src/msw/frame.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/frame.cpp
   3 // Purpose:     wxFrame
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "frame.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/setup.h"
  33     #include "wx/frame.h"
  34     #include "wx/menu.h"
  35     #include "wx/app.h"
  36     #include "wx/utils.h"
  37     #include "wx/dialog.h"
  38     #include "wx/settings.h"
  39     #include "wx/dcclient.h"
  40 #endif // WX_PRECOMP
  41
  42 #include "wx/msw/private.h"
  43
  44 #if wxUSE_STATUSBAR
  45     #include "wx/statusbr.h"
  46     #include "wx/generic/statusbr.h"
  47 #endif // wxUSE_STATUSBAR
  48
  49 #if wxUSE_TOOLBAR
  50     #include "wx/toolbar.h"
  51 #endif // wxUSE_TOOLBAR
  52
  53 #include "wx/menuitem.h"
  54 #include "wx/log.h"
  55
  56 // ----------------------------------------------------------------------------
  57 // globals
  58 // ----------------------------------------------------------------------------
  59
  60 extern wxWindowList wxModelessWindows;
  61 extern wxList WXDLLEXPORT wxPendingDelete;
  62 extern const wxChar *wxFrameClassName;
  63 extern wxMenu *wxCurrentPopupMenu;
  64
  65 // ----------------------------------------------------------------------------
  66 // event tables
  67 // ----------------------------------------------------------------------------
  68
  69 BEGIN_EVENT_TABLE(wxFrame, wxFrameBase)
  70     EVT_ACTIVATE(wxFrame::OnActivate)
  71     EVT_SYS_COLOUR_CHANGED(wxFrame::OnSysColourChanged)
  72 END_EVENT_TABLE()
  73
  74 IMPLEMENT_DYNAMIC_CLASS(wxFrame, wxWindow)
  75
  76 // ============================================================================
  77 // implementation
  78 // ============================================================================
  79
  80 // ----------------------------------------------------------------------------
  81 // static class members
  82 // ----------------------------------------------------------------------------
  83
  84 #if wxUSE_NATIVE_STATUSBAR
  85     bool wxFrame::m_useNativeStatusBar = TRUE;
  86 #else
  87     bool wxFrame::m_useNativeStatusBar = FALSE;
  88 #endif
  89
  90 // ----------------------------------------------------------------------------
  91 // creation/destruction
  92 // ----------------------------------------------------------------------------
  93
  94 void wxFrame::Init()
  95 {
  96     m_iconized = FALSE;
  97
  98 #if wxUSE_TOOLTIPS
  99     m_hwndToolTip = 0;
 100 #endif
 101 }
 102
 103 bool wxFrame::Create(wxWindow *parent,
 104                      wxWindowID id,
 105                      const wxString& title,
 106                      const wxPoint& pos,
 107                      const wxSize& size,
 108                      long style,
 109                      const wxString& name)
 110 {
 111   SetName(name);
 112   m_windowStyle = style;
 113   m_frameMenuBar = NULL;
 114   m_frameToolBar = NULL;
 115   m_frameStatusBar = NULL;
 116
 117   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 118
 119   if ( id > -1 )
 120     m_windowId = id;
 121   else
 122     m_windowId = (int)NewControlId();
 123
 124   if (parent) parent->AddChild(this);
 125
 126   int x = pos.x;
 127   int y = pos.y;
 128   int width = size.x;
 129   int height = size.y;
 130
 131   m_iconized = FALSE;
 132
 133   // we pass NULL as parent to MSWCreate because frames with parents behave
 134   // very strangely under Win95 shell
 135   // Alteration by JACS: keep normal Windows behaviour (float on top of parent)
 136   // with this style.
