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, UlongToPtr(value), SPIF_UPDATEINIFILE);
 397             }
 398
 399             bsp++;
 400         }
 401
 402         /* read backed-up non-client metrics */
 403         {
 404             NONCLIENTMETRICSW ncm;
 405             LOGFONTW iconTitleFont;
 406             DWORD count = sizeof(ncm);
 407             DWORD type;
 408
 409             if (RegQueryValueExW (hKey, keyNonClientMetrics, 0,
 410                 &type, (LPBYTE)&ncm, &count) == ERROR_SUCCESS)
 411             {
 412                 SystemParametersInfoW (SPI_SETNONCLIENTMETRICS,
 413                     count, &ncm, SPIF_UPDATEINIFILE);
 414             }
 415
 416             count = sizeof(iconTitleFont);
 417
 418             if (RegQueryValueExW (hKey, keyIconTitleFont, 0,
 419                 &type, (LPBYTE)&iconTitleFont, &count) == ERROR_SUCCESS)
 420             {
 421                 SystemParametersInfoW (SPI_SETICONTITLELOGFONT,
 422                     count, &iconTitleFont, SPIF_UPDATEINIFILE);
 423             }
 424         }
 425
 426         RegCloseKey (hKey);
 427     }
 428 }
 429
 430 /* Make system settings persistent, so they're in effect even w/o uxtheme
 431  * loaded.
 432  * For efficiency reasons, only the last SystemParametersInfoW sets
 433  * SPIF_SENDWININICHANGE */
 434 static void UXTHEME_SaveSystemMetrics(void)
 435 {
 436     const struct BackupSysParam* bsp = backupSysParams;
 437     NONCLIENTMETRICSW ncm;
 438     LOGFONTW iconTitleFont;
 439
 440     save_sys_colors (HKEY_CURRENT_USER);
 441
 442     while (bsp->spiGet >= 0)
 443     {
 444         DWORD value;
 445
 446         SystemParametersInfoW (bsp->spiGet, 0, &value, 0);
 447         SystemParametersInfoW (bsp->spiSet, 0, UlongToPtr(value), SPIF_UPDATEINIFILE);
 448         bsp++;
 449     }
 450
 451     memset (&ncm, 0, sizeof (ncm));
 452     ncm.cbSize = sizeof (ncm);
 453     SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, sizeof (ncm), &ncm, 0);
 454     SystemParametersInfoW (SPI_SETNONCLIENTMETRICS, sizeof (ncm), &ncm,
 455         SPIF_UPDATEINIFILE);
 456
 457     memset (&iconTitleFont, 0, sizeof (iconTitleFont));
 458     SystemParametersInfoW (SPI_GETICONTITLELOGFONT, sizeof (iconTitleFont),
 459         &iconTitleFont, 0);
 460     SystemParametersInfoW (SPI_SETICONTITLELOGFONT, sizeof (iconTitleFont),
 461         &iconTitleFont, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
 462 }
 463
 464 /***********************************************************************
 465  *      UXTHEME_SetActiveTheme
 466  *
 467  * Change the current active theme
 468  */
 469 static HRESULT UXTHEME_SetActiveTheme(PTHEME_FILE tf)
 470 {
 471     HKEY hKey;
 472     WCHAR tmp[2];
 473     HRESULT hr;
 474
 475     if(tf && !bThemeActive) UXTHEME_BackupSystemMetrics();
 476     hr = MSSTYLES_SetActiveTheme(tf, TRUE);
 477     if(FAILED(hr))
 478         return hr;
 479     if(tf) {
 480         bThemeActive = TRUE;
 481         lstrcpynW(szCurrentTheme, tf->szThemeFile, sizeof(szCurrentTheme)/sizeof(szCurrentTheme[0]));
 482         lstrcpynW(szCurrentColor, tf->pszSelectedColor, sizeof(szCurrentColor)/sizeof(szCurrentColor[0]));
 483         lstrcpynW(szCurrentSize, tf->pszSelectedSize, sizeof(szCurrentSize)/sizeof(szCurrentSize[0]));
 484     }
 485     else {
 486         UXTHEME_RestoreSystemMetrics();
 487         bThemeActive = FALSE;
