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
 167                                 ? wxSTD_MDIPARENTFRAME_ICON
 168                                 : wxDEFAULT_MDIPARENTFRAME_ICON);
 169
 170   m_clientWindow = NULL;
 171   m_currentChild = NULL;
 172
 173   // this style can be used to prevent a window from having the standard MDI
 174   // "Window" menu
 175   if ( style & wxFRAME_NO_WINDOW_MENU )
 176   {
 177       m_windowMenu = (wxMenu *)NULL;
 178   }
 179   else // normal case: we have the window menu, so construct it
 180   {
 181       m_windowMenu = new wxMenu;
 182
 183       m_windowMenu->Append(IDM_WINDOWCASCADE, wxT("&Cascade"));
 184       m_windowMenu->Append(IDM_WINDOWTILEHOR, wxT("Tile &Horizontally"));
 185       m_windowMenu->Append(IDM_WINDOWTILEVERT, wxT("Tile &Vertically"));
 186       m_windowMenu->AppendSeparator();
 187       m_windowMenu->Append(IDM_WINDOWICONS, wxT("&Arrange Icons"));
 188       m_windowMenu->Append(IDM_WINDOWNEXT, wxT("&Next"));
 189   }
 190
 191   m_parentFrameActive = TRUE;
 192
 193   if (!parent)
 194     wxTopLevelWindows.Append(this);
 195
 196   SetName(name);
 197   m_windowStyle = style;
 198
 199   if (parent) parent->AddChild(this);
 200
 201   if ( id > -1 )
 202     m_windowId = id;
 203   else
 204     m_windowId = (int)NewControlId();
 205
 206   int x = pos.x;
 207   int y = pos.y;
 208   int width = size.x;
 209   int height = size.y;
 210
 211   DWORD msflags = WS_OVERLAPPED;
 212   if (style & wxMINIMIZE_BOX)
 213     msflags |= WS_MINIMIZEBOX;
 214   if (style & wxMAXIMIZE_BOX)
 215     msflags |= WS_MAXIMIZEBOX;
 216   if (style & wxTHICK_FRAME)
 217     msflags |= WS_THICKFRAME;
 218   if (style & wxSYSTEM_MENU)
 219     msflags |= WS_SYSMENU;
 220   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 221     msflags |= WS_MINIMIZE;
 222   if (style & wxMAXIMIZE)
 223     msflags |= WS_MAXIMIZE;
 224   if (style & wxCAPTION)
 225     msflags |= WS_CAPTION;
 226
 227   if (style & wxCLIP_CHILDREN)
 228     msflags |= WS_CLIPCHILDREN;
 229
 230   if ( !wxWindow::MSWCreate(m_windowId,
 231                             parent,
 232                             wxMDIFrameClassName,
 233                             this,
 234                             title,
 235                             x, y, width, height,
 236                             msflags) )
 237   {
 238       return FALSE;
 239   }
 240
 241   wxModelessWindows.Append(this);
 242
 243   // unlike (almost?) all other windows, frames are created hidden
 244   m_isShown = FALSE;
 245
 246   return TRUE;
 247 }
 248
 249 wxMDIParentFrame::~wxMDIParentFrame()
 250 {
 251     DestroyChildren();
 252     // already delete by DestroyChildren()
 253     m_frameToolBar = NULL;
 254     m_frameStatusBar = NULL;
 255
 256     // ::DestroyMenu((HMENU)m_windowMenu);
 257     if (m_windowMenu)
 258     {
 259         delete m_windowMenu;
 260         m_windowMenu = (wxMenu*) NULL;
 261     }
 262
 263     if ( m_clientWindow )
 264     {
 265         if ( m_clientWindow->MSWGetOldWndProc() )
 266             m_clientWindow->UnsubclassWin();
 267
 268         m_clientWindow->SetHWND(0);
 269         delete m_clientWindow;
 270     }
 271 }
 272
 273 void wxMDIParentFrame::InternalSetMenuBar()
 274 {
 275 //    HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
 276
 277     m_parentFrameActive = TRUE;
 278
 279     HMENU subMenu = (HMENU) 0;
 280     if (GetWindowMenu())
 281         subMenu = (HMENU) GetWindowMenu()->GetHMenu();
 282
 283     InsertWindowMenu(GetClientWindow(), m_hMenu, subMenu);
 284 }
 285
 286 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 287 {
 288     if (m_windowMenu)
 289     {
 290         if (GetMenuBar())
 291         {
 292             // Remove old window menu
 293             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 294         }
 295
 296         delete m_windowMenu;