 137   if ((m_windowStyle & wxFRAME_FLOAT_ON_PARENT) == 0)
 138     parent = NULL;
 139
 140   if (!parent)
 141     wxTopLevelWindows.Append(this);
 142
 143   MSWCreate(m_windowId, parent, wxFrameClassName, this, title,
 144             x, y, width, height, style);
 145
 146   wxModelessWindows.Append(this);
 147   return TRUE;
 148 }
 149
 150 wxFrame::~wxFrame()
 151 {
 152   m_isBeingDeleted = TRUE;
 153   wxTopLevelWindows.DeleteObject(this);
 154
 155   DeleteAllBars();
 156
 157   if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 158   {
 159     wxTheApp->SetTopWindow(NULL);
 160
 161     if (wxTheApp->GetExitOnFrameDelete())
 162     {
 163        PostQuitMessage(0);
 164     }
 165   }
 166
 167   wxModelessWindows.DeleteObject(this);
 168
 169   // For some reason, wxWindows can activate another task altogether
 170   // when a frame is destroyed after a modal dialog has been invoked.
 171   // Try to bring the parent to the top.
 172   // MT:Only do this if this frame is currently the active window, else weird
 173   // things start to happen
 174   if ( wxGetActiveWindow() == this )
 175   if (GetParent() && GetParent()->GetHWND())
 176     ::BringWindowToTop((HWND) GetParent()->GetHWND());
 177 }
 178
 179 // Get size *available for subwindows* i.e. excluding menu bar, toolbar etc.
 180 void wxFrame::DoGetClientSize(int *x, int *y) const
 181 {
 182   RECT rect;
 183   ::GetClientRect(GetHwnd(), &rect);
 184
 185 #if wxUSE_STATUSBAR
 186   if ( GetStatusBar() )
 187   {
 188     int statusX, statusY;
 189     GetStatusBar()->GetClientSize(&statusX, &statusY);
 190     rect.bottom -= statusY;
 191   }
 192 #endif // wxUSE_STATUSBAR
 193
 194   wxPoint pt(GetClientAreaOrigin());
 195   rect.bottom -= pt.y;
 196   rect.right -= pt.x;
 197
 198   if ( x )
 199     *x = rect.right;
 200   if ( y )
 201     *y = rect.bottom;
 202 }
 203
 204 // Set the client size (i.e. leave the calculation of borders etc.
 205 // to wxWindows)
 206 void wxFrame::DoSetClientSize(int width, int height)
 207 {
 208   HWND hWnd = GetHwnd();
 209
 210   RECT rect;
 211   ::GetClientRect(hWnd, &rect);
 212
 213   RECT rect2;
 214   GetWindowRect(hWnd, &rect2);
 215
 216   // Find the difference between the entire window (title bar and all)
 217   // and the client area; add this to the new client size to move the
 218   // window
 219   int actual_width = rect2.right - rect2.left - rect.right + width;
 220   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 221
 222 #if wxUSE_STATUSBAR
 223   if ( GetStatusBar() )
 224   {
 225     int statusX, statusY;
 226     GetStatusBar()->GetClientSize(&statusX, &statusY);
 227     actual_height += statusY;
 228   }
 229 #endif // wxUSE_STATUSBAR
 230
 231   wxPoint pt(GetClientAreaOrigin());
 232   actual_width += pt.y;
 233   actual_height += pt.x;
 234
 235   POINT point;
 236   point.x = rect2.left;
 237   point.y = rect2.top;
 238
 239   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 240
 241   wxSizeEvent event(wxSize(width, height), m_windowId);
 242   event.SetEventObject( this );
 243   GetEventHandler()->ProcessEvent(event);
 244 }
 245
 246 void wxFrame::DoGetSize(int *width, int *height) const
 247 {
 248   RECT rect;
 249   GetWindowRect(GetHwnd(), &rect);
 250   *width = rect.right - rect.left;
 251   *height = rect.bottom - rect.top;
 252 }
 253
 254 void wxFrame::DoGetPosition(int *x, int *y) const
 255 {
 256   RECT rect;
 257   GetWindowRect(GetHwnd(), &rect);
 258   POINT point;
 259   point.x = rect.left;
 260   point.y = rect.top;
 261
 262   *x = point.x;
 263   *y = point.y;
 264 }
 265
 266 // ----------------------------------------------------------------------------
 267 // variations around ::ShowWindow()
 268 // ----------------------------------------------------------------------------
 269
 270 void wxFrame::DoShowWindow(int nShowCmd)
 271 {
 272     ::ShowWindow(GetHwnd(), nShowCmd);
 273
 274     m_iconized = nShowCmd == SW_MINIMIZE;
 275 }
 276
 277 bool wxFrame::Show(bool show)
 278 {
 279     DoShowWindow(show ? SW_SHOW : SW_HIDE);
 280
 281     if ( show )
 282     {
 283         ::BringWindowToTop(GetHwnd());
 284
 285         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 286         event.SetEventObject( this );
 287         GetEventHandler()->ProcessEvent(event);
 288     }
 289     else
 290     {
 291         // Try to highlight the correct window (the parent)
 292         if ( GetParent() )
 293         {
 294             HWND hWndParent = GetHwndOf(GetParent());
 295             if (hWndParent)
 296                 ::BringWindowToTop(hWndParent);
 297         }
 298     }
 299
 300     return TRUE;
 301 }
 302
 303 void wxFrame::Iconize(bool iconize)
 304 {
 305     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 306 }
 307
 308 void wxFrame::Maximize(bool maximize)
 309 {
 310     DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 311 }
 312
 313 void wxFrame::Restore()
 314 {
 315     DoShowWindow(SW_RESTORE);
 316 }
 317
 318 bool wxFrame::IsIconized() const
 319 {
 320   ((wxFrame *)this)->m_iconized = (::IsIconic(GetHwnd()) != 0);
 321   return m_iconized;
 322 }
 323
 324 // Is it maximized?