 488         szCurrentTheme[0] = '\0';
 489         szCurrentColor[0] = '\0';
 490         szCurrentSize[0] = '\0';
 491     }
 492
 493     TRACE("Writing theme config to registry\n");
 494     if(!RegCreateKeyW(HKEY_CURRENT_USER, szThemeManager, &hKey)) {
 495         tmp[0] = bThemeActive?'1':'0';
 496         tmp[1] = '\0';
 497         RegSetValueExW(hKey, szThemeActive, 0, REG_SZ, (const BYTE*)tmp, sizeof(WCHAR)*2);
 498         if(bThemeActive) {
 499             RegSetValueExW(hKey, szColorName, 0, REG_SZ, (const BYTE*)szCurrentColor,
 500                 (lstrlenW(szCurrentColor)+1)*sizeof(WCHAR));
 501             RegSetValueExW(hKey, szSizeName, 0, REG_SZ, (const BYTE*)szCurrentSize,
 502                 (lstrlenW(szCurrentSize)+1)*sizeof(WCHAR));
 503             RegSetValueExW(hKey, szDllName, 0, REG_SZ, (const BYTE*)szCurrentTheme,
 504                 (lstrlenW(szCurrentTheme)+1)*sizeof(WCHAR));
 505         }
 506         else {
 507             RegDeleteValueW(hKey, szColorName);
 508             RegDeleteValueW(hKey, szSizeName);
 509             RegDeleteValueW(hKey, szDllName);
 510
 511         }
 512         RegCloseKey(hKey);
 513     }
 514     else
 515         TRACE("Failed to open theme registry key\n");
 516
 517     UXTHEME_SaveSystemMetrics ();
 518
 519     return hr;
 520 }
 521
 522 /***********************************************************************
 523  *      UXTHEME_InitSystem
 524  */
 525 void UXTHEME_InitSystem(HINSTANCE hInst)
 526 {
 527     static const WCHAR szWindowTheme[] = {
 528         'u','x','_','t','h','e','m','e','\0'
 529     };
 530     static const WCHAR szSubAppName[] = {
 531         'u','x','_','s','u','b','a','p','p','\0'
 532     };
 533     static const WCHAR szSubIdList[] = {
 534         'u','x','_','s','u','b','i','d','l','s','t','\0'
 535     };
 536     static const WCHAR szDialogThemeEnabled[] = {
 537         'u','x','_','d','i','a','l','o','g','t','h','e','m','e','\0'
 538     };
 539
 540     hDllInst = hInst;
 541
 542     atWindowTheme        = GlobalAddAtomW(szWindowTheme);
 543     atSubAppName         = GlobalAddAtomW(szSubAppName);
 544     atSubIdList          = GlobalAddAtomW(szSubIdList);
 545     atDialogThemeEnabled = GlobalAddAtomW(szDialogThemeEnabled);
 546
 547     UXTHEME_LoadTheme();
 548 }
 549
 550 /***********************************************************************
 551  *      IsAppThemed                                         (UXTHEME.@)
 552  */
 553 BOOL WINAPI IsAppThemed(void)
 554 {
 555     return IsThemeActive();
 556 }
 557
 558 /***********************************************************************
 559  *      IsThemeActive                                       (UXTHEME.@)
 560  */
 561 BOOL WINAPI IsThemeActive(void)
 562 {
 563     TRACE("\n");
 564     SetLastError(ERROR_SUCCESS);
 565     return bThemeActive;
 566 }
 567
 568 /***********************************************************************
 569  *      EnableTheming                                       (UXTHEME.@)
 570  *
 571  * NOTES
 572  * This is a global and persistent change
 573  */
 574 HRESULT WINAPI EnableTheming(BOOL fEnable)
 575 {
 576     HKEY hKey;
 577     WCHAR szEnabled[] = {'0','\0'};
 578
 579     TRACE("(%d)\n", fEnable);
 580
 581     if(fEnable != bThemeActive) {
 582         if(fEnable)
 583             UXTHEME_BackupSystemMetrics();
 584         else
 585             UXTHEME_RestoreSystemMetrics();
