reactos/dll/cpl/desk/preview.c

   1 /*
   2  * PROJECT:     ReactOS Desktop Control Panel
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        lib/cpl/desk/preview.c
   5  * PURPOSE:     Draws the preview control
   6  * COPYRIGHT:   Copyright 2006, 2007 Eric Kohl (email?)
   7  */
   8
   9 #include "desk.h"
  10 #include "preview.h"
  11
  12 static const TCHAR szPreviewWndClass[] = TEXT("PreviewWndClass");
  13
  14 typedef struct _PREVIEW_DATA
  15 {
  16     HWND hwndParent;
  17
  18     DWORD clrDesktop;
  19     HBRUSH hbrDesktop;
  20
  21     DWORD clrWindow;
  22     HBRUSH hbrWindow;
  23
  24     DWORD clrScrollbar;
  25     HBRUSH hbrScrollbar;
  26
  27     DWORD clrActiveCaptionText;
  28     DWORD clrInactiveCaptionText;
  29     DWORD clrWindowText;
  30     DWORD clrButtonText;
  31
  32     INT cxEdge;
  33     INT cyEdge;
  34
  35     INT cySizeFrame;
  36
  37     INT cyCaption;
  38     INT cyMenu;
  39     INT cxScrollbar;
  40
  41     RECT rcDesktop;
  42     RECT rcInactiveFrame;
  43     RECT rcInactiveCaption;
  44     RECT rcInactiveCaptionButtons;
  45
  46     RECT rcActiveFrame;
  47     RECT rcActiveCaption;
  48     RECT rcActiveCaptionButtons;
  49     RECT rcActiveMenuBar;
  50     RECT rcSelectedMenuItem;
  51     RECT rcActiveClient;
  52     RECT rcActiveScroll;
  53
  54     RECT rcDialogFrame;
  55     RECT rcDialogCaption;
  56     RECT rcDialogCaptionButtons;
  57     RECT rcDialogClient;
  58
  59     RECT rcDialogButton;
  60
  61     LPTSTR lpInAct;
  62     LPTSTR lpAct;
  63     LPTSTR lpWinTxt;
  64     LPTSTR lpMessBox;
  65     LPTSTR lpMessText;
  66     LPTSTR lpButText;
  67
  68     LOGFONT lfCaptionFont;
  69     LOGFONT lfMenuFont;
  70     LOGFONT lfMessageFont;
  71
  72     HFONT hCaptionFont;
  73     HFONT hMenuFont;
  74     HFONT hMessageFont;
  75
  76     HMENU hMenu;
  77
  78 } PREVIEW_DATA, *PPREVIEW_DATA;
  79
  80
  81
  82 static VOID
  83 DrawCaptionButtons(HDC hdc, LPRECT lpRect, BOOL bMinMax, int x)
  84 {
  85     RECT rc3;
  86     RECT rc4;
  87     RECT rc5;
  88
  89     rc3.left = lpRect->right - 2 - x;
  90     rc3.top = lpRect->top + 2;
  91     rc3.right = lpRect->right - 2;
  92     rc3.bottom = lpRect->bottom - 2;
  93
  94     DrawFrameControl(hdc, &rc3, DFC_CAPTION, DFCS_CAPTIONCLOSE);
  95
  96     if (bMinMax)
  97     {
  98         rc4.left = rc3.left - x - 2;
  99         rc4.top = rc3.top;
 100         rc4.right = rc3.right - x - 2;
 101         rc4.bottom = rc3.bottom;
 102
 103         DrawFrameControl(hdc, &rc4, DFC_CAPTION, DFCS_CAPTIONMAX);
 104
 105         rc5.left = rc4.left - x;
 106         rc5.top = rc4.top;
 107         rc5.right = rc4.right - x;
 108         rc5.bottom = rc4.bottom;
 109
 110         DrawFrameControl(hdc, &rc5, DFC_CAPTION, DFCS_CAPTIONMIN);
 111     }
 112 }
 113
 114
 115 static VOID
 116 DrawScrollbar(HDC hdc, LPRECT rc, HBRUSH hbrScrollbar)
 117 {
 118     RECT rcTop;
 119     RECT rcBottom;
 120     RECT rcMiddle;
 121     int width;
 122
 123     width = rc->right - rc->left;
 124
 125     rcTop.left = rc->left;
 126     rcTop.right = rc->right;
 127     rcTop.top = rc->top;
 128     rcTop.bottom = rc->top + width;
 129
 130     rcMiddle.left = rc->left;
 131     rcMiddle.right = rc->right;
 132     rcMiddle.top = rc->top + width;