 325 bool wxFrame::IsMaximized() const
 326 {
 327     return (::IsZoomed(GetHwnd()) != 0);
 328 }
 329
 330 void wxFrame::SetIcon(const wxIcon& icon)
 331 {
 332     wxFrameBase::SetIcon(icon);
 333
 334 #if defined(__WIN95__)
 335     if ( m_icon.Ok() )
 336     {
 337         SendMessage(GetHwnd(), WM_SETICON,
 338                     (WPARAM)TRUE, (LPARAM)(HICON) m_icon.GetHICON());
 339     }
 340 #endif // __WIN95__
 341 }
 342
 343 #if wxUSE_STATUSBAR
 344 wxStatusBar *wxFrame::OnCreateStatusBar(int number,
 345                                         long style,
 346                                         wxWindowID id,
 347                                         const wxString& name)
 348 {
 349     wxStatusBar *statusBar = NULL;
 350
 351 #if wxUSE_NATIVE_STATUSBAR
 352     if ( UsesNativeStatusBar() )
 353     {
 354         statusBar = (wxStatusBar *)new wxStatusBar95(this, id, style);
 355
 356         statusBar->SetFieldsCount(number);
 357     }
 358     else
 359 #endif
 360     {
 361         statusBar = (wxStatusBar *)new wxStatusBarGeneric(this, id, style, name);
 362
 363         // Set the height according to the font and the border size
 364         wxClientDC dc(statusBar);
 365         dc.SetFont(statusBar->GetFont());
 366
 367         wxCoord y;
 368         dc.GetTextExtent(_T("X"), NULL, &y );
 369
 370         int height = (int)( (11*y)/10 + 2*statusBar->GetBorderY());
 371
 372         statusBar->SetSize(-1, -1, -1, height);
 373
 374         statusBar->SetFieldsCount(number);
 375     }
 376
 377     return statusBar;
 378 }
 379
 380 void wxFrame::PositionStatusBar()
 381 {
 382     if ( !m_frameStatusBar )
 383         return;
 384
 385     // native status bar positions itself, but we must forward the WM_SIZE
 386     // messages to it
 387 #if wxUSE_NATIVE_STATUSBAR
 388     wxStatusBar95 *sb = wxDynamicCast(m_frameStatusBar, wxStatusBar95);
 389     if ( sb )
 390     {
 391         wxSizeEvent event(GetSize(), sb->GetId());
 392         event.SetEventObject(sb);
 393
 394         sb->GetEventHandler()->ProcessEvent(event);
 395     }
 396     else
 397 #endif // wxUSE_NATIVE_STATUSBAR
 398     {
 399         int w, h;
 400         GetClientSize(&w, &h);
 401         int sw, sh;
 402         m_frameStatusBar->GetSize(&sw, &sh);
 403
 404         // Since we wish the status bar to be directly under the client area,
 405         // we use the adjusted sizes without using wxSIZE_NO_ADJUSTMENTS.