 297         m_windowMenu = (wxMenu*) NULL;
 298     }
 299     if (menu)
 300     {
 301         m_windowMenu = menu;
 302         if (GetMenuBar())
 303             InsertWindowMenu(GetClientWindow(), m_hMenu, (HMENU) m_windowMenu->GetHMenu());
 304     }
 305 }
 306
 307 void wxMDIParentFrame::OnSize(wxSizeEvent& event)
 308 {
 309     if ( GetClientWindow() )
 310     {
 311         int width, height;
 312         GetClientSize(&width, &height);
 313
 314         GetClientWindow()->SetSize(0, 0, width, height);
 315     }
 316 }
 317
 318 // Returns the active MDI child window
 319 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 320 {
 321     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 322                                     WM_MDIGETACTIVE, 0, 0L);
 323     if ( hWnd == 0 )
 324         return NULL;
 325     else
 326         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 327 }
 328
 329 // Create the client window class (don't Create the window, just return a new
 330 // class)
 331 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 332 {
 333     return new wxMDIClientWindow;
 334 }
 335
 336 // Responds to colour changes, and passes event on to children.
 337 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 338 {
 339     if ( m_clientWindow )
 340     {
 341         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 342         m_clientWindow->Refresh();
 343     }
 344
 345     event.Skip();
 346 }
 347
 348 // ---------------------------------------------------------------------------
 349 // MDI operations
 350 // ---------------------------------------------------------------------------
 351
 352 void wxMDIParentFrame::Cascade()
 353 {
 354     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 355 }
 356
 357 // TODO: add a direction argument (hor/vert)
 358 void wxMDIParentFrame::Tile()
 359 {
 360     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 361 }
 362
 363 void wxMDIParentFrame::ArrangeIcons()
 364 {
 365     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 366 }
 367
 368 void wxMDIParentFrame::ActivateNext()
 369 {
 370     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 371 }
 372
 373 void wxMDIParentFrame::ActivatePrevious()
 374 {
 375     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 376 }
 377
 378 // ---------------------------------------------------------------------------
 379 // the MDI parent frame window proc
 380 // ---------------------------------------------------------------------------
 381
 382 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 383                                      WXWPARAM wParam,
 384                                      WXLPARAM lParam)
 385 {
 386     long rc = 0;
 387     bool processed = FALSE;
 388
 389     switch ( message )
 390     {
 391         case WM_ACTIVATE:
 392             {
 393                 WXWORD state, minimized;
 394                 WXHWND hwnd;
 395                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 396
 397                 processed = HandleActivate(state, minimized != 0, hwnd);
 398             }
 399             break;
 400
 401         case WM_COMMAND:
 402             {
 403                 WXWORD id, cmd;
 404                 WXHWND hwnd;
 405                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 406
 407                 (void)HandleCommand(id, cmd, hwnd);
 408
 409                 // even if the frame didn't process it, there is no need to try it
 410                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 411                 // so pretend we processed the message anyhow
 412                 processed = TRUE;
 413             }
 414
 415             // always pass this message DefFrameProc(), otherwise MDI menu
 416             // commands (and sys commands - more surprizingly!) won't work
