src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:     MDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "mdi.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     #if wxUSE_STATUSBAR
  39         #include "wx/statusbr.h"
  40     #endif
  41     #include "wx/settings.h"
  42     #include "wx/intl.h"
  43     #include "wx/log.h"
  44 #endif
  45
  46 #include "wx/mdi.h"
  47 #include "wx/msw/private.h"
  48
  49 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  50     #include "wx/msw/statbr95.h"
  51 #endif
  52
  53 #if wxUSE_TOOLBAR
  54     #include "wx/toolbar.h"
  55 #endif // wxUSE_TOOLBAR
  56
  57 #include <string.h>
  58
  59 // ---------------------------------------------------------------------------
  60 // global variables
  61 // ---------------------------------------------------------------------------
  62
  63 extern wxWindowList wxModelessWindows;      // from dialog.cpp
  64 extern wxMenu *wxCurrentPopupMenu;
  65
  66 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  67 extern const wxChar *wxMDIChildFrameClassName;
  68 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  69
  70 extern wxWindow *wxWndHook;                 // from window.cpp
  71
  72 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  73 extern void wxRemoveHandleAssociation(wxWindow *win);
  74
  75 static HWND invalidHandle = 0;
  76
  77 // ---------------------------------------------------------------------------
  78 // constants
  79 // ---------------------------------------------------------------------------
  80
  81 static const int IDM_WINDOWTILE  = 4001;
  82 static const int IDM_WINDOWTILEHOR  = 4001;
  83 static const int IDM_WINDOWCASCADE = 4002;
  84 static const int IDM_WINDOWICONS = 4003;
  85 static const int IDM_WINDOWNEXT = 4004;
  86 static const int IDM_WINDOWTILEVERT = 4005;
  87
  88 // This range gives a maximum of 500 MDI children. Should be enough :-)
  89 static const int wxFIRST_MDI_CHILD = 4100;
  90 static const int wxLAST_MDI_CHILD = 4600;
  91
  92 // Status border dimensions
  93 static const int wxTHICK_LINE_BORDER = 3;
  94 static const int wxTHICK_LINE_WIDTH  = 1;
  95
  96 // ---------------------------------------------------------------------------
  97 // private functions
  98 // ---------------------------------------------------------------------------
  99
 100 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
 101 // of the parent of win (which is supposed to be the MDI client window)
 102 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
 103
 104 // insert the window menu (subMenu) into menu just before "Help" submenu or at
 105 // the very end if not found
 106 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
 107
 108 // Remove the window menu
 109 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 110
 111 // is this an id of an MDI child?
 112 inline bool IsMdiCommandId(int id)
 113 {
 114     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 115 }
 116
 117 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 118                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 119
 120 // ===========================================================================
 121 // implementation
 122 // ===========================================================================
 123
 124 // ---------------------------------------------------------------------------
 125 // wxWin macros
 126 // ---------------------------------------------------------------------------
 127
 128 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 129 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 130 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 131
 132 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 133     EVT_SIZE(wxMDIParentFrame::OnSize)
 134     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 135 END_EVENT_TABLE()
 136
 137 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 138     EVT_IDLE(wxMDIChildFrame::OnIdle)
 139 END_EVENT_TABLE()
 140
 141 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 142     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 143 END_EVENT_TABLE()
 144
 145 // ===========================================================================
 146 // wxMDIParentFrame: the frame which contains the client window which manages
 147 // the children
 148 // ===========================================================================
 149
 150 wxMDIParentFrame::wxMDIParentFrame()
 151 {
 152     m_clientWindow = NULL;
 153     m_currentChild = NULL;
 154     m_windowMenu = (wxMenu*) NULL;
 155     m_parentFrameActive = TRUE;
 156 }
 157
 158 bool wxMDIParentFrame::Create(wxWindow *parent,
 159                               wxWindowID id,
 160                               const wxString& title,
 161                               const wxPoint& pos,
 162                               const wxSize& size,
 163                               long style,