 133     rcMiddle.bottom = rc->bottom - width;
 134
 135     rcBottom.left = rc->left;
 136     rcBottom.right = rc->right;
 137     rcBottom.top = rc->bottom - width;
 138     rcBottom.bottom = rc->bottom;
 139
 140     DrawFrameControl(hdc, &rcTop, DFC_SCROLL, DFCS_SCROLLUP);
 141     DrawFrameControl(hdc, &rcBottom, DFC_SCROLL, DFCS_SCROLLDOWN);
 142
 143     FillRect(hdc, &rcMiddle, hbrScrollbar);
 144 }
 145
 146
 147 static VOID
 148 OnCreate(HWND hwnd, PPREVIEW_DATA pPreviewData)
 149 {
 150     NONCLIENTMETRICS NonClientMetrics;
 151
 152     pPreviewData->clrScrollbar = GetSysColor(COLOR_SCROLLBAR);
 153     pPreviewData->hbrScrollbar = CreateSolidBrush(pPreviewData->clrScrollbar);
 154
 155     pPreviewData->clrDesktop = GetSysColor(COLOR_DESKTOP);
 156     pPreviewData->hbrDesktop = CreateSolidBrush(pPreviewData->clrDesktop);
 157     pPreviewData->clrWindow = GetSysColor(COLOR_WINDOW);
 158     pPreviewData->hbrWindow = CreateSolidBrush(pPreviewData->clrWindow);
 159
 160     pPreviewData->clrActiveCaptionText = GetSysColor(COLOR_CAPTIONTEXT);
 161     pPreviewData->clrInactiveCaptionText = GetSysColor(COLOR_INACTIVECAPTIONTEXT);
 162     pPreviewData->clrWindowText = GetSysColor(COLOR_WINDOWTEXT);
 163     pPreviewData->clrButtonText = GetSysColor(COLOR_BTNTEXT);
 164
 165     pPreviewData->cxEdge = GetSystemMetrics(SM_CXEDGE);
 166     pPreviewData->cyEdge = GetSystemMetrics(SM_CXEDGE);
 167
 168     pPreviewData->cySizeFrame = GetSystemMetrics(SM_CYSIZEFRAME);
 169
 170     pPreviewData->cyCaption = GetSystemMetrics(SM_CYCAPTION);
 171     pPreviewData->cyMenu = GetSystemMetrics(SM_CYMENU);
 172     pPreviewData->cxScrollbar = GetSystemMetrics(SM_CXVSCROLL);
 173
 174     /* load font info */
 175     NonClientMetrics.cbSize = sizeof(NONCLIENTMETRICS);
 176     SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &NonClientMetrics, 0);
 177
 178     pPreviewData->lfCaptionFont = NonClientMetrics.lfCaptionFont;
 179     pPreviewData->hCaptionFont = CreateFontIndirect(&pPreviewData->lfCaptionFont);
 180
 181     pPreviewData->lfMenuFont = NonClientMetrics.lfMenuFont;
 182     pPreviewData->hMenuFont = CreateFontIndirect(&pPreviewData->lfMenuFont);
 183
 184     pPreviewData->lfMessageFont = NonClientMetrics.lfMessageFont;
 185     pPreviewData->hMessageFont = CreateFontIndirect(&pPreviewData->lfMessageFont);
 186
 187     /* Load and modify the menu */
 188     pPreviewData->hMenu = LoadMenu(hApplet, MAKEINTRESOURCE(IDR_PREVIEW_MENU));
 189     EnableMenuItem(pPreviewData->hMenu, ID_MENU_DISABLED,
 190                    MF_BYCOMMAND | MF_DISABLED);
 191     HiliteMenuItem(hwnd, pPreviewData->hMenu,
 192                    ID_MENU_SELECTED, MF_BYCOMMAND | MF_HILITE);
 193
 194 //    GetMenuItemRect(hwnd, pPreviewData->hMenu,
 195 //                    ID_MENU_SELECTED, &pPreviewData->rcSelectedMenuItem);
 196
 197
 198     AllocAndLoadString(&pPreviewData->lpInAct, hApplet, IDS_INACTWIN);
 199     AllocAndLoadString(&pPreviewData->lpAct, hApplet, IDS_ACTWIN);
 200     AllocAndLoadString(&pPreviewData->lpWinTxt, hApplet, IDS_WINTEXT);
 201     AllocAndLoadString(&pPreviewData->lpMessBox, hApplet, IDS_MESSBOX);
 202     AllocAndLoadString(&pPreviewData->lpMessText, hApplet, IDS_MESSTEXT);
 203     AllocAndLoadString(&pPreviewData->lpButText, hApplet, IDS_BUTTEXT);