 417             MSWDefWindowProc(message, wParam, lParam);
 418             break;
 419
 420         case WM_CREATE:
 421             m_clientWindow = OnCreateClient();
 422             // Uses own style for client style
 423             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 424             {
 425                 wxLogMessage(_("Failed to create MDI parent frame."));
 426
 427                 rc = -1;
 428             }
 429
 430             processed = TRUE;
 431             break;
 432
 433         case WM_ERASEBKGND:
 434             processed = TRUE;
 435
 436             // we erase background ourselves
 437             rc = TRUE;
 438             break;
 439
 440         case WM_MENUSELECT:
 441             {
 442                 WXWORD item, flags;
 443                 WXHMENU hmenu;
 444                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 445
 446                 if ( m_parentFrameActive )
 447                 {
 448                     processed = HandleMenuSelect(item, flags, hmenu);
 449                 }
 450                 else if (m_currentChild)
 451                 {
 452                     processed = m_currentChild->
 453                         HandleMenuSelect(item, flags, hmenu);
 454                 }
 455             }
 456             break;
 457
 458         case WM_SIZE:
 459             // as we don't (usually) resize the MDI client to exactly fit the
 460             // client area (we put it below the toolbar, above statusbar &c),
 461             // we should not pass this one to DefFrameProc
 462             break;
 463     }
 464
 465     if ( !processed )
 466         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 467
 468     return rc;
 469 }
 470
 471 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 472 {
 473     bool processed = FALSE;
 474
 475     if ( wxWindow::HandleActivate(state, minimized, activate) )
 476     {
 477         // already processed
 478         processed = TRUE;
 479     }
 480
 481     // If this window is an MDI parent, we must also send an OnActivate message
 482     // to the current child.
 483     if ( (m_currentChild != NULL) &&
 484          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 485     {
 486         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 487         event.SetEventObject( m_currentChild );
 488         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 489             processed = TRUE;
 490     }
 491
 492     return processed;
 493 }
 494
 495 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 496 {
 497     // In case it's e.g. a toolbar.
 498     if ( hwnd )
 499     {
 500         wxWindow *win = wxFindWinFromHandle(hwnd);
 501         if ( win )
 502             return win->MSWCommand(cmd, id);
 503     }
 504
 505     // is it one of standard MDI commands?
 506     WXWPARAM wParam = 0;
 507     int msg;
 508     switch ( id )
 509     {
 510         case IDM_WINDOWCASCADE:
 511             msg = WM_MDICASCADE;
 512             wParam = MDITILE_SKIPDISABLED;
 513             break;
 514
 515         case IDM_WINDOWTILEHOR:
 516             wParam |= MDITILE_HORIZONTAL;
 517             // fall through
 518
 519         case IDM_WINDOWTILEVERT:
 520             if ( !wParam )
 521                 wParam = MDITILE_VERTICAL;
 522             msg = WM_MDITILE;
 523             wParam |= MDITILE_SKIPDISABLED;
 524             break;
 525
 526         case IDM_WINDOWICONS:
 527             msg = WM_MDIICONARRANGE;
 528             break;
 529
 530         case IDM_WINDOWNEXT:
 531             msg = WM_MDINEXT;
 532             break;
 533
 534         default:
 535             msg = 0;
 536     }
 537
 538     if ( msg )
 539     {
 540         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, 0);
 541
 542         return TRUE;
 543     }
 544
 545     // FIXME VZ: what does this test do??