 164                               const wxString& name)
 165 {
 166   m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON : wxDEFAULT_MDIPARENTFRAME_ICON);
 167
 168   m_clientWindow = NULL;
 169   m_currentChild = NULL;
 170
 171   if (style & wxFRAME_NO_WINDOW_MENU)
 172       m_windowMenu = (wxMenu*) NULL;
 173   else
 174   {
 175   // m_windowMenu = (WXHMENU) ::LoadMenu(wxGetInstance(), wxT("wxWindowMenu"));
 176       m_windowMenu = new wxMenu;
 177
 178
 179       m_windowMenu->Append(4002, wxT("&Cascade"));
 180       m_windowMenu->Append(4001, wxT("Tile &Horizontally"));
 181       m_windowMenu->Append(4005, wxT("Tile &Vertically"));
 182       m_windowMenu->AppendSeparator();
 183       m_windowMenu->Append(4003, wxT("&Arrange Icons"));
 184       m_windowMenu->Append(4004, wxT("&Next"));
 185   }
 186
 187   m_parentFrameActive = TRUE;
 188
 189   if (!parent)
 190     wxTopLevelWindows.Append(this);
 191
 192   SetName(name);
 193   m_windowStyle = style;
 194
 195   if (parent) parent->AddChild(this);
 196
 197   if ( id > -1 )
 198     m_windowId = id;
 199   else
 200     m_windowId = (int)NewControlId();
 201
 202   int x = pos.x;
 203   int y = pos.y;
 204   int width = size.x;
 205   int height = size.y;
 206
 207   DWORD msflags = WS_OVERLAPPED;
 208   if (style & wxMINIMIZE_BOX)
 209     msflags |= WS_MINIMIZEBOX;
 210   if (style & wxMAXIMIZE_BOX)
 211     msflags |= WS_MAXIMIZEBOX;
 212   if (style & wxTHICK_FRAME)
 213     msflags |= WS_THICKFRAME;
 214   if (style & wxSYSTEM_MENU)
 215     msflags |= WS_SYSMENU;
 216   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 217     msflags |= WS_MINIMIZE;
 218   if (style & wxMAXIMIZE)
 219     msflags |= WS_MAXIMIZE;
 220   if (style & wxCAPTION)
 221     msflags |= WS_CAPTION;
 222
 223   if (style & wxCLIP_CHILDREN)
 224     msflags |= WS_CLIPCHILDREN;
 225
 226   if ( !wxWindow::MSWCreate(m_windowId,
 227                             parent,
 228                             wxMDIFrameClassName,
 229                             this,
 230                             title,
 231                             x, y, width, height,
 232                             msflags) )
 233   {
 234       return FALSE;
 235   }
 236
 237   wxModelessWindows.Append(this);
 238
 239   // unlike (almost?) all other windows, frames are created hidden
 240   m_isShown = FALSE;
 241
 242   return TRUE;
 243 }
 244
 245 wxMDIParentFrame::~wxMDIParentFrame()
 246 {
 247     DestroyChildren();
 248     // already delete by DestroyChildren()
 249     m_frameToolBar = NULL;
 250     m_frameStatusBar = NULL;
 251
 252     // ::DestroyMenu((HMENU)m_windowMenu);
 253     if (m_windowMenu)
 254     {
 255         delete m_windowMenu;
 256         m_windowMenu = (wxMenu*) NULL;
 257     }
 258
 259     if ( m_clientWindow )
 260     {
 261         if ( m_clientWindow->MSWGetOldWndProc() )
 262             m_clientWindow->UnsubclassWin();
 263
 264         m_clientWindow->SetHWND(0);
 265         delete m_clientWindow;
 266     }
 267 }
 268
 269 void wxMDIParentFrame::InternalSetMenuBar()
 270 {
 271 //    HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
 272
 273     m_parentFrameActive = TRUE;
 274
 275     HMENU subMenu = (HMENU) 0;
 276     if (GetWindowMenu())
 277         subMenu = (HMENU) GetWindowMenu()->GetHMenu();
 278
 279     InsertWindowMenu(GetClientWindow(), m_hMenu, subMenu);
 280 }
 281
 282 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 283 {
 284     if (m_windowMenu)
 285     {
 286         if (GetMenuBar())
 287         {
 288             // Remove old window menu
 289             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 290         }
 291
 292         delete m_windowMenu;
 293         m_windowMenu = (wxMenu*) NULL;
 294     }
 295     if (menu)
 296     {
 297         m_windowMenu = menu;
 298         if (GetMenuBar())
 299             InsertWindowMenu(GetClientWindow(), m_hMenu, (HMENU) m_windowMenu->GetHMenu());
 300     }
 301 }
 302
 303 void wxMDIParentFrame::OnSize(wxSizeEvent& event)
 304 {
 305     if ( GetClientWindow() )
 306     {
 307         int width, height;
 308         GetClientSize(&width, &height);
 309
 310         GetClientWindow()->SetSize(0, 0, width, height);
 311     }
 312 }
 313
 314 // Returns the active MDI child window
 315 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 316 {
 317     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 318                                     WM_MDIGETACTIVE, 0, 0L);
 319     if ( hWnd == 0 )
 320         return NULL;
 321     else
 322         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 323 }
 324
 325 // Create the client window class (don't Create the window, just return a new
 326 // class)
 327 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 328 {
 329     return new wxMDIClientWindow;
 330 }
 331
 332 // Responds to colour changes, and passes event on to children.