 586         UXTHEME_SaveSystemMetrics ();
 587         bThemeActive = fEnable;
 588         if(bThemeActive) szEnabled[0] = '1';
 589         if(!RegOpenKeyW(HKEY_CURRENT_USER, szThemeManager, &hKey)) {
 590             RegSetValueExW(hKey, szThemeActive, 0, REG_SZ, (LPBYTE)szEnabled, sizeof(WCHAR));
 591             RegCloseKey(hKey);
 592         }
 593         UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
 594     }
 595     return S_OK;
 596 }
 597
 598 /***********************************************************************
 599  *      UXTHEME_SetWindowProperty
 600  *
 601  * I'm using atoms as there may be large numbers of duplicated strings
 602  * and they do the work of keeping memory down as a cause of that quite nicely
 603  */
 604 static HRESULT UXTHEME_SetWindowProperty(HWND hwnd, ATOM aProp, LPCWSTR pszValue)
 605 {
 606     ATOM oldValue = (ATOM)(size_t)RemovePropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp));
 607     if(oldValue)
 608         DeleteAtom(oldValue);
 609     if(pszValue) {
 610         ATOM atValue = AddAtomW(pszValue);
 611         if(!atValue
 612            || !SetPropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp), (LPWSTR)MAKEINTATOM(atValue))) {
 613             HRESULT hr = HRESULT_FROM_WIN32(GetLastError());
 614             if(atValue) DeleteAtom(atValue);
 615             return hr;
 616         }
 617     }
 618     return S_OK;
 619 }
 620
 621 static LPWSTR UXTHEME_GetWindowProperty(HWND hwnd, ATOM aProp, LPWSTR pszBuffer, int dwLen)
 622 {
 623     ATOM atValue = (ATOM)(size_t)GetPropW(hwnd, (LPCWSTR)MAKEINTATOM(aProp));
 624     if(atValue) {
 625         if(GetAtomNameW(atValue, pszBuffer, dwLen))
 626             return pszBuffer;
 627         TRACE("property defined, but unable to get value\n");
 628     }
 629     return NULL;
 630 }
 631
 632 /***********************************************************************
 633  *      OpenThemeData                                       (UXTHEME.@)
 634  */
 635 HTHEME WINAPI OpenThemeData(HWND hwnd, LPCWSTR pszClassList)
 636 {
 637     WCHAR szAppBuff[256];
 638     WCHAR szClassBuff[256];
 639     LPCWSTR pszAppName;
 640     LPCWSTR pszUseClassList;
 641     HTHEME hTheme = NULL;
 642     TRACE("(%p,%s)\n", hwnd, debugstr_w(pszClassList));
 643
 644     if(bThemeActive)
 645     {
 646         pszAppName = UXTHEME_GetWindowProperty(hwnd, atSubAppName, szAppBuff, sizeof(szAppBuff)/sizeof(szAppBuff[0]));
 647         /* If SetWindowTheme was used on the window, that overrides the class list passed to this function */
 648         pszUseClassList = UXTHEME_GetWindowProperty(hwnd, atSubIdList, szClassBuff, sizeof(szClassBuff)/sizeof(szClassBuff[0]));
 649         if(!pszUseClassList)
 650             pszUseClassList = pszClassList;
 651
 652         if (pszUseClassList)
 653             hTheme = MSSTYLES_OpenThemeClass(pszAppName, pszUseClassList);
 654     }
 655     if(IsWindow(hwnd))
 656         SetPropW(hwnd, (LPCWSTR)MAKEINTATOM(atWindowTheme), hTheme);
 657     TRACE(" = %p\n", hTheme);
 658     return hTheme;
 659 }
 660
 661 /***********************************************************************
 662  *      GetWindowTheme                                      (UXTHEME.@)
 663  *
 664  * Retrieve the last theme opened for a window.
 665  *
 666  * PARAMS
 667  *  hwnd  [I] window to retrieve the theme for
 668  *
 669  * RETURNS
 670  *  The most recent theme.