 406         m_frameStatusBar->SetSize(0, h, w, sh);
 407     }
 408 }
 409 #endif // wxUSE_STATUSBAR
 410
 411 void wxFrame::DetachMenuBar()
 412 {
 413     if (m_frameMenuBar)
 414     {
 415         m_frameMenuBar->Detach();
 416         m_frameMenuBar = NULL;
 417     }
 418 }
 419
 420 void wxFrame::SetMenuBar(wxMenuBar *menu_bar)
 421 {
 422     if (!menu_bar)
 423     {
 424         DetachMenuBar();
 425         return;
 426     }
 427
 428     m_frameMenuBar = NULL;
 429
 430     // Can set a menubar several times.
 431     // TODO: how to prevent a memory leak if you have a currently-unattached
 432     // menubar? wxWindows assumes that the frame will delete the menu (otherwise
 433     // there are problems for MDI).
 434     if (menu_bar->GetHMenu())
 435     {
 436         m_hMenu = menu_bar->GetHMenu();
 437     }
 438     else
 439     {
 440         menu_bar->Detach();
 441
 442         m_hMenu = menu_bar->Create();
 443
 444         if ( !m_hMenu )
 445             return;
 446     }
 447
 448     InternalSetMenuBar();
 449
 450     m_frameMenuBar = menu_bar;
 451     menu_bar->Attach(this);
 452
 453 #if 0 // Old code that assumes only one call of SetMenuBar per frame.
 454     if (!menu_bar)
 455     {
 456         DetachMenuBar();
 457         return;
 458     }
 459
 460     wxCHECK_RET( !menu_bar->GetFrame(), wxT("this menubar is already attached") );
 461
 462     if (m_frameMenuBar)
 463         delete m_frameMenuBar;
 464
 465     m_hMenu = menu_bar->Create();
 466
 467     if ( !m_hMenu )
 468         return;
 469
 470     InternalSetMenuBar();
 471
 472     m_frameMenuBar = menu_bar;
 473     menu_bar->Attach(this);
 474 #endif
 475 }
 476
 477 void wxFrame::InternalSetMenuBar()
 478 {
 479     if ( !::SetMenu(GetHwnd(), (HMENU)m_hMenu) )
 480     {
 481         wxLogLastError("SetMenu");
 482     }
 483 }
 484
 485 // Responds to colour changes, and passes event on to children.
 486 void wxFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 487 {
 488     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 489     Refresh();
 490
 491     if ( m_frameStatusBar )
 492     {
 493         wxSysColourChangedEvent event2;
 494         event2.SetEventObject( m_frameStatusBar );
 495         m_frameStatusBar->GetEventHandler()->ProcessEvent(event2);
 496     }
 497
 498     // Propagate the event to the non-top-level children
 499     wxWindow::OnSysColourChanged(event);
 500 }
 501
 502 /*
 503  * Frame window
 504  *
 505  */
 506
 507 bool wxFrame::MSWCreate(int id, wxWindow *parent, const wxChar *wclass, wxWindow *wx_win, const wxChar *title,
 508                    int x, int y, int width, int height, long style)
 509
 510 {
 511   m_defaultIcon = (WXHICON) (wxSTD_FRAME_ICON ? wxSTD_FRAME_ICON : wxDEFAULT_FRAME_ICON);
 512
 513   // If child windows aren't properly drawn initially, WS_CLIPCHILDREN
 514   // could be the culprit. But without it, you can get a lot of flicker.