 333 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 334 {
 335     if ( m_clientWindow )
 336     {
 337         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 338         m_clientWindow->Refresh();
 339     }
 340
 341     event.Skip();
 342 }
 343
 344 // ---------------------------------------------------------------------------
 345 // MDI operations
 346 // ---------------------------------------------------------------------------
 347
 348 void wxMDIParentFrame::Cascade()
 349 {
 350     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 351 }
 352
 353 // TODO: add a direction argument (hor/vert)
 354 void wxMDIParentFrame::Tile()
 355 {
 356     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 357 }
 358
 359 void wxMDIParentFrame::ArrangeIcons()
 360 {
 361     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 362 }
 363
 364 void wxMDIParentFrame::ActivateNext()
 365 {
 366     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 367 }
 368
 369 void wxMDIParentFrame::ActivatePrevious()
 370 {
 371     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 372 }
 373
 374 // ---------------------------------------------------------------------------
 375 // the MDI parent frame window proc
 376 // ---------------------------------------------------------------------------
 377
 378 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 379                                      WXWPARAM wParam,
 380                                      WXLPARAM lParam)
 381 {
 382     long rc = 0;
 383     bool processed = FALSE;
 384
 385     switch ( message )
 386     {
 387         case WM_ACTIVATE:
 388             {
 389                 WXWORD state, minimized;
 390                 WXHWND hwnd;
 391                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 392
 393                 processed = HandleActivate(state, minimized != 0, hwnd);
 394             }
 395             break;
 396
 397         case WM_COMMAND:
 398             {
 399                 WXWORD id, cmd;
 400                 WXHWND hwnd;
 401                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 402
 403                 (void)HandleCommand(id, cmd, hwnd);
 404
 405                 // even if the frame didn't process it, there is no need to try it
 406                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 407                 // so pretend we processed the message anyhow
 408                 processed = TRUE;
 409             }
 410
 411             // always pass this message DefFrameProc(), otherwise MDI menu
 412             // commands (and sys commands - more surprizingly!) won't work
 413             MSWDefWindowProc(message, wParam, lParam);
 414             break;
 415
 416         case WM_CREATE:
 417             m_clientWindow = OnCreateClient();
 418             // Uses own style for client style
 419             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 420             {
 421                 wxLogMessage(_("Failed to create MDI parent frame."));
 422
 423                 rc = -1;
 424             }
 425
 426             processed = TRUE;
 427             break;
 428
 429         case WM_ERASEBKGND:
 430             processed = TRUE;
 431
 432             // we erase background ourselves
 433             rc = TRUE;
 434             break;
 435
 436         case WM_MENUSELECT:
 437             {
 438                 WXWORD item, flags;
 439                 WXHMENU hmenu;
 440                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 441
 442                 if ( m_parentFrameActive )
 443                 {
 444                     processed = HandleMenuSelect(item, flags, hmenu);
 445                 }
 446                 else if (m_currentChild)
 447                 {
 448                     processed = m_currentChild->
 449                         HandleMenuSelect(item, flags, hmenu);
 450                 }
 451             }
 452             break;
 453
 454         case WM_SIZE:
 455             // as we don't (usually) resize the MDI client to exactly fit the
 456             // client area (we put it below the toolbar, above statusbar &c),
 457             // we should not pass this one to DefFrameProc
 458             break;
 459     }
 460
 461     if ( !processed )
 462         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 463
 464     return rc;
 465 }
 466
 467 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 468 {
 469     bool processed = FALSE;
 470
 471     if ( wxWindow::HandleActivate(state, minimized, activate) )
 472     {
 473         // already processed
 474         processed = TRUE;
 475     }
 476
 477     // If this window is an MDI parent, we must also send an OnActivate message
 478     // to the current child.
 479     if ( (m_currentChild != NULL) &&
 480          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 481     {
 482         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 483         event.SetEventObject( m_currentChild );
 484         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 485             processed = TRUE;
 486     }
 487
 488     return processed;
 489 }
 490
 491 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 492 {
 493     // In case it's e.g. a toolbar.
 494     if ( hwnd )
 495     {
 496         wxWindow *win = wxFindWinFromHandle(hwnd);
 497         if ( win )
 498             return win->MSWCommand(cmd, id);
 499     }
 500
 501     // is it one of standard MDI commands?