 546     if (id >= 0xF000)
 547     {
 548         return FALSE; // Get WndProc to call default proc
 549     }
 550
 551     if ( IsMdiCommandId(id) )
 552     {
 553         wxWindowList::Node* node = GetChildren().GetFirst();
 554         while ( node )
 555         {
 556             wxWindow* child = node->GetData();
 557             if ( child->GetHWND() )
 558             {
 559                 long childId = wxGetWindowId(child->GetHWND());
 560                 if (childId == (long)id)
 561                 {
 562                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 563                                    WM_MDIACTIVATE,
 564                                    (WPARAM)child->GetHWND(), 0);
 565                     return TRUE;
 566                 }
 567             }
 568             node = node->GetNext();
 569         }
 570     }
 571     else if ( m_parentFrameActive )
 572     {
 573         return ProcessCommand(id);
 574     }
 575     else if ( m_currentChild )
 576     {
 577         return m_currentChild->HandleCommand(id, cmd, hwnd);
 578     }
 579     else
 580     {
 581         // this shouldn't happen because it means that our messages are being
 582         // lost (they're not sent to the parent frame nor to the children)
 583         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 584     }
 585
 586     return FALSE;
 587 }
 588
 589 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 590                                         WXWPARAM wParam,
 591                                         WXLPARAM lParam)
 592 {
 593     WXHWND clientWnd;
 594     if ( GetClientWindow() )
 595         clientWnd = GetClientWindow()->GetHWND();
 596     else
 597         clientWnd = 0;
 598
 599     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 600 }
 601
 602 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 603 {
 604     MSG *pMsg = (MSG *)msg;
 605
 606     // first let the current child get it
 607     if ( m_currentChild && m_currentChild->GetHWND() &&
 608          m_currentChild->MSWTranslateMessage(msg) )
 609     {
 610         return TRUE;
 611     }
 612
 613     // then try out accel table (will also check the menu accels)
 614     if ( wxFrame::MSWTranslateMessage(msg) )
 615     {
 616         return TRUE;
 617     }
 618
 619     // finally, check for MDI specific built in accel keys
 620     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 621     {
 622         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 623             return TRUE;
 624     }
 625
 626     return FALSE;
 627 }
 628
 629 // ===========================================================================
 630 // wxMDIChildFrame
 631 // ===========================================================================
 632
 633 void wxMDIChildFrame::Init()
 634 {
 635     m_needsResize = TRUE;
 636 }
 637
 638 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 639                              wxWindowID id,
 640                              const wxString& title,
 641                              const wxPoint& pos,
 642                              const wxSize& size,
 643                              long style,
 644                              const wxString& name)
 645 {
 646   m_defaultIcon = (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 647                                                      : wxDEFAULT_MDICHILDFRAME_ICON);
 648
 649   SetName(name);
 650
 651   if ( id > -1 )
 652     m_windowId = id;
 653   else
 654     m_windowId = (int)NewControlId();
 655
 656   if ( parent )
 657   {
 658       parent->AddChild(this);
 659   }
 660
 661   wxWndHook = this;
 662
 663   int x = pos.x;
 664   int y = pos.y;
 665   int width = size.x;
 666   int height = size.y;
 667
 668   MDICREATESTRUCT mcs;
 669
 670   mcs.szClass = style & wxNO_FULL_REPAINT_ON_RESIZE
 671                     ? wxMDIChildFrameClassNameNoRedraw
 672                     : wxMDIChildFrameClassName;
 673   mcs.szTitle = title;
 674   mcs.hOwner = wxGetInstance();
 675   if (x > -1)
 676       mcs.x = x;
 677   else
 678       mcs.x = CW_USEDEFAULT;
 679
 680   if (y > -1)
 681       mcs.y = y;
 682   else
 683       mcs.y = CW_USEDEFAULT;
 684
 685   if (width > -1)
 686       mcs.cx = width;
 687   else
 688       mcs.cx = CW_USEDEFAULT;
 689
 690   if (height > -1)
 691       mcs.cy = height;
 692   else
 693       mcs.cy = CW_USEDEFAULT;
 694
 695   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 696   if (style & wxMINIMIZE_BOX)
 697     msflags |= WS_MINIMIZEBOX;
 698   if (style & wxMAXIMIZE_BOX)
 699     msflags |= WS_MAXIMIZEBOX;
 700   if (style & wxTHICK_FRAME)
 701     msflags |= WS_THICKFRAME;
 702   if (style & wxSYSTEM_MENU)
 703     msflags |= WS_SYSMENU;
 704   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 705     msflags |= WS_MINIMIZE;
 706   if (style & wxMAXIMIZE)
 707     msflags |= WS_MAXIMIZE;
 708   if (style & wxCAPTION)
 709     msflags |= WS_CAPTION;
 710
 711   mcs.style = msflags;
 712
 713   mcs.lParam = 0;
 714
 715   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 716                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 717
 718   wxWndHook = NULL;
 719   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 720
 721   // VZ: what's this? an act of piracy?