 671  */
 672 HTHEME WINAPI GetWindowTheme(HWND hwnd)
 673 {
 674     TRACE("(%p)\n", hwnd);
 675     return GetPropW(hwnd, (LPCWSTR)MAKEINTATOM(atWindowTheme));
 676 }
 677
 678 /***********************************************************************
 679  *      SetWindowTheme                                      (UXTHEME.@)
 680  *
 681  * Persistent through the life of the window, even after themes change
 682  */
 683 HRESULT WINAPI SetWindowTheme(HWND hwnd, LPCWSTR pszSubAppName,
 684                               LPCWSTR pszSubIdList)
 685 {
 686     HRESULT hr;
 687     TRACE("(%p,%s,%s)\n", hwnd, debugstr_w(pszSubAppName),
 688           debugstr_w(pszSubIdList));
 689     hr = UXTHEME_SetWindowProperty(hwnd, atSubAppName, pszSubAppName);
 690     if(SUCCEEDED(hr))
 691         hr = UXTHEME_SetWindowProperty(hwnd, atSubIdList, pszSubIdList);
 692     if(SUCCEEDED(hr))
 693         UXTHEME_broadcast_msg (hwnd, WM_THEMECHANGED);
 694     return hr;
 695 }
 696
 697 /***********************************************************************
 698  *      GetCurrentThemeName                                 (UXTHEME.@)
 699  */
 700 HRESULT WINAPI GetCurrentThemeName(LPWSTR pszThemeFileName, int dwMaxNameChars,
 701                                    LPWSTR pszColorBuff, int cchMaxColorChars,
 702                                    LPWSTR pszSizeBuff, int cchMaxSizeChars)
 703 {
 704     if(!bThemeActive)
 705         return E_PROP_ID_UNSUPPORTED;
 706     if(pszThemeFileName) lstrcpynW(pszThemeFileName, szCurrentTheme, dwMaxNameChars);
 707     if(pszColorBuff) lstrcpynW(pszColorBuff, szCurrentColor, cchMaxColorChars);
 708     if(pszSizeBuff) lstrcpynW(pszSizeBuff, szCurrentSize, cchMaxSizeChars);
 709     return S_OK;
 710 }
 711
 712 /***********************************************************************
 713  *      GetThemeAppProperties                               (UXTHEME.@)
 714  */
 715 DWORD WINAPI GetThemeAppProperties(void)
 716 {
 717     return dwThemeAppProperties;
 718 }
 719
 720 /***********************************************************************
 721  *      SetThemeAppProperties                               (UXTHEME.@)
 722  */
 723 void WINAPI SetThemeAppProperties(DWORD dwFlags)
 724 {
 725     TRACE("(0x%08x)\n", dwFlags);
 726     dwThemeAppProperties = dwFlags;
 727 }
 728
 729 /***********************************************************************
 730  *      CloseThemeData                                      (UXTHEME.@)
 731  */
 732 HRESULT WINAPI CloseThemeData(HTHEME hTheme)
 733 {
 734     TRACE("(%p)\n", hTheme);
 735     if(!hTheme)
 736         return E_HANDLE;
 737     return MSSTYLES_CloseThemeClass(hTheme);
 738 }
 739
 740 /***********************************************************************
 741  *      HitTestThemeBackground                              (UXTHEME.@)
 742  */
 743 HRESULT WINAPI HitTestThemeBackground(HTHEME hTheme, HDC hdc, int iPartId,
 744                                      int iStateId, DWORD dwOptions,
 745                                      const RECT *pRect, HRGN hrgn,
 746                                      POINT ptTest, WORD *pwHitTestCode)
 747 {
 748     FIXME("%d %d 0x%08x: stub\n", iPartId, iStateId, dwOptions);
 749     if(!hTheme)
 750         return E_HANDLE;
 751     return ERROR_CALL_NOT_IMPLEMENTED;
 752 }
 753
 754 /***********************************************************************
 755  *      IsThemePartDefined                                  (UXTHEME.@)
 756  */
 757 BOOL WINAPI IsThemePartDefined(HTHEME hTheme, int iPartId, int iStateId)
 758 {
 759     TRACE("(%p,%d,%d)\n", hTheme, iPartId, iStateId);
 760     if(!hTheme) {
 761         SetLastError(E_HANDLE);
 762         return FALSE;
 763     }
 764     if(MSSTYLES_FindPartState(hTheme, iPartId, iStateId, NULL))
 765         return TRUE;
 766     return FALSE;
 767 }
 768
 769 /***********************************************************************
 770  *      GetThemeDocumentationProperty                       (UXTHEME.@)
 771  *
 772  * Try and retrieve the documentation property from string resources
 773  * if that fails, get it from the [documentation] section of themes.ini
 774  */
 775 HRESULT WINAPI GetThemeDocumentationProperty(LPCWSTR pszThemeName,
 776                                              LPCWSTR pszPropertyName,
 777                                              LPWSTR pszValueBuff,