 502     WXWPARAM wParam = 0;
 503     int msg;
 504     switch ( id )
 505     {
 506         case IDM_WINDOWCASCADE:
 507             msg = WM_MDICASCADE;
 508             wParam = MDITILE_SKIPDISABLED;
 509             break;
 510
 511         case IDM_WINDOWTILEHOR:
 512             wParam |= MDITILE_HORIZONTAL;
 513             // fall through
 514
 515         case IDM_WINDOWTILEVERT:
 516             if ( !wParam )
 517                 wParam = MDITILE_VERTICAL;
 518             msg = WM_MDITILE;
 519             wParam |= MDITILE_SKIPDISABLED;
 520             break;
 521
 522         case IDM_WINDOWICONS:
 523             msg = WM_MDIICONARRANGE;
 524             break;
 525
 526         case IDM_WINDOWNEXT:
 527             msg = WM_MDINEXT;
 528             break;
 529
 530         default:
 531             msg = 0;
 532     }
 533
 534     if ( msg )
 535     {
 536         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, 0);
 537
 538         return TRUE;
 539     }
 540
 541     // FIXME VZ: what does this test do??
 542     if (id >= 0xF000)
 543     {
 544         return FALSE; // Get WndProc to call default proc
 545     }
 546
 547     if ( IsMdiCommandId(id) )
 548     {
 549         wxWindowList::Node* node = GetChildren().GetFirst();
 550         while ( node )
 551         {
 552             wxWindow* child = node->GetData();
 553             if ( child->GetHWND() )
 554             {
 555                 long childId = wxGetWindowId(child->GetHWND());
 556                 if (childId == (long)id)
 557                 {
 558                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 559                                    WM_MDIACTIVATE,
 560                                    (WPARAM)child->GetHWND(), 0);
 561                     return TRUE;
 562                 }
 563             }
 564             node = node->GetNext();
 565         }
 566     }
 567     else if ( m_parentFrameActive )
 568     {
 569         return ProcessCommand(id);
 570     }
 571     else if ( m_currentChild )
 572     {
 573         return m_currentChild->HandleCommand(id, cmd, hwnd);
 574     }
 575     else
 576     {
 577         // this shouldn't happen because it means that our messages are being
 578         // lost (they're not sent to the parent frame nor to the children)
 579         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 580     }
 581
 582     return FALSE;
 583 }
 584
 585 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 586                                         WXWPARAM wParam,
 587                                         WXLPARAM lParam)
 588 {
 589     WXHWND clientWnd;
 590     if ( GetClientWindow() )
 591         clientWnd = GetClientWindow()->GetHWND();
 592     else
 593         clientWnd = 0;
 594
 595     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 596 }
 597
 598 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 599 {
 600     MSG *pMsg = (MSG *)msg;
 601
 602     // first let the current child get it
 603     if ( m_currentChild && m_currentChild->GetHWND() &&
 604          m_currentChild->MSWTranslateMessage(msg) )
 605     {
 606         return TRUE;
 607     }
 608
 609     // then try out accel table (will also check the menu accels)
 610     if ( wxFrame::MSWTranslateMessage(msg) )
 611     {
 612         return TRUE;
 613     }
 614
 615     // finally, check for MDI specific built in accel keys
 616     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 617     {
 618         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 619             return TRUE;
 620     }
 621
 622     return FALSE;
 623 }
 624
 625 // ===========================================================================
 626 // wxMDIChildFrame
 627 // ===========================================================================
 628
 629 void wxMDIChildFrame::Init()
 630 {
 631     m_needsResize = TRUE;
 632 }
 633
 634 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 635                              wxWindowID id,
 636                              const wxString& title,
 637                              const wxPoint& pos,
 638                              const wxSize& size,
 639                              long style,
 640                              const wxString& name)
 641 {
 642   m_defaultIcon = (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 643                                                      : wxDEFAULT_MDICHILDFRAME_ICON);
 644
 645   SetName(name);
 646
 647   if ( id > -1 )
 648     m_windowId = id;
 649   else
 650     m_windowId = (int)NewControlId();
 651
 652   if ( parent )
 653   {
 654       parent->AddChild(this);
 655   }
 656
 657   wxWndHook = this;
 658
 659   int x = pos.x;
 660   int y = pos.y;
 661   int width = size.x;
 662   int height = size.y;
 663
 664   MDICREATESTRUCT mcs;
 665
 666   mcs.szClass = style & wxNO_FULL_REPAINT_ON_RESIZE
 667                     ? wxMDIChildFrameClassNameNoRedraw
 668                     : wxMDIChildFrameClassName;
 669   mcs.szTitle = title;
 670   mcs.hOwner = wxGetInstance();
 671   if (x > -1)
 672       mcs.x = x;
 673   else
 674       mcs.x = CW_USEDEFAULT;
 675
 676   if (y > -1)
 677       mcs.y = y;
 678   else
 679       mcs.y = CW_USEDEFAULT;
 680
 681   if (width > -1)
 682       mcs.cx = width;
 683   else
 684       mcs.cx = CW_USEDEFAULT;
 685
 686   if (height > -1)
 687       mcs.cy = height;
 688   else
 689       mcs.cy = CW_USEDEFAULT;
 690
 691   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 692   if (style & wxMINIMIZE_BOX)
 693     msflags |= WS_MINIMIZEBOX;
 694   if (style & wxMAXIMIZE_BOX)
 695     msflags |= WS_MAXIMIZEBOX;
 696   if (style & wxTHICK_FRAME)
 697     msflags |= WS_THICKFRAME;
 698   if (style & wxSYSTEM_MENU)
 699     msflags |= WS_SYSMENU;
 700   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 701     msflags |= WS_MINIMIZE;
 702   if (style & wxMAXIMIZE)
 703     msflags |= WS_MAXIMIZE;
 704   if (style & wxCAPTION)
 705     msflags |= WS_CAPTION;
 706
 707   mcs.style = msflags;
 708
 709   mcs.lParam = 0;
 710
 711   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 712                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 713
 714   wxWndHook = NULL;
 715   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 716
 717   // VZ: what's this? an act of piracy?