 204 }
 205
 206
 207 static VOID
 208 CalculateItemSize(PPREVIEW_DATA pPreviewData)
 209 {
 210     int width, height;
 211
 212     /* Calculate the inactive window rectangle */
 213     pPreviewData->rcInactiveFrame.left = pPreviewData->rcDesktop.left + 8;
 214     pPreviewData->rcInactiveFrame.top = pPreviewData->rcDesktop.top + 8;
 215     pPreviewData->rcInactiveFrame.right = pPreviewData->rcDesktop.right - 25;
 216     pPreviewData->rcInactiveFrame.bottom = pPreviewData->rcDesktop.bottom - 30;
 217
 218     /* Calculate the inactive caption rectangle */
 219     pPreviewData->rcInactiveCaption.left = pPreviewData->rcInactiveFrame.left + pPreviewData->cxEdge + 1/*3*/ + 1;
 220     pPreviewData->rcInactiveCaption.top = pPreviewData->rcInactiveFrame.top + pPreviewData->cyEdge + 1/*3*/ + 1;
 221     pPreviewData->rcInactiveCaption.right = pPreviewData->rcInactiveFrame.right - pPreviewData->cxEdge - 1/*3*/ - 1;
 222     pPreviewData->rcInactiveCaption.bottom = pPreviewData->rcInactiveFrame.top + pPreviewData->cyCaption + 1 + 2;
 223
 224     /* Calculate the inactive caption buttons rectangle */
 225     pPreviewData->rcInactiveCaptionButtons.left = pPreviewData->rcInactiveCaption.right - 2 - 2 - 3 * 16;
 226     pPreviewData->rcInactiveCaptionButtons.top = pPreviewData->rcInactiveCaption.top + 2;
 227     pPreviewData->rcInactiveCaptionButtons.right = pPreviewData->rcInactiveCaption.right - 2;
 228     pPreviewData->rcInactiveCaptionButtons.bottom = pPreviewData->rcInactiveCaption.bottom - 2;
 229
 230     /* Calculate the active window rectangle */
 231     pPreviewData->rcActiveFrame.left = pPreviewData->rcInactiveFrame.left + 3 + 1;
 232     pPreviewData->rcActiveFrame.top = pPreviewData->rcInactiveCaption.bottom + 1;
 233     pPreviewData->rcActiveFrame.right = pPreviewData->rcDesktop.right - 10;
 234     pPreviewData->rcActiveFrame.bottom = pPreviewData->rcDesktop.bottom - 25;
 235
 236     /* Calculate the active caption rectangle */
 237     pPreviewData->rcActiveCaption.left = pPreviewData->rcActiveFrame.left + 3 + 1;
 238     pPreviewData->rcActiveCaption.top = pPreviewData->rcActiveFrame.top + 3 + 1;
 239     pPreviewData->rcActiveCaption.right = pPreviewData->rcActiveFrame.right - 3 - 1;
 240     pPreviewData->rcActiveCaption.bottom = pPreviewData->rcActiveFrame.top + pPreviewData->cyCaption + 1 + 2;
 241
 242     /* Calculate the active caption buttons rectangle */
 243     pPreviewData->rcActiveCaptionButtons.left = pPreviewData->rcActiveCaption.right - 2 - 2 - 3 * 16;
 244     pPreviewData->rcActiveCaptionButtons.top = pPreviewData->rcActiveCaption.top + 2;
 245     pPreviewData->rcActiveCaptionButtons.right = pPreviewData->rcActiveCaption.right - 2;
 246     pPreviewData->rcActiveCaptionButtons.bottom = pPreviewData->rcActiveCaption.bottom - 2;
 247
 248     /* Calculate the active menu bar rectangle */
 249     pPreviewData->rcActiveMenuBar.left = pPreviewData->rcActiveFrame.left + 3 + 1;
 250     pPreviewData->rcActiveMenuBar.top = pPreviewData->rcActiveCaption.bottom + 1;
 251     pPreviewData->rcActiveMenuBar.right = pPreviewData->rcActiveFrame.right - 3 - 1;
 252     pPreviewData->rcActiveMenuBar.bottom = pPreviewData->rcActiveMenuBar.top + pPreviewData->cyMenu + 1;
 253
 254     /* Calculate the active client rectangle */
