables
  44  */
  45
  46 static const WCHAR szThemeManager[] = {
  47     'S','o','f','t','w','a','r','e','\\',
  48     'M','i','c','r','o','s','o','f','t','\\',
  49     'W','i','n','d','o','w','s','\\',
  50     'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  51     'T','h','e','m','e','M','a','n','a','g','e','r','\0'
  52 };
  53 static const WCHAR szThemeActive[] = {'T','h','e','m','e','A','c','t','i','v','e','\0'};
  54 static const WCHAR szSizeName[] = {'S','i','z','e','N','a','m','e','\0'};
  55 static const WCHAR szColorName[] = {'C','o','l','o','r','N','a','m','e','\0'};
  56 static const WCHAR szDllName[] = {'D','l','l','N','a','m','e','\0'};
  57
  58 static const WCHAR szIniDocumentation[] = {'d','o','c','u','m','e','n','t','a','t','i','o','n','\0'};
  59
  60 HINSTANCE hDllInst;
  61 ATOM atDialogThemeEnabled;
  62
  63 static DWORD dwThemeAppProperties = STAP_ALLOW_NONCLIENT | STAP_ALLOW_CONTROLS;
  64 static ATOM atWindowTheme;
  65 static ATOM atSubAppName;
  66 static ATOM atSubIdList;
  67
  68 static BOOL bThemeActive = FALSE;
  69 static WCHAR szCurrentTheme[MAX_PATH];
  70 static WCHAR szCurrentColor[64];
  71 static WCHAR szCurrentSize[64];
  72
  73 /***********************************************************************/
  74
  75 static BOOL CALLBACK UXTHEME_broadcast_msg_enumchild (HWND hWnd, LPARAM msg)
  76 {
  77     PostMessageW(hWnd, msg, 0, 0);
  78     return TRUE;
  79 }
  80
  81 /* Broadcast a message to *all* windows, including children */
  82 static BOOL CALLBACK UXTHEME_broadcast_msg (HWND hWnd, LPARAM msg)
  83 {
  84     if (hWnd == NULL)
  85     {
  86         EnumWindows (UXTHEME_broadcast_msg, msg);
  87     }
  88     else
  89     {
  90         PostMessageW(hWnd, msg, 0, 0);
  91         EnumChildWindows (hWnd, UXTHEME_broadcast_msg_enumchild, msg);
  92     }
  93     return TRUE;
  94 }
  95
  96 /* At the end of the day this is a subset of what SHRegGetPath() does - copied
  97  * here to avoid linking against shlwapi. */
  98 static DWORD query_reg_path (HKEY hKey, LPCWSTR lpszValue,
  99                              LPVOID pvData)
 100 {
 101   DWORD dwRet, dwType, dwUnExpDataLen = MAX_PATH, dwExpDataLen;
 102
 103   TRACE("(hkey=%p,%s,%p)\n", hKey, debugstr_w(lpszValue),
 104         pvData);
 105
 106   dwRet = RegQueryValueExW(hKey, lpszValue, 0, &dwType, pvData, &dwUnExpDataLen);
 107   if (dwRet!=ERROR_SUCCESS && dwRet!=ERROR_MORE_DATA)
 108       return dwRet;
 109
 110   if (dwType == REG_EXPAND_SZ)
 111   {
 112     DWORD nBytesToAlloc;
 113
 114     /* Expand type REG_EXPAND_SZ into REG_SZ */
 115     LPWSTR szData;
 116
 117     /* If the caller didn't supply a buffer or the buffer is too small we have
 118      * to allocate our own
 119      */
 120     if (dwRet == ERROR_MORE_DATA)
 121     {
 122       WCHAR cNull = '\0';
 123       nBytesToAlloc = dwUnExpDataLen;
 124
 125       szData = LocalAlloc(LMEM_ZEROINIT, nBytesToAlloc);
 126       RegQueryValueExW (hKey, lpszValue, 0, NULL, (LPBYTE)szData, &nBytesToAlloc);
 127       dwExpDataLen = ExpandEnvironmentStringsW(szData, &cNull, 1);
 128       dwUnExpDataLen = max(nBytesToAlloc, dwExpDataLen);
 129       LocalFree(szData);
 130     }
 131     else
 132     {
 133       nBytesToAlloc = (lstrlenW(pvData) + 1) * sizeof(WCHAR);
 134       szData = LocalAlloc(LMEM_ZEROINIT, nBytesToAlloc );
 135       lstrcpyW(szData, pvData);
 136       dwExpDataLen = ExpandEnvironmentStringsW(szData, pvData, MAX_PATH );
 137       if (dwExpDataLen > MAX_PATH) dwRet = ERROR_MORE_DATA;
 138       dwUnExpDataLen = max(nBytesToAlloc, dwExpDataLen);
 139       LocalFree(szData);
 140     }
 141   }
 142
 143   RegCloseKey(hKey);
 144   return dwRet;
 145 }
 146
 147 /***********************************************************************
 148  *      UXTHEME_LoadTheme
 149  *
 150  * Set the current active theme from the registry
 151  */
 152 static void UXTHEME_LoadTheme(void)
 153 {
 154     HKEY hKey;
 155     DWORD buffsize;
 156     HRESULT hr;
 157     WCHAR tmp[10];
 158     PTHEME_FILE pt;
 159
 160     /* Get current theme configuration */
 161     if(!RegOpenKeyW(HKEY_CURRENT_USER, szThemeManager, &hKey)) {
 162         TRACE("Loading theme config\n");
 163         buffsize = sizeof(tmp)/sizeof(tmp[0]);
 164         if(!RegQueryValueExW(hKey, szThemeActive, NULL, NULL, (LPBYTE)tmp, &buffsize)) {
 165             bThemeActive = (tmp[0] != '0');
 166         }
 167         else {
 168             bThemeActive = FALSE;
 169             TRACE("Failed to get ThemeActive: %d\n", GetLastError());
 170         }
 171         buffsize = sizeof(szCurrentColor)/sizeof(szCurrentColor[0]);
 172         if(RegQueryValueExW(hKey, szColorName, NULL, NULL, (LPBYTE)szCurrentColor, &buffsize))
 173             szCurrentColor[0] = '\0';
 174         buffsize = sizeof(szCurrentSize)/sizeof(szCurrentSize[0]);
 175         if(RegQueryValueExW(hKey, szSizeName, NULL, NULL, (LPBYTE)szCurrentSize, &buffsize))
 176             szCurrentSize[0] = '\0';
 177         if (query_reg_path (hKey, szDllName, szCurrentTheme))
 178             szCurrentTheme[0] = '\0';
 179         RegCloseKey(hKey);