 722   //SetWindowLong(GetHwnd(), 0, (long)this);
 723
 724   wxModelessWindows.Append(this);
 725   return TRUE;
 726 }
 727
 728 wxMDIChildFrame::~wxMDIChildFrame()
 729 {
 730     DestroyChildren();
 731
 732     // already delete by DestroyChildren()
 733     m_frameToolBar = NULL;
 734     m_frameStatusBar = NULL;
 735
 736     MSWDestroyWindow();
 737 }
 738
 739 // Set the client size (i.e. leave the calculation of borders etc.
 740 // to wxWindows)
 741 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 742 {
 743   HWND hWnd = GetHwnd();
 744
 745   RECT rect;
 746   ::GetClientRect(hWnd, &rect);
 747
 748   RECT rect2;
 749   GetWindowRect(hWnd, &rect2);
 750
 751   // Find the difference between the entire window (title bar and all)
 752   // and the client area; add this to the new client size to move the
 753   // window
 754   int actual_width = rect2.right - rect2.left - rect.right + width;
 755   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 756
 757   if (GetStatusBar() && GetStatusBar()->IsShown())
 758   {
 759     int sx, sy;
 760     GetStatusBar()->GetSize(&sx, &sy);
 761     actual_height += sy;
 762   }
 763
 764   POINT point;
 765   point.x = rect2.left;
 766   point.y = rect2.top;
 767
 768   // If there's an MDI parent, must subtract the parent's top left corner
 769   // since MoveWindow moves relative to the parent
 770   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 771   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 772
 773   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 774
 775   wxSizeEvent event(wxSize(width, height), m_windowId);
 776   event.SetEventObject( this );
 777   GetEventHandler()->ProcessEvent(event);
 778 }
 779
 780 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 781 {
 782   RECT rect;
 783   GetWindowRect(GetHwnd(), &rect);
 784   POINT point;
 785   point.x = rect.left;
 786   point.y = rect.top;
 787
 788   // Since we now have the absolute screen coords,
 789   // if there's a parent we must subtract its top left corner
 790   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 791   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 792
 793   *x = point.x;
 794   *y = point.y;
 795 }
 796
 797 void wxMDIChildFrame::InternalSetMenuBar()
 798 {
 799     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 800
 801     // HMENU subMenu = GetSubMenu((HMENU)parent->GetWindowMenu(), 0);
 802     HMENU subMenu = (HMENU) 0;
 803     if (parent->GetWindowMenu())
 804         subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 805
 806     InsertWindowMenu(parent->GetClientWindow(), m_hMenu, subMenu);
 807
 808     parent->m_parentFrameActive = FALSE;
 809 }
 810
 811 // ---------------------------------------------------------------------------
 812 // MDI operations
 813 // ---------------------------------------------------------------------------
 814
 815 void wxMDIChildFrame::Maximize(bool maximize)
 816 {
 817     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 818     if ( parent && parent->GetClientWindow() )
 819     {
 820         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 821                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 822                       (WPARAM)GetHwnd(), 0);
 823     }
 824 }
 825
 826 void wxMDIChildFrame::Restore()
 827 {
 828     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 829     if ( parent && parent->GetClientWindow() )
 830     {
 831         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 832                       (WPARAM) GetHwnd(), 0);
 833     }
 834 }
 835
 836 void wxMDIChildFrame::Activate()
 837 {
 838     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 839     if ( parent && parent->GetClientWindow() )
 840     {
 841         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 842                       (WPARAM) GetHwnd(), 0);
 843     }
 844 }
 845
 846 // ---------------------------------------------------------------------------
 847 // MDI window proc and message handlers
 848 // ---------------------------------------------------------------------------
 849
 850 long wxMDIChildFrame::MSWWindowProc(WXUINT message,
 851                                     WXWPARAM wParam,