 718   //SetWindowLong(GetHwnd(), 0, (long)this);
 719
 720   wxModelessWindows.Append(this);
 721   return TRUE;
 722 }
 723
 724 wxMDIChildFrame::~wxMDIChildFrame()
 725 {
 726     DestroyChildren();
 727
 728     // already delete by DestroyChildren()
 729     m_frameToolBar = NULL;
 730     m_frameStatusBar = NULL;
 731
 732     MSWDestroyWindow();
 733 }
 734
 735 // Set the client size (i.e. leave the calculation of borders etc.
 736 // to wxWindows)
 737 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 738 {
 739   HWND hWnd = GetHwnd();
 740
 741   RECT rect;
 742   ::GetClientRect(hWnd, &rect);
 743
 744   RECT rect2;
 745   GetWindowRect(hWnd, &rect2);
 746
 747   // Find the difference between the entire window (title bar and all)
 748   // and the client area; add this to the new client size to move the
 749   // window
 750   int actual_width = rect2.right - rect2.left - rect.right + width;
 751   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 752
 753   if (GetStatusBar() && GetStatusBar()->IsShown())
 754   {
 755     int sx, sy;
 756     GetStatusBar()->GetSize(&sx, &sy);
 757     actual_height += sy;
 758   }
 759
 760   POINT point;
 761   point.x = rect2.left;
 762   point.y = rect2.top;
 763
 764   // If there's an MDI parent, must subtract the parent's top left corner
 765   // since MoveWindow moves relative to the parent
 766   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 767   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 768
 769   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 770
 771   wxSizeEvent event(wxSize(width, height), m_windowId);
 772   event.SetEventObject( this );
 773   GetEventHandler()->ProcessEvent(event);
 774 }
 775
 776 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 777 {
 778   RECT rect;
 779   GetWindowRect(GetHwnd(), &rect);
 780   POINT point;
 781   point.x = rect.left;
 782   point.y = rect.top;
 783
 784   // Since we now have the absolute screen coords,
 785   // if there's a parent we must subtract its top left corner
 786   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 787   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 788
 789   *x = point.x;
 790   *y = point.y;
 791 }
 792
 793 void wxMDIChildFrame::InternalSetMenuBar()
 794 {
 795     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 796
 797     // HMENU subMenu = GetSubMenu((HMENU)parent->GetWindowMenu(), 0);
 798     HMENU subMenu = (HMENU) 0;
 799     if (parent->GetWindowMenu())
 800         subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 801
 802     InsertWindowMenu(parent->GetClientWindow(), m_hMenu, subMenu);
 803
 804     parent->m_parentFrameActive = FALSE;
 805 }
 806
 807 // ---------------------------------------------------------------------------
 808 // MDI operations
 809 // ---------------------------------------------------------------------------
 810
 811 void wxMDIChildFrame::Maximize(bool maximize)
 812 {
 813     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 814     if ( parent && parent->GetClientWindow() )
 815     {
 816         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 817                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 818                       (WPARAM)GetHwnd(), 0);
 819     }
 820 }
 821
 822 void wxMDIChildFrame::Restore()
 823 {
 824     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 825     if ( parent && parent->GetClientWindow() )
 826     {
 827         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 828                       (WPARAM) GetHwnd(), 0);
 829     }
 830 }
 831
 832 void wxMDIChildFrame::Activate()
 833 {
 834     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 835     if ( parent && parent->GetClientWindow() )
 836     {
 837         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 838                       (WPARAM) GetHwnd(), 0);
 839     }
 840 }
 841
 842 // ---------------------------------------------------------------------------
 843 // MDI window proc and message handlers
 844 // ---------------------------------------------------------------------------
 845
 846 long wxMDIChildFrame::MSWWindowProc(WXUINT message,
 847                                     WXWPARAM wParam,
 848                                     WXLPARAM lParam)
 849 {
 850     long rc = 0;
 851     bool processed = FALSE;
 852
 853     switch ( message )
 854     {
 855         case WM_COMMAND:
 856             {
 857                 WORD id, cmd;
 858                 WXHWND hwnd;
 859                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 860                               &id, &hwnd, &cmd);
 861
 862                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 863             }
 864             break;
 865
 866         case WM_GETMINMAXINFO:
 867             // let the default window proc calculate the size of MDI children
 868             // frames because it is based on the size of the MDI client window,
 869             // not on the values specified in wxWindow m_min/max variables
 870             return MSWDefWindowProc(message, wParam, lParam);
 871
 872         case WM_MDIACTIVATE:
 873             {
 874                 WXWORD act;
 875                 WXHWND hwndAct, hwndDeact;
 876                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 877
 878                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 879             }
 880             // fall through
 881
 882         case WM_MOVE:
 883             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 884             // scrollbars if necessary
 885
 886             // fall through
 887
 888         case WM_SIZE:
 889             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 890             // things happen
 891             MSWDefWindowProc(message, wParam, lParam);
 892             break;
 893
 894         case WM_SYSCOMMAND:
 895             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 896             // the message (the base class version does not)
 897             return MSWDefWindowProc(message, wParam, lParam);
 898
 899         case WM_WINDOWPOSCHANGING:
 900             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 901             break;
 902     }
 903
 904     if ( !processed )
 905         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 906
 907     return rc;
 908 }
 909
 910 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 911 {
 912     // In case it's e.g. a toolbar.
 913     if ( hwnd )
 914     {
 915         wxWindow *win = wxFindWinFromHandle(hwnd);
 916         if (win)
 917             return win->MSWCommand(cmd, id);
 918     }
 919
 920     if (wxCurrentPopupMenu)
 921     {
 922         wxMenu *popupMenu = wxCurrentPopupMenu;
 923         wxCurrentPopupMenu = NULL;
 924         if (popupMenu->MSWCommand(cmd, id))
 925             return TRUE;
 926     }
 927
 928     bool processed;
 929     if (GetMenuBar() && GetMenuBar()->FindItem(id))
 930     {
 931         processed = ProcessCommand(id);
 932     }
 933     else
 934     {
 935         processed = FALSE;
 936     }
 937
 938     return processed;
 939 }
 940
 941 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
 942                                         WXHWND hwndAct,
 943                                         WXHWND hwndDeact)
 944 {
 945     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 946
 947     HMENU menuToSet = 0;
 948
 949     bool activated;
 950
 951     if ( m_hWnd == hwndAct )
 952     {
 953         activated = TRUE;
 954         parent->m_currentChild = this;
 955
 956         HMENU child_menu = (HMENU)GetWinMenu();
 957         if ( child_menu )
 958         {
 959             parent->m_parentFrameActive = FALSE;
 960
 961             menuToSet = child_menu;
 962         }
 963     }
 964     else if ( m_hWnd == hwndDeact )
 965     {
 966         wxASSERT_MSG( parent->m_currentChild == this,
 967                       wxT("can't deactivate MDI child which wasn't active!") );
 968
 969         activated = FALSE;
 970         parent->m_currentChild = NULL;
 971
 972         HMENU parent_menu = (HMENU)parent->GetWinMenu();
 973         if ( parent_menu )
 974         {
 975             parent->m_parentFrameActive = TRUE;
 976
 977             menuToSet = parent_menu;
 978         }
 979     }
 980     else
 981     {
 982         // we have nothing to do with it
 983         return FALSE;
 984     }
 985
 986     if ( menuToSet )
 987     {
 988         HMENU subMenu = (HMENU) 0;
 989         if (parent->GetWindowMenu())
 990             subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 991
 992         MDISetMenu(parent->GetClientWindow(), menuToSet, subMenu);
 993     }
 994
 995     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
 996     event.SetEventObject( this );
 997
 998     return GetEventHandler()->ProcessEvent(event);
 999 }
1000
1001 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1002 {
1003     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1004 #if defined(__WIN95__)
1005     if (!(lpPos->flags & SWP_NOSIZE))
1006     {
1007         RECT rectClient;
1008         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1009         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1010         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1011         {
1012             ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1013             lpPos->x = rectClient.left;
1014             lpPos->y = rectClient.top;
1015             lpPos->cx = rectClient.right - rectClient.left;
1016             lpPos->cy = rectClient.bottom - rectClient.top;
1017         }
1018         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1019         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1020         {
1021             pFrameWnd->GetToolBar()->Refresh();
1022         }
1023     }
1024 #endif // Win95
1025
1026     return FALSE;
1027 }
1028
1029 // ---------------------------------------------------------------------------
1030 // MDI specific message translation/preprocessing
1031 // ---------------------------------------------------------------------------
1032
1033 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
1034 {
1035     return DefMDIChildProc(GetHwnd(),
1036                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1037 }
1038
1039 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1040 {
1041     return m_acceleratorTable.Translate(GetParent(), msg);
1042 }
1043
1044 // ---------------------------------------------------------------------------
1045 // misc
1046 // ---------------------------------------------------------------------------
1047
1048 void wxMDIChildFrame::MSWDestroyWindow()
1049 {
1050     MSWDetachWindowMenu();
1051     invalidHandle = GetHwnd();
1052
1053     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1054
1055     // Must make sure this handle is invalidated (set to NULL) since all sorts
1056     // of things could happen after the child client is destroyed, but before
1057     // the wxFrame is destroyed.