 778                                              int cchMaxValChars)
 779 {
 780     const WORD wDocToRes[] = {
 781         TMT_DISPLAYNAME,5000,
 782         TMT_TOOLTIP,5001,
 783         TMT_COMPANY,5002,
 784         TMT_AUTHOR,5003,
 785         TMT_COPYRIGHT,5004,
 786         TMT_URL,5005,
 787         TMT_VERSION,5006,
 788         TMT_DESCRIPTION,5007
 789     };
 790
 791     PTHEME_FILE pt;
 792     HRESULT hr;
 793     unsigned int i;
 794     int iDocId;
 795     TRACE("(%s,%s,%p,%d)\n", debugstr_w(pszThemeName), debugstr_w(pszPropertyName),
 796           pszValueBuff, cchMaxValChars);
 797
 798     hr = MSSTYLES_OpenThemeFile(pszThemeName, NULL, NULL, &pt);
 799     if(FAILED(hr)) return hr;
 800
 801     /* Try to load from string resources */
 802     hr = E_PROP_ID_UNSUPPORTED;
 803     if(MSSTYLES_LookupProperty(pszPropertyName, NULL, &iDocId)) {
 804         for(i=0; i<sizeof(wDocToRes)/sizeof(wDocToRes[0]); i+=2) {
 805             if(wDocToRes[i] == iDocId) {
 806                 if(LoadStringW(pt->hTheme, wDocToRes[i+1], pszValueBuff, cchMaxValChars)) {
 807                     hr = S_OK;
 808                     break;
 809                 }
 810             }
 811         }
 812     }
 813     /* If loading from string resource failed, try getting it from the theme.ini */
 814     if(FAILED(hr)) {
 815         PUXINI_FILE uf = MSSTYLES_GetThemeIni(pt);
 816         if(UXINI_FindSection(uf, szIniDocumentation)) {
 817             LPCWSTR lpValue;
 818             DWORD dwLen;
 819             if(UXINI_FindValue(uf, pszPropertyName, &lpValue, &dwLen)) {
 820                 lstrcpynW(pszValueBuff, lpValue, min(dwLen+1,cchMaxValChars));
 821                 hr = S_OK;
 822             }
 823         }
 824         UXINI_CloseINI(uf);
 825     }
 826
 827     MSSTYLES_CloseThemeFile(pt);
 828     return hr;
 829 }
 830
 831 /**********************************************************************
 832  *      Undocumented functions
 833  */
 834
 835 /**********************************************************************
 836  *      QueryThemeServices                                 (UXTHEME.1)
 837  *
 838  * RETURNS
 839  *     some kind of status flag
 840  */
 841 DWORD WINAPI QueryThemeServices(void)
 842 {
 843     FIXME("stub\n");
 844     return 3; /* This is what is returned under XP in most cases */
 845 }
 846
 847
 848 /**********************************************************************
 849  *      OpenThemeFile                                      (UXTHEME.2)
 850  *
 851  * Opens a theme file, which can be used to change the current theme, etc
 852  *
 853  * PARAMS
 854  *     pszThemeFileName    Path to a msstyles theme file
 855  *     pszColorName        Color defined in the theme, eg. NormalColor
 856  *     pszSizeName         Size defined in the theme, eg. NormalSize
 857  *     hThemeFile          Handle to theme file
 858  *
 859  * RETURNS
 860  *     Success: S_OK
 861  *     Failure: HRESULT error-code
 862  */
 863 HRESULT WINAPI OpenThemeFile(LPCWSTR pszThemeFileName, LPCWSTR pszColorName,
 864                              LPCWSTR pszSizeName, HTHEMEFILE *hThemeFile,
 865                              DWORD unknown)
 866 {
 867     TRACE("(%s,%s,%s,%p,%d)\n", debugstr_w(pszThemeFileName),
 868           debugstr_w(pszColorName), debugstr_w(pszSizeName),
 869           hThemeFile, unknown);
 870     return MSSTYLES_OpenThemeFile(pszThemeFileName, pszColorName, pszSizeName, (PTHEME_FILE*)hThemeFile);
 871 }
 872
 873 /**********************************************************************
 874  *      CloseThemeFile                                     (UXTHEME.3)
 875  *
 876  * Releases theme file handle returned by OpenThemeFile
 877  *
 878  * PARAMS
 879  *     hThemeFile           Handle to theme file
 880  *
 881  * RETURNS
 882  *     Success: S_OK
 883  *     Failure: HRESULT error-code
 884  */
 885 HRESULT WINAPI CloseThemeFile(HTHEMEFILE hThemeFile)
 886 {
 887     TRACE("(%p)\n", hThemeFile);
 888     MSSTYLES_CloseThemeFile(hThemeFile);
 889     return S_OK;
 890 }
 891
 892 /**********************************************************************
 893  *      ApplyTheme                                         (UXTHEME.4)
 894  *
 895  * Set a theme file to be the currently active theme
 896  *
 897  * PARAMS
 898  *     hThemeFile           Handle to theme file
 899  *     unknown              See notes