 255     pPreviewData->rcActiveClient.left = pPreviewData->rcActiveFrame.left + 3 + 1;
 256     pPreviewData->rcActiveClient.top = pPreviewData->rcActiveMenuBar.bottom; // + 1;
 257     pPreviewData->rcActiveClient.right = pPreviewData->rcActiveFrame.right - 3 - 1;
 258     pPreviewData->rcActiveClient.bottom = pPreviewData->rcActiveFrame.bottom - 3 - 1;
 259
 260     /* Calculate the active scroll rectangle */
 261     pPreviewData->rcActiveScroll.left = pPreviewData->rcActiveClient.right - 2 - pPreviewData->cxScrollbar;
 262     pPreviewData->rcActiveScroll.top = pPreviewData->rcActiveClient.top + 2;
 263     pPreviewData->rcActiveScroll.right = pPreviewData->rcActiveClient.right - 2;
 264     pPreviewData->rcActiveScroll.bottom = pPreviewData->rcActiveClient.bottom - 2;
 265
 266
 267     /* Dialog window */
 268     pPreviewData->rcDialogFrame.left = pPreviewData->rcActiveClient.left + 4;
 269     pPreviewData->rcDialogFrame.top = (pPreviewData->rcDesktop.bottom * 60) / 100;
 270     pPreviewData->rcDialogFrame.right = (pPreviewData->rcDesktop.right * 65) / 100;
 271     pPreviewData->rcDialogFrame.bottom = pPreviewData->rcDesktop.bottom - 5;
 272
 273     /* Calculate the dialog caption rectangle */
 274     pPreviewData->rcDialogCaption.left = pPreviewData->rcDialogFrame.left + 3;
 275     pPreviewData->rcDialogCaption.top = pPreviewData->rcDialogFrame.top + 3;
 276     pPreviewData->rcDialogCaption.right = pPreviewData->rcDialogFrame.right - 3;
 277     pPreviewData->rcDialogCaption.bottom = pPreviewData->rcDialogFrame.top + pPreviewData->cyCaption + 1 + 1;
 278
 279     /* Calculate the inactive caption buttons rectangle */
 280     pPreviewData->rcDialogCaptionButtons.left = pPreviewData->rcDialogCaption.right - 2 - 16;
 281     pPreviewData->rcDialogCaptionButtons.top = pPreviewData->rcDialogCaption.top + 2;
 282     pPreviewData->rcDialogCaptionButtons.right = pPreviewData->rcDialogCaption.right - 2;
 283     pPreviewData->rcDialogCaptionButtons.bottom = pPreviewData->rcDialogCaption.bottom - 2;
 284
 285     /* Calculate the dialog client rectangle */
 286     pPreviewData->rcDialogClient.left = pPreviewData->rcDialogFrame.left + 3;
 287     pPreviewData->rcDialogClient.top = pPreviewData->rcDialogCaption.bottom + 1;
 288     pPreviewData->rcDialogClient.right = pPreviewData->rcDialogFrame.right - 3;
 289     pPreviewData->rcDialogClient.bottom = pPreviewData->rcDialogFrame.bottom - 3;
 290
 291     /* Calculate the dialog button rectangle */
 292     width = 80;
 293     height = 28;
 294
 295     pPreviewData->rcDialogButton.left =
 296         (pPreviewData->rcDialogClient.right + pPreviewData->rcDialogClient.left - width) / 2;
 297     pPreviewData->rcDialogButton.right = pPreviewData->rcDialogButton.left + width;
 298     pPreviewData->rcDialogButton.bottom = pPreviewData->rcDialogClient.bottom - 2;
 299     pPreviewData->rcDialogButton.top = pPreviewData->rcDialogButton.bottom - height;
 300 }
 301
 302
 303 static VOID
 304 OnSize(INT cx, INT cy, PPREVIEW_DATA pPreviewData)
 305 {
 306     /* Get Desktop rectangle */
 307     pPreviewData->rcDesktop.left = 0;
 308     pPreviewData->rcDesktop.top = 0;
 309     pPreviewData->rcDesktop.right = cx;
 310     pPreviewData->rcDesktop.bottom = cy;
 311
 312     CalculateItemSize(pPreviewData);
 313 }
 314
 315