 180     }
 181     else
 182         TRACE("Failed to open theme registry key\n");
 183
 184     if(bThemeActive) {
 185         /* Make sure the theme requested is actually valid */
 186         hr = MSSTYLES_OpenThemeFile(szCurrentTheme,
 187                                     szCurrentColor[0]?szCurrentColor:NULL,
 188                                     szCurrentSize[0]?szCurrentSize:NULL,
 189                                     &pt);
 190         if(FAILED(hr)) {
 191             bThemeActive = FALSE;
 192             szCurrentTheme[0] = '\0';
 193             szCurrentColor[0] = '\0';
 194             szCurrentSize[0] = '\0';
 195         }
 196         else {
 197             /* Make sure the global color & size match the theme */
 198             lstrcpynW(szCurrentColor, pt->pszSelectedColor, sizeof(szCurrentColor)/sizeof(szCurrentColor[0]));
 199             lstrcpynW(szCurrentSize, pt->pszSelectedSize, sizeof(szCurrentSize)/sizeof(szCurrentSize[0]));
 200
 201             MSSTYLES_SetActiveTheme(pt, FALSE);
 202             TRACE("Theme active: %s %s %s\n", debugstr_w(szCurrentTheme),
 203                 debugstr_w(szCurrentColor), debugstr_w(szCurrentSize));
 204             MSSTYLES_CloseThemeFile(pt);
 205         }
 206     }
 207     if(!bThemeActive) {
 208         MSSTYLES_SetActiveTheme(NULL, FALSE);
 209         TRACE("Theming not active\n");
 210     }
 211 }
 212
 213 /***********************************************************************/
 214
 215 static const char * const SysColorsNames[] =
 216 {
 217     "Scrollbar",                /* COLOR_SCROLLBAR */
 218     "Background",               /* COLOR_BACKGROUND */
 219     "ActiveTitle",              /* COLOR_ACTIVECAPTION */
 220     "InactiveTitle",            /* COLOR_INACTIVECAPTION */
 221     "Menu",                     /* COLOR_MENU */
 222     "Window",                   /* COLOR_WINDOW */
 223     "WindowFrame",              /* COLOR_WINDOWFRAME */
 224     "MenuText",                 /* COLOR_MENUTEXT */
 225     "WindowText",               /* COLOR_WINDOWTEXT */
 226     "TitleText",                /* COLOR_CAPTIONTEXT */
 227     "ActiveBorder",             /* COLOR_ACTIVEBORDER */
 228     "InactiveBorder",           /* COLOR_INACTIVEBORDER */
 229     "AppWorkSpace",             /* COLOR_APPWORKSPACE */
 230     "Hilight",                  /* COLOR_HIGHLIGHT */
 231     "HilightText",              /* COLOR_HIGHLIGHTTEXT */
 232     "ButtonFace",               /* COLOR_BTNFACE */
 233     "ButtonShadow",             /* COLOR_BTNSHADOW */
 234     "GrayText",                 /* COLOR_GRAYTEXT */
 235     "ButtonText",               /* COLOR_BTNTEXT */
 236     "InactiveTitleText",        /* COLOR_INACTIVECAPTIONTEXT */
 237     "ButtonHilight",            /* COLOR_BTNHIGHLIGHT */
 238     "ButtonDkShadow",           /* COLOR_3DDKSHADOW */
 239     "ButtonLight",              /* COLOR_3DLIGHT */
 240     "InfoText",                 /* COLOR_INFOTEXT */
 241     "InfoWindow",               /* COLOR_INFOBK */
 242     "ButtonAlternateFace",      /* COLOR_ALTERNATEBTNFACE */
 243     "HotTrackingColor",         /* COLOR_HOTLIGHT */
 244     "GradientActiveTitle",      /* COLOR_GRADIENTACTIVECAPTION */
 245     "GradientInactiveTitle",    /* COLOR_GRADIENTINACTIVECAPTION */
 246     "MenuHilight",              /* COLOR_MENUHILIGHT */
 247     "MenuBar",                  /* COLOR_MENUBAR */
 248 };
 249 static const WCHAR strColorKey[] =
 250     { 'C','o','n','t','r','o','l',' ','P','a','n','e','l','\\',
 251       'C','o','l','o','r','s',0 };
 252 static const WCHAR keyFlatMenus[] = { 'F','l','a','t','M','e','n','u', 0};
 253 static const WCHAR keyGradientCaption[] = { 'G','r','a','d','i','e','n','t',
 254                                             'C','a','p','t','i','o','n', 0 };
 255 static const WCHAR keyNonClientMetrics[] = { 'N','o','n','C','l','i','e','n','t',
 256                                              'M','e','t','r','i','c','s',0 };
 257 static const WCHAR keyIconTitleFont[] = { 'I','c','o','n','T','i','t','l','e',
 258                                           'F','o','n','t',0 };
 259
 260 static const struct BackupSysParam
 261 {
 262     int spiGet, spiSet;
 263     const WCHAR* keyName;
 264 } backupSysParams[] =
 265 {
 266     {SPI_GETFLATMENU, SPI_SETFLATMENU, keyFlatMenus},
 267     {SPI_GETGRADIENTCAPTIONS, SPI_SETGRADIENTCAPTIONS, keyGradientCaption},
 268     {-1, -1, 0}
 269 };
 270
 271 #define NUM_SYS_COLORS     (COLOR_MENUBAR+1)
 272
 273 static void save_sys_colors (HKEY baseKey)
 274 {
 275     char colorStr[13];
 276     HKEY hKey;
 277     int i;
 278
 279     if (RegCreateKeyExW( baseKey, strColorKey,
 280                          0, 0, 0, KEY_ALL_ACCESS,
 281                          0, &hKey, 0 ) == ERROR_SUCCESS)
 282     {
 283         for (i = 0; i < NUM_SYS_COLORS; i++)
 284         {
 285             COLORREF col = GetSysColor (i);
 286
 287             sprintf (colorStr, "%d %d %d",
 288                 GetRValue (col), GetGValue (col), GetBValue (col));
 289
 290             RegSetValueExA (hKey, SysColorsNames[i], 0, REG_SZ,