 900  *     hWnd                 Window requesting the theme change
 901  *
 902  * RETURNS
 903  *     Success: S_OK
 904  *     Failure: HRESULT error-code
 905  *
 906  * NOTES
 907  * I'm not sure what the second parameter is (the datatype is likely wrong), other then this:
 908  * Under XP if I pass
 909  * char b[] = "";
 910  *   the theme is applied with the screen redrawing really badly (flickers)
 911  * char b[] = "\0"; where \0 can be one or more of any character, makes no difference
 912  *   the theme is applied smoothly (screen does not flicker)
 913  * char *b = "\0" or NULL; where \0 can be zero or more of any character, makes no difference
 914  *   the function fails returning invalid parameter... very strange
 915  */
 916 HRESULT WINAPI ApplyTheme(HTHEMEFILE hThemeFile, char *unknown, HWND hWnd)
 917 {
 918     HRESULT hr;
 919     TRACE("(%p,%s,%p)\n", hThemeFile, unknown, hWnd);
 920     hr = UXTHEME_SetActiveTheme(hThemeFile);
 921     UXTHEME_broadcast_msg (NULL, WM_THEMECHANGED);
 922     return hr;
 923 }
 924
 925 /**********************************************************************
 926  *      GetThemeDefaults                                   (UXTHEME.7)
 927  *
 928  * Get the default color & size for a theme
 929  *
 930  * PARAMS
 931  *     pszThemeFileName    Path to a msstyles theme file
 932  *     pszColorName        Buffer to receive the default color name
 933  *     dwColorNameLen      Length, in characters, of color name buffer
 934  *     pszSizeName         Buffer to receive the default size name
 935  *     dwSizeNameLen       Length, in characters, of size name buffer
 936  *
 937  * RETURNS
 938  *     Success: S_OK
 939  *     Failure: HRESULT error-code
 940  */
 941 HRESULT WINAPI GetThemeDefaults(LPCWSTR pszThemeFileName, LPWSTR pszColorName,
 942                                 DWORD dwColorNameLen, LPWSTR pszSizeName,
 943                                 DWORD dwSizeNameLen)
 944 {
 945     PTHEME_FILE pt;
 946     HRESULT hr;
 947     TRACE("(%s,%p,%d,%p,%d)\n", debugstr_w(pszThemeFileName),
 948           pszColorName, dwColorNameLen,
 949           pszSizeName, dwSizeNameLen);
 950
 951     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, NULL, &pt);
 952     if(FAILED(hr)) return hr;
 953
 954     lstrcpynW(pszColorName, pt->pszSelectedColor, dwColorNameLen);
 955     lstrcpynW(pszSizeName, pt->pszSelectedSize, dwSizeNameLen);
 956
 957     MSSTYLES_CloseThemeFile(pt);
 958     return S_OK;
 959 }
 960
 961 /**********************************************************************
 962  *      EnumThemes                                         (UXTHEME.8)
 963  *
 964  * Enumerate available themes, calls specified EnumThemeProc for each
 965  * theme found. Passes lpData through to callback function.
 966  *
 967  * PARAMS
 968  *     pszThemePath        Path containing themes
 969  *     callback            Called for each theme found in path
 970  *     lpData              Passed through to callback
 971  *
 972  * RETURNS
 973  *     Success: S_OK
 974  *     Failure: HRESULT error-code
 975  */
 976 HRESULT WINAPI EnumThemes(LPCWSTR pszThemePath, EnumThemeProc callback,
 977                           LPVOID lpData)
 978 {
 979     WCHAR szDir[MAX_PATH];
 980     WCHAR szPath[MAX_PATH];
 981     static const WCHAR szStar[] = {'*','.','*','\0'};
 982     static const WCHAR szFormat[] = {'%','s','%','s','\\','%','s','.','m','s','s','t','y','l','e','s','\0'};
 983     static const WCHAR szDisplayName[] = {'d','i','s','p','l','a','y','n','a','m','e','\0'};
 984     static const WCHAR szTooltip[] = {'t','o','o','l','t','i','p','\0'};
 985     WCHAR szName[60];
 986     WCHAR szTip[60];
 987     HANDLE hFind;
 988     WIN32_FIND_DATAW wfd;
 989     HRESULT hr;
 990     size_t pathLen;
 991
 992     TRACE("(%s,%p,%p)\n", debugstr_w(pszThemePath), callback, lpData);
 993
 994     if(!pszThemePath || !callback)
 995         return E_POINTER;
 996
 997     lstrcpyW(szDir, pszThemePath);
 998     pathLen = lstrlenW (szDir);
 999     if ((pathLen > 0) && (pathLen < MAX_PATH-1) && (szDir[pathLen - 1] != '\\'))
1000     {
1001         szDir[pathLen] = '\\';
1002         szDir[pathLen+1] = 0;
1003     }
1004
1005     lstrcpyW(szPath, szDir);
1006     lstrcatW(szPath, szStar);
1007     TRACE("searching %s\n", debugstr_w(szPath));
1008
1009     hFind = FindFirstFileW(szPath, &wfd);
1010     if(hFind != INVALID_HANDLE_VALUE) {