 515
 516   DWORD msflags = 0;
 517   if ((style & wxCAPTION) == wxCAPTION)
 518     msflags = WS_OVERLAPPED;
 519   else
 520     msflags = WS_POPUP;
 521
 522   if (style & wxMINIMIZE_BOX)
 523     msflags |= WS_MINIMIZEBOX;
 524   if (style & wxMAXIMIZE_BOX)
 525     msflags |= WS_MAXIMIZEBOX;
 526   if (style & wxTHICK_FRAME)
 527     msflags |= WS_THICKFRAME;
 528   if (style & wxSYSTEM_MENU)
 529     msflags |= WS_SYSMENU;
 530   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 531     msflags |= WS_MINIMIZE;
 532   if (style & wxMAXIMIZE)
 533     msflags |= WS_MAXIMIZE;
 534   if (style & wxCAPTION)
 535     msflags |= WS_CAPTION;
 536   if (style & wxCLIP_CHILDREN)
 537     msflags |= WS_CLIPCHILDREN;
 538
 539   // Keep this in wxFrame because it saves recoding this function
 540   // in wxTinyFrame
 541 #if wxUSE_ITSY_BITSY
 542   if (style & wxTINY_CAPTION_VERT)
 543     msflags |= IBS_VERTCAPTION;
 544   if (style & wxTINY_CAPTION_HORIZ)
 545     msflags |= IBS_HORZCAPTION;
 546 #else
 547   if (style & wxTINY_CAPTION_VERT)
 548     msflags |= WS_CAPTION;
 549   if (style & wxTINY_CAPTION_HORIZ)
 550     msflags |= WS_CAPTION;
 551 #endif
 552   if ((style & wxTHICK_FRAME) == 0)
 553     msflags |= WS_BORDER;
 554
 555   WXDWORD extendedStyle = MakeExtendedStyle(style);
 556
 557 #if !defined(__WIN16__) && !defined(__SC__)
 558   if (style & wxFRAME_TOOL_WINDOW)
 559     extendedStyle |= WS_EX_TOOLWINDOW;
 560 #endif
 561
 562   if (style & wxSTAY_ON_TOP)
 563     extendedStyle |= WS_EX_TOPMOST;
 564
 565   m_iconized = FALSE;
 566   if ( !wxWindow::MSWCreate(id, parent, wclass, wx_win, title, x, y, width, height,
 567          msflags, NULL, extendedStyle) )
 568          return FALSE;
 569
 570   // Seems to be necessary if we use WS_POPUP
 571   // style instead of WS_OVERLAPPED
 572   if (width > -1 && height > -1)
 573     ::PostMessage(GetHwnd(), WM_SIZE, SIZE_RESTORED, MAKELPARAM(width, height));
 574
 575   return TRUE;
 576 }
 577
 578 // Default activation behaviour - set the focus for the first child
 579 // subwindow found.
 580 void wxFrame::OnActivate(wxActivateEvent& event)
 581 {
 582     if ( !event.GetActive() )
 583     {
 584         event.Skip();
 585
 586         return;
 587     }
 588
 589     wxLogTrace(_T("focus"), _T("wxFrame %08x activated."), m_hWnd);
 590
 591     for ( wxWindowList::Node *node = GetChildren().GetFirst();
 592           node;
 593           node = node->GetNext() )
 594     {
 595         // FIXME all this is totally bogus - we need to do the same as wxPanel,
 596         //       but how to do it without duplicating the code?
 597
 598         // restore focus
 599         wxWindow *child = node->GetData();
 600
 601         if ( !child->IsTopLevel()
 602 #if wxUSE_TOOLBAR
 603              && !wxDynamicCast(child, wxToolBar)
 604 #endif // wxUSE_TOOLBAR
 605 #if wxUSE_STATUSBAR
 606              && !wxDynamicCast(child, wxStatusBar)
 607 #endif // wxUSE_STATUSBAR
 608            )
 609         {
 610             child->SetFocus();
 611             break;
 612         }
 613     }
 614 }
 615
 616 // ----------------------------------------------------------------------------
 617 // tool/status bar stuff
 618 // ----------------------------------------------------------------------------
 619
 620 #if wxUSE_TOOLBAR
 621
 622 wxToolBar* wxFrame::CreateToolBar(long style, wxWindowID id, const wxString& name)
 623 {
 624     if ( wxFrameBase::CreateToolBar(style, id, name) )
 625     {
 626         PositionToolBar();
 627     }
 628
 629     return m_frameToolBar;
 630 }
 631
 632 void wxFrame::PositionToolBar()
 633 {
 634     RECT rect;
 635     ::GetClientRect(GetHwnd(), &rect);
 636
 637 #if wxUSE_STATUSBAR
 638     if ( GetStatusBar() )
 639     {
 640         int statusX, statusY;
 641         GetStatusBar()->GetClientSize(&statusX, &statusY);
 642         rect.bottom -= statusY;
 643     }
 644 #endif // wxUSE_STATUSBAR
 645
 646     if ( GetToolBar() )
 647     {
 648         int tw, th;
 649         GetToolBar()->GetSize(&tw, &th);
 650
 651         if ( GetToolBar()->GetWindowStyleFlag() & wxTB_VERTICAL )
 652         {
 653             th = rect.bottom;
 654         }
 655         else
 656         {
 657             tw = rect.right;
 658         }
 659
 660         // Use the 'real' MSW position here
 661         GetToolBar()->SetSize(0, 0, tw, th, wxSIZE_NO_ADJUSTMENTS);
 662     }
 663 }
 664 #endif // wxUSE_TOOLBAR
 665
 666 // ----------------------------------------------------------------------------
 667 // frame state (iconized/maximized/...)