 291                 (BYTE*)colorStr, strlen (colorStr)+1);
 292         }
 293         RegCloseKey (hKey);
 294     }
 295 }
 296
 297 /* Before activating a theme, query current system colors, certain settings
 298  * and backup them in the registry, so they can be restored when the theme
 299  * is deactivated */
 300 static void UXTHEME_BackupSystemMetrics(void)
 301 {
 302     HKEY hKey;
 303     const struct BackupSysParam* bsp = backupSysParams;
 304
 305     if (RegCreateKeyExW( HKEY_CURRENT_USER, szThemeManager,
 306                          0, 0, 0, KEY_ALL_ACCESS,
 307                          0, &hKey, 0) == ERROR_SUCCESS)
 308     {
 309         NONCLIENTMETRICSW ncm;
 310         LOGFONTW iconTitleFont;
 311
 312         /* back up colors */
 313         save_sys_colors (hKey);
 314
 315         /* back up "other" settings */
 316         while (bsp->spiGet >= 0)
 317         {
 318             DWORD value;
 319
 320             SystemParametersInfoW (bsp->spiGet, 0, &value, 0);
 321             RegSetValueExW (hKey, bsp->keyName, 0, REG_DWORD,
 322                 (LPBYTE)&value, sizeof (value));
 323
 324             bsp++;
 325         }
 326
 327         /* back up non-client metrics */
 328         memset (&ncm, 0, sizeof (ncm));
 329         ncm.cbSize = sizeof (ncm);
 330         SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, sizeof (ncm), &ncm, 0);
 331         RegSetValueExW (hKey, keyNonClientMetrics, 0, REG_BINARY, (LPBYTE)&ncm,
 332             sizeof (ncm));
 333         memset (&iconTitleFont, 0, sizeof (iconTitleFont));
 334         SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof (iconTitleFont),
 335             &iconTitleFont, 0);
 336         RegSetValueExW (hKey, keyIconTitleFont, 0, REG_BINARY,
 337             (LPBYTE)&iconTitleFont, sizeof (iconTitleFont));
 338
 339         RegCloseKey (hKey);
 340     }
 341 }
 342
 343 /* Read back old settings after a theme was deactivated */
 344 static void UXTHEME_RestoreSystemMetrics(void)
 345 {
 346     HKEY hKey;
 347     const struct BackupSysParam* bsp = backupSysParams;
 348
 349     if (RegOpenKeyExW (HKEY_CURRENT_USER, szThemeManager,
 350                        0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
 351     {
 352         HKEY colorKey;
 353
 354         /* read backed-up colors */
 355         if (RegOpenKeyExW (hKey, strColorKey,
 356                            0, KEY_QUERY_VALUE, &colorKey) == ERROR_SUCCESS)
 357         {
 358             int i;
 359             COLORREF sysCols[NUM_SYS_COLORS];
 360             int sysColsIndices[NUM_SYS_COLORS];
 361             int sysColCount = 0;
 362
 363             for (i = 0; i < NUM_SYS_COLORS; i++)
 364             {
 365                 DWORD type;
 366                 char colorStr[13];
 367                 DWORD count = sizeof(colorStr);
 368
 369                 if (RegQueryValueExA (colorKey, SysColorsNames[i], 0,
 370                     &type, (LPBYTE) colorStr, &count) == ERROR_SUCCESS)
 371                 {
 372                     int r, g, b;
 373                     if (sscanf (colorStr, "%d %d %d", &r, &g, &b) == 3)
 374                     {
 375                         sysColsIndices[sysColCount] = i;
 376                         sysCols[sysColCount] = RGB(r, g, b);
 377                         sysColCount++;
 378                     }
 379                 }
 380             }
 381             RegCloseKey (colorKey);
 382
 383             SetSysColors (sysColCount, sysColsIndices, sysCols);
 384         }
 385
 386         /* read backed-up other settings */
 387         while (bsp->spiGet >= 0)
 388         {
 389             DWORD value;
 390             DWORD count = sizeof(value);
 391             DWORD type;
 392
 393             if (RegQueryValueExW (hKey, bsp->keyName, 0,
 394                 &type, (LPBYTE)&value, &count) == ERROR_SUCCESS)
 395             {
 396                 SystemParametersInfoW (bsp->spiSet, 0, (LPVOID)value,
 397                     SPIF_UPDATEINIFILE);
 398             }
 399
 400             bsp++;
 401         }
 402
 403         /* read backed-up non-client metrics */
 404         {
 405             NONCLIENTMETRICSW ncm;
 406             LOGFONTW iconTitleFont;
 407             DWORD count = sizeof(ncm);
 408             DWORD type;
 409
 410             if (RegQueryValueExW (hKey, keyNonClientMetrics, 0,
 411                 &type, (LPBYTE)&ncm, &count) == ERROR_SUCCESS)
 412             {
 413                 SystemParametersInfoW (SPI_SETNONCLIENTMETRICS,
 414                     count, &ncm, SPIF_UPDATEINIFILE);
 415             }
 416
 417             count = sizeof(iconTitleFont);
 418
 419             if (RegQueryValueExW (hKey, keyIconTitleFont, 0,
 420                 &type, (LPBYTE)&iconTitleFont, &count) == ERROR_SUCCESS)
 421             {
 422                 SystemParametersInfoW (SPI_SETICONTITLELOGFONT,
 423                     count, &iconTitleFont, SPIF_UPDATEINIFILE);
 424             }
 425         }
 426
 427         RegCloseKey (hKey);
 428     }
 429 }
 430
 431 /* Make system settings persistent, so they're in effect even w/o uxtheme
 432  * loaded.