1011         do {
1012             if(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY
1013                && !(wfd.cFileName[0] == '.' && ((wfd.cFileName[1] == '.' && wfd.cFileName[2] == 0) || wfd.cFileName[1] == 0))) {
1014                 wsprintfW(szPath, szFormat, szDir, wfd.cFileName, wfd.cFileName);
1015
1016                 hr = GetThemeDocumentationProperty(szPath, szDisplayName, szName, sizeof(szName)/sizeof(szName[0]));
1017                 if(SUCCEEDED(hr))
1018                     hr = GetThemeDocumentationProperty(szPath, szTooltip, szTip, sizeof(szTip)/sizeof(szTip[0]));
1019                 if(SUCCEEDED(hr)) {
1020                     TRACE("callback(%s,%s,%s,%p)\n", debugstr_w(szPath), debugstr_w(szName), debugstr_w(szTip), lpData);
1021                     if(!callback(NULL, szPath, szName, szTip, NULL, lpData)) {
1022                         TRACE("callback ended enum\n");
1023                         break;
1024                     }
1025                 }
1026             }
1027         } while(FindNextFileW(hFind, &wfd));
1028         FindClose(hFind);
1029     }
1030     return S_OK;
1031 }
1032
1033
1034 /**********************************************************************
1035  *      EnumThemeColors                                    (UXTHEME.9)
1036  *
1037  * Enumerate theme colors available with a particular size
1038  *
1039  * PARAMS
1040  *     pszThemeFileName    Path to a msstyles theme file
1041  *     pszSizeName         Theme size to enumerate available colors
1042  *                         If NULL the default theme size is used
1043  *     dwColorNum          Color index to retrieve, increment from 0
1044  *     pszColorNames       Output color names
1045  *
1046  * RETURNS
1047  *     S_OK on success
1048  *     E_PROP_ID_UNSUPPORTED when dwColorName does not refer to a color
1049  *          or when pszSizeName does not refer to a valid size
1050  *
1051  * NOTES
1052  * XP fails with E_POINTER when pszColorNames points to a buffer smaller than
1053  * sizeof(THEMENAMES).
1054  *
1055  * Not very efficient that I'm opening & validating the theme every call, but
1056  * this is undocumented and almost never called..
1057  * (and this is how windows works too)
1058  */
1059 HRESULT WINAPI EnumThemeColors(LPWSTR pszThemeFileName, LPWSTR pszSizeName,
1060                                DWORD dwColorNum, PTHEMENAMES pszColorNames)
1061 {
1062     PTHEME_FILE pt;
1063     HRESULT hr;
1064     LPWSTR tmp;
1065     UINT resourceId = dwColorNum + 1000;
1066     TRACE("(%s,%s,%d)\n", debugstr_w(pszThemeFileName),
1067           debugstr_w(pszSizeName), dwColorNum);
1068
1069     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, pszSizeName, &pt);
1070     if(FAILED(hr)) return hr;
1071
1072     tmp = pt->pszAvailColors;
1073     while(dwColorNum && *tmp) {
1074         dwColorNum--;
1075         tmp += lstrlenW(tmp)+1;
1076     }
1077     if(!dwColorNum && *tmp) {
1078         TRACE("%s\n", debugstr_w(tmp));
1079         lstrcpyW(pszColorNames->szName, tmp);
1080         LoadStringW (pt->hTheme, resourceId,
1081             pszColorNames->szDisplayName,
1082             sizeof (pszColorNames->szDisplayName) / sizeof (WCHAR));
1083         LoadStringW (pt->hTheme, resourceId+1000,
1084             pszColorNames->szTooltip,
1085             sizeof (pszColorNames->szTooltip) / sizeof (WCHAR));
1086     }
1087     else
1088         hr = E_PROP_ID_UNSUPPORTED;
1089
1090     MSSTYLES_CloseThemeFile(pt);
1091     return hr;
1092 }
1093
1094 /**********************************************************************
1095  *      EnumThemeSizes                                     (UXTHEME.10)
1096  *
1097  * Enumerate theme colors available with a particular size
1098  *
1099  * PARAMS
1100  *     pszThemeFileName    Path to a msstyles theme file
1101  *     pszColorName        Theme color to enumerate available sizes
1102  *                         If NULL the default theme color is used
1103  *     dwSizeNum           Size index to retrieve, increment from 0
1104  *     pszSizeNames        Output size names
1105  *
1106  * RETURNS
1107  *     S_OK on success
1108  *     E_PROP_ID_UNSUPPORTED when dwSizeName does not refer to a size
1109  *          or when pszColorName does not refer to a valid color
1110  *
1111  * NOTES
1112  * XP fails with E_POINTER when pszSizeNames points to a buffer smaller than
1113  * sizeof(THEMENAMES).