 668 // ----------------------------------------------------------------------------
 669
 670 // propagate our state change to all child frames: this allows us to emulate X
 671 // Windows behaviour where child frames float independently of the parent one
 672 // on the desktop, but are iconized/restored with it
 673 void wxFrame::IconizeChildFrames(bool bIconize)
 674 {
 675     for ( wxWindowList::Node *node = GetChildren().GetFirst();
 676           node;
 677           node = node->GetNext() )
 678     {
 679         wxWindow *win = node->GetData();
 680
 681         if ( win->IsKindOf(CLASSINFO(wxFrame)) )
 682         {
 683             ((wxFrame *)win)->Iconize(bIconize);
 684         }
 685     }
 686 }
 687
 688 // ===========================================================================
 689 // message processing
 690 // ===========================================================================
 691
 692 // ---------------------------------------------------------------------------
 693 // preprocessing
 694 // ---------------------------------------------------------------------------
 695
 696 bool wxFrame::MSWTranslateMessage(WXMSG* pMsg)
 697 {
 698     if ( wxWindow::MSWTranslateMessage(pMsg) )
 699         return TRUE;
 700
 701     // try the menu bar accels
 702     wxMenuBar *menuBar = GetMenuBar();
 703     if ( !menuBar )
 704         return FALSE;
 705
 706     const wxAcceleratorTable& acceleratorTable = menuBar->GetAccelTable();
 707     return acceleratorTable.Translate(this, pMsg);
 708 }
 709
 710 // ---------------------------------------------------------------------------
 711 // our private (non virtual) message handlers
 712 // ---------------------------------------------------------------------------
 713
 714 bool wxFrame::HandlePaint()
 715 {
 716     RECT rect;
 717     if ( GetUpdateRect(GetHwnd(), &rect, FALSE) )
 718     {
 719         if ( m_iconized )
 720         {
 721             HICON hIcon = m_icon.Ok() ? GetHiconOf(m_icon)
 722                                       : (HICON)m_defaultIcon;
 723
 724             // Hold a pointer to the dc so long as the OnPaint() message
 725             // is being processed
 726             PAINTSTRUCT ps;
 727             HDC hdc = ::BeginPaint(GetHwnd(), &ps);
 728
 729             // Erase background before painting or we get white background
 730             MSWDefWindowProc(WM_ICONERASEBKGND, (WORD)(LONG)ps.hdc, 0L);
 731
 732             if ( hIcon )
 733             {
 734                 RECT rect;
 735                 ::GetClientRect(GetHwnd(), &rect);
 736
 737                 // FIXME: why hardcoded?