1058
1059     HWND oldHandle = (HWND)GetHWND();
1060     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1061                 (WPARAM)oldHandle, 0);
1062
1063     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1064         ResetWindowStyle((void*) NULL);
1065
1066     invalidHandle = 0;
1067
1068     if (m_hMenu)
1069     {
1070         ::DestroyMenu((HMENU) m_hMenu);
1071         m_hMenu = 0;
1072     }
1073     wxRemoveHandleAssociation(this);
1074     m_hWnd = 0;
1075 }
1076
1077 // Change the client window's extended style so we don't get a client edge
1078 // style when a child is maximised (a double border looks silly.)
1079 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1080 {
1081 #if defined(__WIN95__)
1082     RECT *rect = (RECT *)vrect;
1083     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1084     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1085     if (!pChild || (pChild == this))
1086     {
1087         DWORD dwStyle = ::GetWindowLong(GetWinHwnd(pFrameWnd->GetClientWindow()), GWL_EXSTYLE);
1088         DWORD dwThisStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1089         DWORD dwNewStyle = dwStyle;
1090         if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1091             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1092         else
1093             dwNewStyle |= WS_EX_CLIENTEDGE;
1094
1095         if (dwStyle != dwNewStyle)
1096         {
1097             HWND hwnd = GetWinHwnd(pFrameWnd->GetClientWindow());
1098             ::RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1099             ::SetWindowLong(hwnd, GWL_EXSTYLE, dwNewStyle);
1100             ::SetWindowPos(hwnd, NULL, 0, 0, 0, 0,
1101                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1102                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1103                            SWP_NOCOPYBITS);
1104             if (rect)
1105                 ::GetClientRect(hwnd, rect);
1106
1107             return TRUE;
1108         }
1109     }
1110 #endif // Win95
1111
1112     return FALSE;
1113 }
1114
1115 // ===========================================================================
1116 // wxMDIClientWindow: the window of predefined (by Windows) class which
1117 // contains the child frames
1118 // ===========================================================================
1119
1120 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1121 {
1122     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1123
1124     CLIENTCREATESTRUCT ccs;
1125     m_windowStyle = style;
1126     m_parent = parent;
1127
1128     ccs.hWindowMenu = (HMENU) 0;
1129     if (parent->GetWindowMenu())
1130         ccs.hWindowMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
1131     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1132
1133     DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN;
1134     if ( style & wxHSCROLL )
1135         msStyle |= WS_HSCROLL;
1136     if ( style & wxVSCROLL )
1137         msStyle |= WS_VSCROLL;
1138
1139 #if defined(__WIN95__)
1140     DWORD exStyle = WS_EX_CLIENTEDGE;
1141 #else
1142     DWORD exStyle = 0;
1143 #endif
1144
1145     wxWndHook = this;
1146     m_hWnd = (WXHWND)::CreateWindowEx
1147                        (
1148                         exStyle,
1149                         wxT("MDICLIENT"),
1150                         NULL,
1151                         msStyle,
1152                         0, 0, 0, 0,
1153                         GetWinHwnd(parent),
1154                         NULL,
1155                         wxGetInstance(),
1156                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1157     if ( !m_hWnd )
1158     {
1159         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1160
1161         return FALSE;
1162     }
1163
1164     SubclassWin(m_hWnd);
1165     wxWndHook = NULL;
1166
1167     return TRUE;
1168 }
1169
1170 // Explicitly call default scroll behaviour
1171 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1172 {
1173     // Note: for client windows, the scroll position is not set in
1174     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1175     // scroll position we're at.