 433  * For efficiency reasons, only the last SystemParametersInfoW sets
 434  * SPIF_SENDWININICHANGE */
 435 static void UXTHEME_SaveSystemMetrics(void)
 436 {
 437     const struct BackupSysParam* bsp = backupSysParams;
 438     NONCLIENTMETRICSW ncm;
 439     LOGFONTW iconTitleFont;
 440
 441     save_sys_colors (HKEY_CURRENT_USER);
 442
 443     while (bsp->spiGet >= 0)
 444     {
 445         DWORD value;
 446
 447         SystemParametersInfoW (bsp->spiGet, 0, &value, 0);
 448         SystemParametersInfoW (bsp->spiSet, 0, (LPVOID)value,
 449             SPIF_UPDATEINIFILE);
 450
 451         bsp++;
 452     }
 453
 454     memset (&ncm, 0, sizeof (ncm));
 455     ncm.cbSize = sizeof (ncm);
 456     SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, sizeof (ncm), &ncm, 0);
 457     SystemParametersInfoW (SPI_SETNONCLIENTMETRICS, sizeof (ncm), &ncm,
 458         SPIF_UPDATEINIFILE);
 459
 460     memset (&iconTitleFont, 0, sizeof (iconTitleFont));
 461     SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof (iconTitleFont),
 462         &iconTitleFont, 0);
 463     SystemParametersInfoW (SPI_SETICONTITLELOGFONT, sizeof (iconTitleFont),
 464         &iconTitleFont, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
 465 }
 466
 467 /***********************************************************************
 468  *      UXTHEME_SetActiveTheme
 469  *
 470  * Change the current active theme
 471  */
 472 static HRESULT UXTHEME_SetActiveTheme(PTHEME_FILE tf)
 473 {
 474     HKEY hKey;
 475     WCHAR tmp[2];
 476     HRESULT hr;
 477
 478     if(tf && !bThemeActive) UXTHEME_BackupSystemMetrics();
 479     hr = MSSTYLES_SetActiveTheme(tf, TRUE);
 480     if(FAILED(hr))
 481         return hr;
 482     if(tf) {
 483         bThemeActive = TRUE;
 484         lstrcpynW(szCurrentTheme, tf->szThemeFile, sizeof(szCurrentTheme)/sizeof(szCurrentTheme[0]));
 485         lstrcpynW(szCurrentColor, tf->pszSelectedColor, sizeof(szCurrentColor)/sizeof(szCurrentColor[0]));
 486         lstrcpynW(szCurrentSize, tf->pszSelectedSize, sizeof(szCurrentSize)/sizeof(szCurrentSize[0]));
 487     }
 488     else {
 489         UXTHEME_RestoreSystemMetrics();
 490         bThemeActive = FALSE;
 491         szCurrentTheme[0] = '\0';
 492         szCurrentColor[0] = '\0';
 493         szCurrentSize[0] = '\0';
 494     }
 495
 496     TRACE("Writing theme config to registry\n");
 497     if(!RegCreateKeyW(HKEY_CURRENT_USER, szThemeManager, &hKey)) {
 498         tmp[0] = bThemeActive?'1':'0';
 499         tmp[1] = '\0';
 500         RegSetValueExW(hKey, szThemeActive, 0, REG_SZ, (const BYTE*)tmp, sizeof(WCHAR)*2);
 501         if(bThemeActive) {
 502             RegSetValueExW(hKey, szColorName, 0, REG_SZ, (const BYTE*)szCurrentColor,
 503                 (lstrlenW(szCurrentColor)+1)*sizeof(WCHAR));
 504             RegSetValueExW(hKey, szSizeName, 0, REG_SZ, (const BYTE*)szCurrentSize,
 505                 (lstrlenW(szCurrentSize)+1)*sizeof(WCHAR));
 506             RegSetValueExW(hKey, szDllName, 0, REG_SZ, (const BYTE*)szCurrentTheme,
 507                 (lstrlenW(szCurrentTheme)+1)*sizeof(WCHAR));
 508         }
 509         else {
 510             RegDeleteValueW(hKey, szColorName);
 511             RegDeleteValueW(hKey, szSizeName);
 512             RegDeleteValueW(hKey, szDllName);
 513
 514         }
 515         RegCloseKey(hKey);
 516     }
 517     else
 518         TRACE("Failed to open theme registry key\n");
 519
 520     UXTHEME_SaveSystemMetrics ();
 521
 522     return hr;
 523 }
 524
 525 /***********************************************************************
 526  *      UXTHEME_InitSystem
 527  */
 528 void UXTHEME_InitSystem(HINSTANCE hInst)
 529 {
 530     static const WCHAR szWindowTheme[] = {
 531         'u','x','_','t','h','e','m','e','\0'
 532     };
 533     static const WCHAR szSubAppName[] = {
 534         'u','x','_','s','u','b','a','p','p','\0'
 535     };
 536     static const WCHAR szSubIdList[] = {
 537         'u','x','_','s','u','b','i','d','l','s','t','\0'
 538     };
 539     static const WCHAR szDialogThemeEnabled[] = {
 540         'u','x','_','d','i','a','l','o','g','t','h','e','m','e','\0'
 541     };
 542
 543     hDllInst = hInst;
 544
 545     atWindowTheme        = GlobalAddAtomW(szWindowTheme);
 546     atSubAppName         = GlobalAddAtomW(szSubAppName);
 547     atSubIdList          = GlobalAddAtomW(szSubIdList);
 548     atDialogThemeEnabled = GlobalAddAtomW(szDialogThemeEnabled);
 549
 550     UXTHEME_LoadTheme();
 551 }
 552
 553 /***********************************************************************
 554  *      IsAppThemed                                         (UXTHEME.@)
 555  */
 556 BOOL WINAPI IsAppThemed(void)
 557 {
 558     return IsThemeActive();
 559 }
 560
 561 /***********************************************************************
 562  *      IsThemeActive                                       (UXTHEME.@)
 563  */
 564 BOOL WINAPI IsThemeActive(void)
 565 {
 566     TRACE("\n");
 567     SetLastError(ERROR_SUCCESS);
 568     return bThemeActive;
 569 }
 570
 571 /***********************************************************************
 572  *      EnableTheming                                       (UXTHEME.@)
 573  *
 574  * NOTES
 575  * This is a global and persistent change
 576  */
 577 HRESULT WINAPI EnableTheming(BOOL fEnable)
 578 {
 579     HKEY hKey;
 580     WCHAR szEnabled[] = {'0','\0'};
 581
 582     TRACE("(%d)\n", fEnable);
 583
 584     if(fEnable != bThemeActive) {
 585         if(fEnable)
 586             UXTHEME_BackupSystemMetrics();
 587         else
 588             UXTHEME_RestoreSystemMetrics();
 589         UXTHEME_SaveSystemMetrics ();
 590         bThemeActive = fEnable;
 591         if(bThemeActive) szEnabled[0] = '1';
 592         if(!RegOpenKeyW(HKEY_CURRENT_USER, szThemeManager, &hKey)) {
 593             RegSetValueExW(hKey, szThemeActive, 0, REG_SZ, (LPBYTE)szEnabled, sizeof(WCHAR));
 594             RegCloseKey(hKey);
 595         }
 596         UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
 597     }
 598     return S_OK;
 599 }