 316 static VOID
 317 OnPaint(HWND hwnd, PPREVIEW_DATA pPreviewData)
 318 {
 319     PAINTSTRUCT ps;
 320     HFONT hOldFont;
 321     HDC hdc;
 322     RECT rc;
 323
 324     hdc = BeginPaint(hwnd, &ps);
 325
 326     /* Desktop */
 327     FillRect(hdc, &pPreviewData->rcDesktop, pPreviewData->hbrDesktop);
 328
 329     /* Inactive Window */
 330     DrawEdge(hdc, &pPreviewData->rcInactiveFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE);
 331     SetTextColor(hdc, pPreviewData->clrInactiveCaptionText);
 332     DrawCaptionTemp(NULL, hdc, &pPreviewData->rcInactiveCaption,  pPreviewData->hCaptionFont,
 333                     NULL, pPreviewData->lpInAct, DC_GRADIENT | DC_ICON | DC_TEXT);
 334     DrawCaptionButtons(hdc, &pPreviewData->rcInactiveCaption, TRUE, pPreviewData->cyCaption - 2);
 335
 336     /* Active Window */
 337     DrawEdge(hdc, &pPreviewData->rcActiveFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE);
 338     SetTextColor(hdc, pPreviewData->clrActiveCaptionText);
 339     DrawCaptionTemp(NULL, hdc, &pPreviewData->rcActiveCaption, pPreviewData->hCaptionFont,
 340                     NULL, pPreviewData->lpAct, DC_ACTIVE | DC_GRADIENT | DC_ICON | DC_TEXT);
 341     DrawCaptionButtons(hdc, &pPreviewData->rcActiveCaption, TRUE, pPreviewData->cyCaption - 2);
 342
 343     /* FIXME: Draw the menu bar */
 344     DrawMenuBarTemp(hwnd, hdc, &pPreviewData->rcActiveMenuBar,
 345                     pPreviewData->hMenu /*HMENU hMenu*/,
 346                     pPreviewData->hMessageFont /*HFONT hFont*/);
 347
 348     /* Draw the client area */
 349     CopyRect(&rc, &pPreviewData->rcActiveClient);
 350     DrawEdge(hdc, &rc, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 351     FillRect(hdc, &rc, pPreviewData->hbrWindow);
 352
 353     /* Draw the client text */
 354     CopyRect(&rc, &pPreviewData->rcActiveClient);
 355     rc.left += 4;
 356     rc.top += 2;
 357     SetTextColor(hdc, pPreviewData->clrWindowText);
 358     hOldFont = SelectObject(hdc, pPreviewData->hMessageFont);
 359     DrawText(hdc, pPreviewData->lpWinTxt, lstrlen(pPreviewData->lpWinTxt), &rc, DT_LEFT);
 360     SelectObject(hdc, hOldFont);
 361
 362     /* Draw the scroll bar */
 363     DrawScrollbar(hdc, &pPreviewData->rcActiveScroll, pPreviewData->hbrScrollbar);
 364
 365     /* Dialog Window */
 366     DrawEdge(hdc, &pPreviewData->rcDialogFrame, EDGE_RAISED, BF_RECT | BF_MIDDLE);
 367     SetTextColor(hdc, pPreviewData->clrActiveCaptionText);
 368     DrawCaptionTemp(NULL, hdc, &pPreviewData->rcDialogCaption, pPreviewData->hCaptionFont,
 369                     NULL, pPreviewData->lpMessBox, DC_ACTIVE | DC_GRADIENT | DC_ICON | DC_TEXT);
 370     DrawCaptionButtons(hdc, &pPreviewData->rcDialogCaption, FALSE, pPreviewData->cyCaption - 2);
 371
 372     /* Draw the dialog text */
 373     CopyRect(&rc, &pPreviewData->rcDialogClient);
 374     rc.left += 4;
 375     rc.top += 2;
 376     SetTextColor(hdc, RGB(0,0,0));
 377     hOldFont = SelectObject(hdc, pPreviewData->hMessageFont);
 378     DrawText(hdc, pPreviewData->lpMessText, lstrlen(pPreviewData->lpMessText), &rc, DT_LEFT);
 379     SelectObject(hdc, hOldFont);
 380
 381     /* Draw Button */
 382     DrawFrameControl(hdc, &pPreviewData->rcDialogButton, DFC_BUTTON, DFCS_BUTTONPUSH);
 383     CopyRect(&rc, &pPreviewData->rcDialogButton);