1176     // This makes it hard to paint patterns or bitmaps in the background,
1177     // and have the client area scrollable as well.
1178
1179     if ( event.GetOrientation() == wxHORIZONTAL )
1180         m_scrollX = event.GetPosition(); // Always returns zero!
1181     else
1182         m_scrollY = event.GetPosition(); // Always returns zero!
1183
1184     event.Skip();
1185 }
1186
1187 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1188 {
1189     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1190     // client area, you can end up with a non-refreshed portion in the client window
1191     // (see OGL studio sample). So check if the position is changed and if so,
1192     // redraw the MDI child frames.
1193
1194     wxPoint oldPos = GetPosition();
1195
1196     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
1197
1198     wxPoint newPos = GetPosition();
1199
1200     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1201     {
1202         if (GetParent())
1203         {
1204             wxNode* node = GetParent()->GetChildren().First();
1205             while (node)
1206             {
1207                 wxWindow* child = (wxWindow*) node->Data();
1208                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1209                 {
1210                     HWND hWnd = (HWND) child->GetHWND();
1211                    ::RedrawWindow(hWnd, NULL, NULL, RDW_FRAME|RDW_ALLCHILDREN|RDW_INVALIDATE );
1212                 }
1213                 node = node->Next();
1214             }
1215         }
1216     }
1217 }
1218
1219 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1220 {
1221     // MDI child frames get their WM_SIZE when they're constructed but at this
1222     // moment they don't have any children yet so all child windows will be
1223     // positioned incorrectly when they are added later - to fix this, we
1224     // generate an artificial size event here
1225     if ( m_needsResize )
1226     {
1227         m_needsResize = FALSE; // avoid any possibility of recursion
1228
1229         SendSizeEvent();
1230     }
1231
1232     event.Skip();
1233 }
1234
1235 // ---------------------------------------------------------------------------
1236 // non member functions
1237 // ---------------------------------------------------------------------------
1238
1239 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1240 {
1241     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1242 #ifdef __WIN32__
1243                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1244 #else
1245                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1246 #endif
1247                  );
1248
1249     // update menu bar of the parent window
1250     wxWindow *parent = win->GetParent();
1251     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1252
1253     ::DrawMenuBar(GetWinHwnd(parent));
1254 }
1255
1256 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1257 {
1258     // Try to insert Window menu in front of Help, otherwise append it.
1259     HMENU hmenu = (HMENU)menu;
1260
1261     if (subMenu)
1262     {
1263     int N = GetMenuItemCount(hmenu);
1264     bool success = FALSE;
1265     for ( int i = 0; i < N; i++ )
1266     {
1267         wxChar buf[256];
1268         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1269         if ( chars == 0 )
1270         {
1271             wxLogLastError(wxT("GetMenuString"));
1272
1273             continue;
1274         }
1275
1276         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Help")) )
1277         {
1278             success = TRUE;
1279             ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1280                          (UINT)subMenu, _("&Window"));
1281             break;
1282         }
1283     }
1284
1285     if ( !success )
1286     {
1287         ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1288     }
1289     }
1290
1291     MDISetMenu(win, hmenu, subMenu);
1292 }
1293
1294 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1295 {
1296     // Try to insert Window menu in front of Help, otherwise append it.
1297     HMENU hmenu = (HMENU)menu;
1298     int N = GetMenuItemCount(hmenu);
1299     bool success = FALSE;
1300     for ( int i = 0; i < N; i++ )
1301     {
1302         wxChar buf[256];
1303         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1304         if ( chars == 0 )
1305         {
1306             wxLogLastError(wxT("GetMenuString"));
1307
1308             continue;
1309         }
1310
1311         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Window")) )
1312         {
1313             success = TRUE;
1314             ::RemoveMenu(hmenu, i, MF_BYPOSITION);
1315             break;
1316         }
1317     }
1318
1319     // Does passing 0 for the window menu really work with WM_MDISETMENU?
1320     MDISetMenu(win, hmenu, 0);
1321 }
1322
1323 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1324                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1325 {
1326 #ifdef __WIN32__
1327     *activate = TRUE;
1328     *hwndAct = (WXHWND)lParam;
1329     *hwndDeact = (WXHWND)wParam;
1330 #else // Win16
1331     *activate = (WXWORD)wParam;
1332     *hwndAct = (WXHWND)LOWORD(lParam);
1333     *hwndDeact = (WXHWND)HIWORD(lParam);
1334 #endif // Win32/Win16
1335 }