 600
 601 /***********************************************************************
 602  *      UXTHEME_SetWindowProperty
 603  *
 604  * I'm using atoms as there may be large numbers of duplicated strings
 605  * and they do the work of keeping memory down as a cause of that quite nicely
 606  */
 607 static HRESULT UXTHEME_SetWindowProperty(HWND hwnd, ATOM aProp, LPCWSTR pszValue)
 608 {
 609     ATOM oldValue = (ATOM)(size_t)RemovePropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp));
 610     if(oldValue)
 611         DeleteAtom(oldValue);
 612     if(pszValue) {
 613         ATOM atValue = AddAtomW(pszValue);
 614         if(!atValue
 615            || !SetPropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp), (LPWSTR)MAKEINTATOM(atValue))) {
 616             HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
 617             if(atValue) DeleteAtom(atValue);
 618             return hr;
 619         }
 620     }
 621     return S_OK;
 622 }
 623
 624 static LPWSTR UXTHEME_GetWindowProperty(HWND hwnd, ATOM aProp, LPWSTR pszBuffer, int dwLen)
 625 {
 626     ATOM atValue = (ATOM)(size_t)GetPropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp));
 627     if(atValue) {
 628         if(GetAtomNameW(atValue, pszBuffer, dwLen))
 629             return pszBuffer;
 630         TRACE("property defined, but unable to get value\n");
 631     }
 632     return NULL;
 633 }
 634
 635 /***********************************************************************
 636  *      OpenThemeData                                       (UXTHEME.@)
 637  */
 638 HTHEME WINAPI OpenThemeData(HWND hwnd, LPCWSTR pszClassList)
 639 {
 640     WCHAR szAppBuff[256];
 641     WCHAR szClassBuff[256];
 642     LPCWSTR pszAppName;
 643     LPCWSTR pszUseClassList;
 644     HTHEME hTheme = NULL;
 645     TRACE("(%p,%s)\n", hwnd, debugstr_w(pszClassList));
 646
 647     if(bThemeActive)
 648     {
 649         pszAppName = UXTHEME_GetWindowProperty(hwnd, atSubAppName, szAppBuff, sizeof(szAppBuff)/sizeof(szAppBuff[0]));
 650         /* If SetWindowTheme was used on the window, that overrides the class list passed to this function */
 651         pszUseClassList = UXTHEME_GetWindowProperty(hwnd, atSubIdList, szClassBuff, sizeof(szClassBuff)/sizeof(szClassBuff[0]));
 652         if(!pszUseClassList)
 653             pszUseClassList = pszClassList;
 654
 655         if (pszUseClassList)
 656             hTheme = MSSTYLES_OpenThemeClass(pszAppName, pszUseClassList);
 657     }
 658     if(IsWindow(hwnd))
 659         SetPropW(hwnd, (LPCWSTR)MAKEINTATOM(atWindowTheme), hTheme);
 660     TRACE(" = %p\n", hTheme);
 661     return hTheme;
 662 }
 663
 664 /***********************************************************************
 665  *      GetWindowTheme                                      (UXTHEME.@)
 666  *
 667  * Retrieve the last theme opened for a window.
 668  *
 669  * PARAMS
 670  *  hwnd  [I] window to retrieve the theme for
 671  *
 672  * RETURNS
 673  *  The most recent theme.
 674  */
 675 HTHEME WINAPI GetWindowTheme(HWND hwnd)
 676 {
 677     TRACE("(%p)\n", hwnd);
 678     return GetPropW(hwnd, (LPCWSTR)MAKEINTATOM(atWindowTheme));
 679 }
 680
 681 /***********************************************************************
 682  *      SetWindowTheme                                      (UXTHEME.@)
 683  *
 684  * Persistent through the life of the window, even after themes change
 685  */
 686 HRESULT WINAPI SetWindowTheme(HWND hwnd, LPCWSTR pszSubAppName,
 687                               LPCWSTR pszSubIdList)
 688 {
 689     HRESULT hr;
 690     TRACE("(%p,%s,%s)\n", hwnd, debugstr_w(pszSubAppName),
 691           debugstr_w(pszSubIdList));
 692     hr = UXTHEME_SetWindowProperty(hwnd, atSubAppName, pszSubAppName);
 693     if(SUCCEEDED(hr))
 694         hr = UXTHEME_SetWindowProperty(hwnd, atSubIdList, pszSubIdList);
 695     if(SUCCEEDED(hr))
 696         UXTHEME_broadcast_msg (hwnd, WM_THEMECHANGED);
 697     return hr;
 698 }
 699
 700 /***********************************************************************
 701  *      GetCurrentThemeName                                 (UXTHEME.@)
 702  */
 703 HRESULT WINAPI GetCurrentThemeName(LPWSTR pszThemeFileName, int dwMaxNameChars,
 704                                    LPWSTR pszColorBuff, int cchMaxColorChars,
 705                                    LPWSTR pszSizeBuff, int cchMaxSizeChars)
 706 {
 707     if(!bThemeActive)
 708         return E_PROP_ID_UNSUPPORTED;
 709     if(pszThemeFileName) lstrcpynW(pszThemeFileName, szCurrentTheme, dwMaxNameChars);
 710     if(pszColorBuff) lstrcpynW(pszColorBuff, szCurrentColor, cchMaxColorChars);
 711     if(pszSizeBuff) lstrcpynW(pszSizeBuff, szCurrentSize, cchMaxSizeChars);
 712     return S_OK;
 713 }
 714
 715 /***********************************************************************
 716  *      GetThemeAppProperties                               (UXTHEME.@)
 717  */
 718 DWORD WINAPI GetThemeAppProperties(void)
 719 {
 720     return dwThemeAppProperties;
 721 }
 722
 723 /***********************************************************************
 724  *      SetThemeAppProperties                               (UXTHEME.@)
 725  */
 726 void WINAPI SetThemeAppProperties(DWORD dwFlags)
 727 {
 728     TRACE("(0x%08x)\n", dwFlags);
 729     dwThemeAppProperties = dwFlags;
 730 }
 731
 732 /***********************************************************************
 733  *      CloseThemeData                                      (UXTHEME.@)
 734  */
 735 HRESULT WINAPI CloseThemeData(HTHEME hTheme)
 736 {
 737     TRACE("(%p)\n", hTheme);
 738     if(!hTheme)
 739         return E_HANDLE;
 740     return MSSTYLES_CloseThemeClass(hTheme);
 741 }
 742
 743 /***********************************************************************
 744  *      HitTestThemeBackground                              (UXTHEME.@)
 745  */
 746 HRESULT WINAPI HitTestThemeBackground(HTHEME hTheme, HDC hdc, int iPartId,
 747                                      int iStateId, DWORD dwOptions,
 748                                      const RECT *pRect, HRGN hrgn,