1114  *
1115  * Not very efficient that I'm opening & validating the theme every call, but
1116  * this is undocumented and almost never called..
1117  * (and this is how windows works too)
1118  */
1119 HRESULT WINAPI EnumThemeSizes(LPWSTR pszThemeFileName, LPWSTR pszColorName,
1120                               DWORD dwSizeNum, PTHEMENAMES pszSizeNames)
1121 {
1122     PTHEME_FILE pt;
1123     HRESULT hr;
1124     LPWSTR tmp;
1125     UINT resourceId = dwSizeNum + 3000;
1126     TRACE("(%s,%s,%d)\n", debugstr_w(pszThemeFileName),
1127           debugstr_w(pszColorName), dwSizeNum);
1128
1129     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, pszColorName, NULL, &pt);
1130     if(FAILED(hr)) return hr;
1131
1132     tmp = pt->pszAvailSizes;
1133     while(dwSizeNum && *tmp) {
1134         dwSizeNum--;
1135         tmp += lstrlenW(tmp)+1;
1136     }
1137     if(!dwSizeNum && *tmp) {
1138         TRACE("%s\n", debugstr_w(tmp));
1139         lstrcpyW(pszSizeNames->szName, tmp);
1140         LoadStringW (pt->hTheme, resourceId,
1141             pszSizeNames->szDisplayName,
1142             sizeof (pszSizeNames->szDisplayName) / sizeof (WCHAR));
1143         LoadStringW (pt->hTheme, resourceId+1000,
1144             pszSizeNames->szTooltip,
1145             sizeof (pszSizeNames->szTooltip) / sizeof (WCHAR));
1146     }
1147     else
1148         hr = E_PROP_ID_UNSUPPORTED;
1149
1150     MSSTYLES_CloseThemeFile(pt);
1151     return hr;
1152 }
1153
1154 /**********************************************************************
1155  *      ParseThemeIniFile                                  (UXTHEME.11)
1156  *
1157  * Enumerate data in a theme INI file.
1158  *
1159  * PARAMS
1160  *     pszIniFileName      Path to a theme ini file
1161  *     pszUnknown          Cannot be NULL, L"" is valid
1162  *     callback            Called for each found entry
1163  *     lpData              Passed through to callback
1164  *
1165  * RETURNS
1166  *     S_OK on success
1167  *     0x800706488 (Unknown property) when enumeration is canceled from callback
1168  *
1169  * NOTES
1170  * When pszUnknown is NULL the callback is never called, the value does not seem to serve
1171  * any other purpose
1172  */
1173 HRESULT WINAPI ParseThemeIniFile(LPCWSTR pszIniFileName, LPWSTR pszUnknown,
1174                                  ParseThemeIniFileProc callback, LPVOID lpData)
1175 {
1176     FIXME("%s %s: stub\n", debugstr_w(pszIniFileName), debugstr_w(pszUnknown));
1177     return ERROR_CALL_NOT_IMPLEMENTED;
1178 }
1179
1180 /**********************************************************************
1181  *      CheckThemeSignature                                (UXTHEME.29)
1182  *
1183  * Validates the signature of a theme file
1184  *
1185  * PARAMS
1186  *     pszIniFileName      Path to a theme file
1187  *
1188  * RETURNS
1189  *     Success: S_OK
1190  *     Failure: HRESULT error-code
1191  */
1192 HRESULT WINAPI CheckThemeSignature(LPCWSTR pszThemeFileName)
1193 {
1194     PTHEME_FILE pt;
1195     HRESULT hr;
1196     TRACE("(%s)\n", debugstr_w(pszThemeFileName));
1197     hr = MSSTYLES_OpenThemeFile(pszThemeFileName, NULL, NULL, &pt);
1198     if(FAILED(hr))
1199         return hr;
1200     MSSTYLES_CloseThemeFile(pt);
1201     return S_OK;
1202 }