 738                 static const int icon_width = 32;
 739                 static const int icon_height = 32;
 740
 741                 int icon_x = (int)((rect.right - icon_width)/2);
 742                 int icon_y = (int)((rect.bottom - icon_height)/2);
 743
 744                 ::DrawIcon(hdc, icon_x, icon_y, hIcon);
 745             }
 746
 747             ::EndPaint(GetHwnd(), &ps);
 748
 749             return TRUE;
 750         }
 751         else
 752         {
 753             return wxWindow::HandlePaint();
 754         }
 755     }
 756     else
 757     {
 758         // nothing to paint - processed
 759         return TRUE;
 760     }
 761 }
 762
 763 bool wxFrame::HandleSize(int x, int y, WXUINT id)
 764 {
 765     bool processed = FALSE;
 766
 767     switch ( id )
 768     {
 769         case SIZENORMAL:
 770             // only do it it if we were iconized before, otherwise resizing the
 771             // parent frame has a curious side effect of bringing it under it's
 772             // children
 773             if ( !m_iconized )
 774                 break;
 775
 776             // restore all child frames too
 777             IconizeChildFrames(FALSE);
 778
 779             // fall through
 780
 781         case SIZEFULLSCREEN:
 782             m_iconized = FALSE;
 783             break;
 784
 785         case SIZEICONIC:
 786             // iconize all child frames too
 787             IconizeChildFrames(TRUE);
 788
 789             m_iconized = TRUE;
 790             break;
 791     }
 792
 793     if ( !m_iconized )
 794     {
 795         PositionStatusBar();
 796         PositionToolBar();
 797
 798         wxSizeEvent event(wxSize(x, y), m_windowId);
 799         event.SetEventObject( this );
 800         processed = GetEventHandler()->ProcessEvent(event);
 801     }
 802
 803     return processed;
 804 }
 805
 806 bool wxFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND control)
 807 {
 808     if ( control )
 809     {
 810         // In case it's e.g. a toolbar.
 811         wxWindow *win = wxFindWinFromHandle(control);
 812         if ( win )
 813             return win->MSWCommand(cmd, id);
 814     }
 815
 816     // handle here commands from menus and accelerators
 817     if ( cmd == 0 || cmd == 1 )
 818     {
 819         if ( wxCurrentPopupMenu )
 820         {
 821             wxMenu *popupMenu = wxCurrentPopupMenu;
 822             wxCurrentPopupMenu = NULL;
 823
 824             return popupMenu->MSWCommand(cmd, id);
 825         }
 826
 827         if ( ProcessCommand(id) )
 828         {
 829             return TRUE;
 830         }
 831     }
 832
 833     return FALSE;
 834 }
 835
 836 bool wxFrame::HandleMenuSelect(WXWORD nItem, WXWORD flags, WXHMENU hMenu)
 837 {
 838     int item;
 839     if ( flags == 0xFFFF && hMenu == 0 )
 840     {
 841         // menu was removed from screen
 842         item = -1;
 843     }
 844     else if ( !(flags & MF_POPUP) && !(flags & MF_SEPARATOR) )
 845     {
 846         item = nItem;
 847     }
 848     else
 849     {
 850         // don't give hints for separators (doesn't make sense) nor for the
 851         // items opening popup menus (they don't have them anyhow)
 852         return FALSE;
 853     }
 854
 855     wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, item);
 856     event.SetEventObject( this );
 857
 858     return GetEventHandler()->ProcessEvent(event);
 859 }
 860
 861 // ---------------------------------------------------------------------------
 862 // the window proc for wxFrame
 863 // ---------------------------------------------------------------------------
 864
 865 long wxFrame::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 866 {
 867     long rc = 0;
 868     bool processed = FALSE;
 869
 870     switch ( message )
 871     {
 872         case WM_CLOSE:
 873             // if we can't close, tell the system that we processed the
 874             // message - otherwise it would close us
 875             processed = !Close();
 876             break;
 877
 878         case WM_COMMAND:
 879             {
 880                 WORD id, cmd;
 881                 WXHWND hwnd;
 882                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 883                               &id, &hwnd, &cmd);
 884
 885                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 886             }
 887             break;
 888
 889         case WM_MENUSELECT:
 890             {
 891                 WXWORD item, flags;
 892                 WXHMENU hmenu;
 893                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 894
 895                 processed = HandleMenuSelect(item, flags, hmenu);
 896             }
 897             break;
 898
 899         case WM_PAINT:
 900             processed = HandlePaint();
 901             break;
 902
 903         case WM_QUERYDRAGICON:
 904             {
 905                 HICON hIcon = m_icon.Ok() ? GetHiconOf(m_icon)
 906                                           : (HICON)(m_defaultIcon);
 907                 rc = (long)hIcon;
 908                 processed = rc != 0;
 909             }
 910             break;
 911
 912         case WM_SIZE:
 913             processed = HandleSize(LOWORD(lParam), HIWORD(lParam), wParam);
 914             break;
 915     }
 916
 917     if ( !processed )
 918         rc = wxWindow::MSWWindowProc(message, wParam, lParam);
 919
 920     return rc;
 921 }
 922