 749                                      POINT ptTest, WORD *pwHitTestCode)
 750 {
 751     FIXME("%d %d 0x%08x: stub\n", iPartId, iStateId, dwOptions);
 752     if(!hTheme)
 753         return E_HANDLE;
 754     return ERROR_CALL_NOT_IMPLEMENTED;
 755 }
 756
 757 /***********************************************************************
 758  *      IsThemePartDefined                                  (UXTHEME.@)
 759  */
 760 BOOL WINAPI IsThemePartDefined(HTHEME hTheme, int iPartId, int iStateId)
 761 {
 762     TRACE("(%p,%d,%d)\n", hTheme, iPartId, iStateId);
 763     if(!hTheme) {
 764         SetLastError(E_HANDLE);
 765         return FALSE;
 766     }
 767     if(MSSTYLES_FindPartState(hTheme, iPartId, iStateId, NULL))
 768         return TRUE;
 769     return FALSE;
 770 }
 771
 772 /***********************************************************************
 773  *      GetThemeDocumentationProperty                       (UXTHEME.@)
 774  *
 775  * Try and retrieve the documentation property from string resources
 776  * if that fails, get it from the [documentation] section of themes.ini
 777  */
 778 HRESULT WINAPI GetThemeDocumentationProperty(LPCWSTR pszThemeName,
 779                                              LPCWSTR pszPropertyName,
 780                                              LPWSTR pszValueBuff,
 781                                              int cchMaxValChars)
 782 {
 783     const WORD wDocToRes[] = {
 784         TMT_DISPLAYNAME,5000,
 785         TMT_TOOLTIP,5001,
 786         TMT_COMPANY,5002,
 787         TMT_AUTHOR,5003,
 788         TMT_COPYRIGHT,5004,
 789         TMT_URL,5005,
 790         TMT_VERSION,5006,
 791         TMT_DESCRIPTION,5007
 792     };
 793
 794     PTHEME_FILE pt;
 795     HRESULT hr;
 796     unsigned int i;
 797     int iDocId;
 798     TRACE("(%s,%s,%p,%d)\n", debugstr_w(pszThemeName), debugstr_w(pszPropertyName),
 799           pszValueBuff, cchMaxValChars);
 800
 801     hr = MSSTYLES_OpenThemeFile(pszThemeName, NULL, NULL, &pt);
 802     if(FAILED(hr)) return hr;
 803
 804     /* Try to load from string resources */
 805     hr = E_PROP_ID_UNSUPPORTED;
 806     if(MSSTYLES_LookupProperty(pszPropertyName, NULL, &iDocId)) {
 807         for(i=0; i<sizeof(wDocToRes)/sizeof(wDocToRes[0]); i+=2) {
 808             if(wDocToRes[i] == iDocId) {
 809                 if(LoadStringW(pt->hTheme, wDocToRes[i+1], pszValueBuff, cchMaxValChars)) {
 810                     hr = S_OK;
 811                     break;
 812                 }
 813             }
 814         }
 815     }
 816     /* If loading from string resource failed, try getting it from the theme.ini */
 817     if(FAILED(hr)) {
 818         PUXINI_FILE uf = MSSTYLES_GetThemeIni(pt);
 819         if(UXINI_FindSection(uf, szIniDocumentation)) {
 820             LPCWSTR lpValue;
 821             DWORD dwLen;
 822             if(UXINI_FindValue(uf, pszPropertyName, &lpValue, &dwLen)) {
 823                 lstrcpynW(pszValueBuff, lpValue, min(dwLen+1,cchMaxValChars));
 824                 hr = S_OK;
 825             }
 826         }
 827         UXINI_CloseINI(uf);
 828     }
 829
 830     MSSTYLES_CloseThemeFile(pt);
 831     return hr;
 832 }
 833
 834 /**********************************************************************
 835  *      Undocumented functions
 836  */
 837
 838 /**********************************************************************
 839  *      QueryThemeServices                                 (UXTHEME.1)
 840  *
 841  * RETURNS
 842  *     some kind of status flag
 843  */
 844 DWORD WINAPI QueryThemeServices(void)
 845 {
 846     FIXME("stub\n");
 847     return 3; /* This is what is returned under XP in most cases */
 848 }
 849
 850
 851 /**********************************************************************
 852  *      OpenThemeFile                                      (UXTHEME.2)
 853  *
 854  * Opens a theme file, which can be used to change the current theme, etc
 855  *
 856  * PARAMS
 857  *     pszThemeFileName    Path to a msstyles theme file
 858  *     pszColorName        Color defined in the theme, eg. NormalColor
 859  *     pszSizeName         Size defined in the theme, eg. NormalSize
 860  *     hThemeFile          Handle to theme file
 861  *
 862  * RETURNS
 863  *     Success: S_OK
 864  *     Failure: HRESULT error-code
 865  */
 866 HRESULT WINAPI OpenThemeFile(LPCWSTR pszThemeFileName, LPCWSTR pszColorName,
 867                              LPCWSTR pszSizeName, HTHEMEFILE *hThemeFile,
 868                              DWORD unknown)
 869 {
 870     TRACE("(%s,%s,%s,%p,%d)\n", debugstr_w(pszThemeFileName),
 871           debugstr_w(pszColorName), debugstr_w(pszSizeName),
 872           hThemeFile, unknown);
 873     return MSSTYLES_OpenThemeFile(pszThemeFileName, pszColorName, pszSizeName, (PTHEME_FILE*)hThemeFile);
 874 }
 875
 876 /**********************************************************************
 877  *      CloseThemeFile                                     (UXTHEME.3)
 878  *
 879  * Releases theme file handle returned by OpenThemeFile
 880  *
 881  * PARAMS
 882  *     hThemeFile           Handle to theme file
 883  *
 884  * RETURNS
 885  *     Success: S_OK
 886  *     Failure: HRESULT error-code
 887  */
 888 HRESULT WINAPI CloseThemeFile(HTHEMEFILE hThemeFile)
 889 {
 890     TRACE("(%p)\n", hThemeFile);
 891     MSSTYLES_CloseThemeFile(hThemeFile);
 892     return S_OK;
 893 }
 894
 895 /**********************************************************************
 896  *      ApplyTheme                                         (UXTHEME.4)
 897  *
 898  * Set a theme file to be the currently active theme
 899  *
 900  * PARAMS
 901  *     hThemeFile           Handle to theme file
 902  *     unknown              See notes
 903  *     hWnd                 Window requesting the theme change
 904  *
 905  * RETURNS
 906  *     Success: S_OK
 907  *     Failure: HRESULT error-code
 908  *
 909  * NOTES
 910  * I'm not sure what the second parameter is (the datatype is likely wrong), other then this:
 911  * Under XP if I pass
 912  * char b[] = "";
 913  *   the theme is applied with the screen redrawing really badly (flickers)