 384     SetTextColor(hdc, pPreviewData->clrButtonText);
 385     hOldFont = SelectObject(hdc, pPreviewData->hMessageFont);
 386     DrawText(hdc, pPreviewData->lpButText, lstrlen(pPreviewData->lpButText), &rc, DT_VCENTER | DT_CENTER | DT_SINGLELINE);
 387     SelectObject(hdc, hOldFont);
 388
 389     EndPaint(hwnd, &ps);
 390 }
 391
 392
 393 static VOID
 394 OnLButtonDown(HWND hwnd, int xPos, int yPos, PPREVIEW_DATA pPreviewData)
 395 {
 396     UINT type = IDX_DESKTOP;
 397     POINT pt;
 398
 399     pt.x = xPos;
 400     pt.y = yPos;
 401
 402     if (PtInRect(&pPreviewData->rcInactiveFrame, pt))
 403         type = IDX_INACTIVE_BORDER;
 404
 405     if (PtInRect(&pPreviewData->rcInactiveCaption, pt))
 406         type = IDX_INACTIVE_CAPTION;
 407
 408     if (PtInRect(&pPreviewData->rcInactiveCaptionButtons, pt))
 409         type = IDX_CAPTION_BUTTON;
 410
 411     if (PtInRect(&pPreviewData->rcActiveFrame, pt))
 412         type = IDX_ACTIVE_BORDER;
 413
 414     if (PtInRect(&pPreviewData->rcActiveCaption, pt))
 415         type = IDX_ACTIVE_CAPTION;
 416
 417     if (PtInRect(&pPreviewData->rcActiveCaptionButtons, pt))
 418         type = IDX_CAPTION_BUTTON;
 419
 420     if (PtInRect(&pPreviewData->rcActiveMenuBar, pt))
 421         type = IDX_MENU;
 422
 423 //    if (PtInRect(&pPreviewData->rcSelectedMenuItem, pt))
 424 //        type = IDX_SELECTION;
 425
 426     if (PtInRect(&pPreviewData->rcActiveClient, pt))
 427         type = IDX_WINDOW;
 428
 429     if (PtInRect(&pPreviewData->rcActiveScroll, pt))
 430         type = IDX_SCROLLBAR;
 431
 432     if (PtInRect(&pPreviewData->rcDialogFrame, pt))
 433         type = IDX_DIALOG;
 434
 435     if (PtInRect(&pPreviewData->rcDialogCaption, pt))
 436         type = IDX_ACTIVE_CAPTION;
 437
 438     if (PtInRect(&pPreviewData->rcDialogCaptionButtons, pt))
 439         type = IDX_CAPTION_BUTTON;
 440
 441     if (PtInRect(&pPreviewData->rcDialogButton, pt))
 442         type = IDX_3D_OBJECTS;
 443
 444     SendMessage(GetParent(hwnd), WM_USER, 0, type);
 445 }
 446
 447
 448 static VOID
 449 OnDestroy(PPREVIEW_DATA pPreviewData)
 450 {
 451     DeleteObject(pPreviewData->hbrScrollbar);
 452     DeleteObject(pPreviewData->hbrDesktop);
 453     DeleteObject(pPreviewData->hbrWindow);
 454
 455     DeleteObject(pPreviewData->hCaptionFont);
 456     DeleteObject(pPreviewData->hMenuFont);
 457     DeleteObject(pPreviewData->hMessageFont);
 458
 459     DestroyMenu(pPreviewData->hMenu);
 460
 461     LocalFree((HLOCAL)pPreviewData->lpInAct);
 462     LocalFree((HLOCAL)pPreviewData->lpAct);
 463     LocalFree((HLOCAL)pPreviewData->lpWinTxt);
 464     LocalFree((HLOCAL)pPreviewData->lpMessBox);
 465     LocalFree((HLOCAL)pPreviewData->lpMessText);
 466     LocalFree((HLOCAL)pPreviewData->lpButText);
 467 }
 468
 469
 470 static LRESULT CALLBACK
 471 PreviewWndProc(HWND hwnd,
 472                UINT uMsg,
 473                WPARAM wParam,
 474                LPARAM lParam)
 475 {
 476     PPREVIEW_DATA pPreviewData;
 477
 478     pPreviewData = (PPREVIEW_DATA)GetWindowLongPtr(hwnd, GWLP_USERDATA);
 479
 480     switch (uMsg)
 481     {
 482         case WM_CREATE:
 483             pPreviewData = (PPREVIEW_DATA)HeapAlloc(GetProcessHeap(),
 484                                                     HEAP_ZERO_MEMORY,