 914  * char b[] = "\0"; where \0 can be one or more of any character, makes no difference
 915  *   the theme is applied smoothly (screen does not flicker)
 916  * char *b = "\0" or NULL; where \0 can be zero or more of any character, makes no difference
 917  *   the function fails returning invalid parameter... very strange
 918  */
 919 HRESULT WINAPI ApplyTheme(HTHEMEFILE hThemeFile, char *unknown, HWND hWnd)
 920 {
 921     HRESULT hr;
 922     TRACE("(%p,%s,%p)\n", hThemeFile, unknown, hWnd);
 923     hr = UXTHEME_SetActiveTheme(hThemeFile);
 924     UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
 925     return hr;
 926 }
 927
 928 /**********************************************************************
 929  *      GetThemeDefaults                                   (UXTHEME.7)
 930  *
 931  * Get the default color & size for a theme
 932  *
 933  * PARAMS
 934  *     pszThemeFileName    Path to a msstyles theme file
 935  *     pszColorName        Buffer to receive the default color name
 936  *     dwColorNameLen      Length, in characters, of color name buffer
 937  *     pszSizeName         Buffer to receive the default size name
 938  *     dwSizeNameLen       Length, in characters, of size name buffer
 939  *
 940  * RETURNS
 941  *     Success: S_OK
 942  *     Failure: HRESULT error-code
 943  */
 944 HRESULT WINAPI GetThemeDefaults(LPCWSTR pszThemeFileName, LPWSTR pszColorName,
 945                                 DWORD dwColorNameLen, LPWSTR pszSizeName,
 946                                 DWORD dwSizeNameLen)
 947 {
 948     PTHEME_FILE pt;
 949     HRESULT hr;
 950     TRACE("(%s,%p,%d,%p,%d)\n", debugstr_w(pszThemeFileName),
 951           pszColorName, dwColorNameLen,
 952           pszSizeName, dwSizeNameLen);
 953
 954     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, NULL, &pt);
 955     if(FAILED(hr)) return hr;
 956
 957     lstrcpynW(pszColorName, pt->pszSelectedColor, dwColorNameLen);
 958     lstrcpynW(pszSizeName, pt->pszSelectedSize, dwSizeNameLen);
 959
 960     MSSTYLES_CloseThemeFile(pt);
 961     return S_OK;
 962 }
 963
 964 /**********************************************************************
 965  *      EnumThemes                                         (UXTHEME.8)
 966  *
 967  * Enumerate available themes, calls specified EnumThemeProc for each
 968  * theme found. Passes lpData through to callback function.
 969  *
 970  * PARAMS
 971  *     pszThemePath        Path containing themes
 972  *     callback            Called for each theme found in path
 973  *     lpData              Passed through to callback
 974  *
 975  * RETURNS
 976  *     Success: S_OK
 977  *     Failure: HRESULT error-code
 978  */
 979 HRESULT WINAPI EnumThemes(LPCWSTR pszThemePath, EnumThemeProc callback,
 980                           LPVOID lpData)
 981 {
 982     WCHAR szDir[MAX_PATH];
 983     WCHAR szPath[MAX_PATH];
 984     static const WCHAR szStar[] = {'*','.','*','\0'};
 985     static const WCHAR szFormat[] = {'%','s','%','s','\\','%','s','.','m','s','s','t','y','l','e','s','\0'};
 986     static const WCHAR szDisplayName[] = {'d','i','s','p','l','a','y','n','a','m','e','\0'};
 987     static const WCHAR szTooltip[] = {'t','o','o','l','t','i','p','\0'};
 988     WCHAR szName[60];
 989     WCHAR szTip[60];
 990     HANDLE hFind;
 991     WIN32_FIND_DATAW wfd;
 992     HRESULT hr;
 993     size_t pathLen;
 994
 995     TRACE("(%s,%p,%p)\n", debugstr_w(pszThemePath), callback, lpData);
 996
 997     if(!pszThemePath || !callback)
 998         return E_POINTER;
 999
1000     lstrcpyW(szDir, pszThemePath);
1001     pathLen = lstrlenW (szDir);
1002     if ((pathLen > 0) && (pathLen < MAX_PATH-1) && (szDir[pathLen - 1] != '\\'))
1003     {
1004         szDir[pathLen] = '\\';
1005         szDir[pathLen+1] = 0;
1006     }
1007
1008     lstrcpyW(szPath, szDir);
1009     lstrcatW(szPath, szStar);
1010     TRACE("searching %s\n", debugstr_w(szPath));
1011
1012     hFind = FindFirstFileW(szPath, &wfd);
1013     if(hFind != INVALID_HANDLE_VALUE) {
1014         do {
1015             if(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY
1016                && !(wfd.cFileName[0] == '.' && ((wfd.cFileName[1] == '.' && wfd.cFileName[2] == 0) || wfd.cFileName[1] == 0))) {
1017                 wsprintfW(szPath, szFormat, szDir, wfd.cFileName, wfd.cFileName);
1018
1019                 hr = GetThemeDocumentationProperty(szPath, szDisplayName, szName, sizeof(szName)/sizeof(szName[0]));
1020                 if(SUCCEEDED(hr))
1021                     hr = GetThemeDocumentationProperty(szPath, szTooltip, szTip, sizeof(szTip)/sizeof(szTip[0]));
1022                 if(SUCCEEDED(hr)) {
1023                     TRACE("callback(%s,%s,%s,%p)\n", debugstr_w(szPath), debugstr_w(szName), debugstr_w(szTip), lpData);
1024                     if(!callback(NULL, szPath, szName, szTip, NULL, lpData)) {
1025                         TRACE("callback ended enum\n");
1026                         break;
1027                     }
1028                 }
1029             }
1030         } while(FindNextFileW(hFind, &wfd));
1031         FindClose(hFind);
1032     }
1033     return S_OK;
1034 }
1035
1036
1037 /**********************************************************************
1038  *      EnumThemeColors                                    (UXTHEME.9)
1039  *
1040  * Enumerate theme colors available with a particular size
1041  *
1042  * PARAMS
1043  *     pszThemeFileName    Path to a msstyles theme file
1044  *     pszSizeName         Theme size to enumerate available colors
1045  *                         If NULL the default theme size is used
1046  *     dwColorNum          Color index to retrieve, increment from 0
1047  *     pszColorNames       Output color names
1048  *
1049  * RETURNS
1050  *     S_OK on success
1051  *     E_PROP_ID_UNSUPPORTED when dwColorName does not refer to a color
1052  *          or when pszSizeName does not refer to a valid size
1053  *
1054  * NOTES
1055  * XP fails with E_POINTER when pszColorNames points to a buffer smaller than
1056  * sizeof(THEMENAMES).