 485                                                     sizeof(PREVIEW_DATA));
 486             if (!pPreviewData)
 487                 return -1;
 488
 489             SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)pPreviewData);
 490             OnCreate(hwnd, pPreviewData);
 491             break;
 492
 493         case WM_SIZE:
 494             OnSize(LOWORD(lParam), HIWORD(lParam), pPreviewData);
 495             break;
 496
 497         case WM_PAINT:
 498             OnPaint(hwnd, pPreviewData);
 499             break;
 500
 501         case WM_LBUTTONDOWN:
 502             OnLButtonDown(hwnd, LOWORD(lParam), HIWORD(lParam), pPreviewData);
 503             break;
 504
 505         case WM_DESTROY:
 506             OnDestroy(pPreviewData);
 507             HeapFree(GetProcessHeap(), 0, pPreviewData);
 508             break;
 509
 510         case PVM_GETCYCAPTION:
 511             return pPreviewData->cyCaption;
 512
 513         case PVM_SETCYCAPTION:
 514             if ((INT)lParam > 0)
 515             {
 516                 pPreviewData->cyCaption = (INT)lParam;
 517                 CalculateItemSize(pPreviewData);
 518                 InvalidateRect(hwnd, NULL, FALSE);
 519             }
 520             break;
 521
 522         case PVM_GETCYMENU:
 523             return pPreviewData->cyMenu;
 524
 525         case PVM_SETCYMENU:
 526             if ((INT)lParam > 0)
 527             {
 528                 pPreviewData->cyMenu = (INT)lParam;
 529                 CalculateItemSize(pPreviewData);
 530                 InvalidateRect(hwnd, NULL, FALSE);
 531             }
 532             break;
 533
 534         case PVM_GETCXSCROLLBAR:
 535             return pPreviewData->cxScrollbar;
 536
 537         case PVM_SETCXSCROLLBAR:
 538             if ((INT)lParam > 0)
 539             {
 540                 pPreviewData->cxScrollbar = (INT)lParam;
 541                 CalculateItemSize(pPreviewData);
 542                 InvalidateRect(hwnd, NULL, FALSE);
 543             }
 544             break;
 545
 546         case PVM_GETCYSIZEFRAME:
 547             return pPreviewData->cySizeFrame;
 548
 549         case PVM_SETCYSIZEFRAME:
 550             if ((INT)lParam > 0)
 551             {
 552                 pPreviewData->cySizeFrame = (INT)lParam;
 553                 CalculateItemSize(pPreviewData);
 554                 InvalidateRect(hwnd, NULL, FALSE);
 555             }
 556             break;
 557
 558         default:
 559             DefWindowProc(hwnd,
 560                           uMsg,
 561                           wParam,
 562                           lParam);
 563     }
 564
 565     return TRUE;
 566 }
 567
 568
 569 BOOL
 570 RegisterPreviewControl(IN HINSTANCE hInstance)
 571 {
 572     WNDCLASSEX wc = {0};
 573
 574     wc.cbSize = sizeof(WNDCLASSEX);
 575     wc.lpfnWndProc = PreviewWndProc;
 576     wc.hInstance = hInstance;
 577     wc.hCursor = LoadCursor(NULL, IDC_ARROW);
 578     wc.hbrBackground = (HBRUSH)NULL; //(COLOR_BTNFACE + 1);
 579     wc.lpszClassName = szPreviewWndClass;
 580
 581     return RegisterClassEx(&wc) != (ATOM)0;
 582 }
 583
 584
 585 VOID
 586 UnregisterPreviewControl(IN HINSTANCE hInstance)
 587 {
 588     UnregisterClass(szPreviewWndClass,
 589                     hInstance);
 590 }