1057  *
1058  * Not very efficient that I'm opening & validating the theme every call, but
1059  * this is undocumented and almost never called..
1060  * (and this is how windows works too)
1061  */
1062 HRESULT WINAPI EnumThemeColors(LPWSTR pszThemeFileName, LPWSTR pszSizeName,
1063                                DWORD dwColorNum, PTHEMENAMES pszColorNames)
1064 {
1065     PTHEME_FILE pt;
1066     HRESULT hr;
1067     LPWSTR tmp;
1068     UINT resourceId = dwColorNum + 1000;
1069     TRACE("(%s,%s,%d)\n", debugstr_w(pszThemeFileName),
1070           debugstr_w(pszSizeName), dwColorNum);
1071
1072     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, pszSizeName, &pt);
1073     if(FAILED(hr)) return hr;
1074
1075     tmp = pt->pszAvailColors;
1076     while(dwColorNum && *tmp) {
1077         dwColorNum--;
1078         tmp += lstrlenW(tmp)+1;
1079     }
1080     if(!dwColorNum && *tmp) {
1081         TRACE("%s\n", debugstr_w(tmp));
1082         lstrcpyW(pszColorNames->szName, tmp);
1083         LoadStringW (pt->hTheme, resourceId,
1084             pszColorNames->szDisplayName,
1085             sizeof (pszColorNames->szDisplayName) / sizeof (WCHAR));
1086         LoadStringW (pt->hTheme, resourceId+1000,
1087             pszColorNames->szTooltip,
1088             sizeof (pszColorNames->szTooltip) / sizeof (WCHAR));
1089     }
1090     else
1091         hr = E_PROP_ID_UNSUPPORTED;
1092
1093     MSSTYLES_CloseThemeFile(pt);
1094     return hr;
1095 }
1096
1097 /**********************************************************************
1098  *      EnumThemeSizes                                     (UXTHEME.10)
1099  *
1100  * Enumerate theme colors available with a particular size
1101  *
1102  * PARAMS
1103  *     pszThemeFileName    Path to a msstyles theme file
1104  *     pszColorName        Theme color to enumerate available sizes
1105  *                         If NULL the default theme color is used
1106  *     dwSizeNum           Size index to retrieve, increment from 0
1107  *     pszSizeNames        Output size names
1108  *
1109  * RETURNS
1110  *     S_OK on success
1111  *     E_PROP_ID_UNSUPPORTED when dwSizeName does not refer to a size
1112  *          or when pszColorName does not refer to a valid color
1113  *
1114  * NOTES
1115  * XP fails with E_POINTER when pszSizeNames points to a buffer smaller than
1116  * sizeof(THEMENAMES).
1117  *
1118  * Not very efficient that I'm opening & validating the theme every call, but
1119  * this is undocumented and almost never called..
1120  * (and this is how windows works too)
1121  */
1122 HRESULT WINAPI EnumThemeSizes(LPWSTR pszThemeFileName, LPWSTR pszColorName,
1123                               DWORD dwSizeNum, PTHEMENAMES pszSizeNames)
1124 {
1125     PTHEME_FILE pt;
1126     HRESULT hr;
1127     LPWSTR tmp;
1128     UINT resourceId = dwSizeNum + 3000;
1129     TRACE("(%s,%s,%d)\n", debugstr_w(pszThemeFileName),
1130           debugstr_w(pszColorName), dwSizeNum);
1131
1132     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, pszColorName, NULL, &pt);
1133     if(FAILED(hr)) return hr;
1134
1135     tmp = pt->pszAvailSizes;
1136     while(dwSizeNum && *tmp) {
1137         dwSizeNum--;
1138         tmp += lstrlenW(tmp)+1;
1139     }
1140     if(!dwSizeNum && *tmp) {
1141         TRACE("%s\n", debugstr_w(tmp));
1142         lstrcpyW(pszSizeNames->szName, tmp);
1143         LoadStringW (pt->hTheme, resourceId,
1144             pszSizeNames->szDisplayName,
1145             sizeof (pszSizeNames->szDisplayName) / sizeof (WCHAR));
1146         LoadStringW (pt->hTheme, resourceId+1000,
1147             pszSizeNames->szTooltip,
1148             sizeof (pszSizeNames->szTooltip) / sizeof (WCHAR));
1149     }
1150     else
1151         hr = E_PROP_ID_UNSUPPORTED;
1152
1153     MSSTYLES_CloseThemeFile(pt);
1154     return hr;
1155 }
1156
1157 /**********************************************************************
1158  *      ParseThemeIniFile                                  (UXTHEME.11)
1159  *
1160  * Enumerate data in a theme INI file.
1161  *
1162  * PARAMS
1163  *     pszIniFileName      Path to a theme ini file
1164  *     pszUnknown          Cannot be NULL, L"" is valid
1165  *     callback            Called for each found entry
1166  *     lpData              Passed through to callback
1167  *
1168  * RETURNS
1169  *     S_OK on success
1170  *     0x800706488 (Unknown property) when enumeration is canceled from callback
1171  *
1172  * NOTES
1173  * When pszUnknown is NULL the callback is never called, the value does not seem to serve
1174  * any other purpose
1175  */
1176 HRESULT WINAPI ParseThemeIniFile(LPCWSTR pszIniFileName, LPWSTR pszUnknown,
1177                                  ParseThemeIniFileProc callback, LPVOID lpData)
1178 {
1179     FIXME("%s %s: stub\n", debugstr_w(pszIniFileName), debugstr_w(pszUnknown));
1180     return ERROR_CALL_NOT_IMPLEMENTED;
1181 }
1182
1183 /**********************************************************************
1184  *      CheckThemeSignature                                (UXTHEME.29)
1185  *
1186  * Validates the signature of a theme file
1187  *
1188  * PARAMS
1189  *     pszIniFileName      Path to a theme file
1190  *
1191  * RETURNS
1192  *     Success: S_OK
1193  *     Failure: HRESULT error-code
1194  */
1195 HRESULT WINAPI CheckThemeSignature(LPCWSTR pszThemeFileName)
1196 {
1197     PTHEME_FILE pt;
1198     HRESULT hr;
1199     TRACE("(%s)\n", debugstr_w(pszThemeFileName));
1200     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, NULL, &pt);
1201     if(FAILED(hr))
1202         return hr;
1203     MSSTYLES_CloseThemeFile(pt);
1204     return S_OK;
1205 }