 852                                     WXLPARAM lParam)
 853 {
 854     long rc = 0;
 855     bool processed = FALSE;
 856
 857     switch ( message )
 858     {
 859         case WM_COMMAND:
 860             {
 861                 WORD id, cmd;
 862                 WXHWND hwnd;
 863                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 864                               &id, &hwnd, &cmd);
 865
 866                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 867             }
 868             break;
 869
 870         case WM_GETMINMAXINFO:
 871             // let the default window proc calculate the size of MDI children
 872             // frames because it is based on the size of the MDI client window,
 873             // not on the values specified in wxWindow m_min/max variables
 874             return MSWDefWindowProc(message, wParam, lParam);
 875
 876         case WM_MDIACTIVATE:
 877             {
 878                 WXWORD act;
 879                 WXHWND hwndAct, hwndDeact;
 880                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 881
 882                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 883             }
 884             // fall through
 885
 886         case WM_MOVE:
 887             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 888             // scrollbars if necessary
 889
 890             // fall through
 891
 892         case WM_SIZE:
 893             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 894             // things happen
 895             MSWDefWindowProc(message, wParam, lParam);
 896             break;
 897
 898         case WM_SYSCOMMAND:
 899             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 900             // the message (the base class version does not)
 901             return MSWDefWindowProc(message, wParam, lParam);
 902
 903         case WM_WINDOWPOSCHANGING:
 904             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 905             break;
 906     }
 907
 908     if ( !processed )
 909         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 910
 911     return rc;
 912 }
 913
 914 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 915 {
 916     // In case it's e.g. a toolbar.
 917     if ( hwnd )
 918     {
 919         wxWindow *win = wxFindWinFromHandle(hwnd);
 920         if (win)
 921             return win->MSWCommand(cmd, id);
 922     }
 923
 924     if (wxCurrentPopupMenu)
 925     {
 926         wxMenu *popupMenu = wxCurrentPopupMenu;
 927         wxCurrentPopupMenu = NULL;
 928         if (popupMenu->MSWCommand(cmd, id))
 929             return TRUE;
 930     }
 931
 932     bool processed;
 933     if (GetMenuBar() && GetMenuBar()->FindItem(id))
 934     {
 935         processed = ProcessCommand(id);
 936     }
 937     else
 938     {
 939         processed = FALSE;
 940     }
 941
 942     return processed;
 943 }
 944
 945 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
 946                                         WXHWND hwndAct,
 947                                         WXHWND hwndDeact)
 948 {
 949     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 950
 951     HMENU menuToSet = 0;
 952
 953     bool activated;
 954
 955     if ( m_hWnd == hwndAct )
 956     {
 957         activated = TRUE;
 958         parent->m_currentChild = this;
 959
 960         HMENU child_menu = (HMENU)GetWinMenu();
 961         if ( child_menu )
 962         {
 963             parent->m_parentFrameActive = FALSE;
 964
 965             menuToSet = child_menu;
 966         }
 967     }
 968     else if ( m_hWnd == hwndDeact )
 969     {
 970         wxASSERT_MSG( parent->m_currentChild == this,
 971                       wxT("can't deactivate MDI child which wasn't active!") );
 972
 973         activated = FALSE;
 974         parent->m_currentChild = NULL;
 975
 976         HMENU parent_menu = (HMENU)parent->GetWinMenu();
 977         if ( parent_menu )
 978         {
 979             parent->m_parentFrameActive = TRUE;
 980
 981             menuToSet = parent_menu;
 982         }
 983     }
 984     else
 985     {
 986         // we have nothing to do with it
 987         return FALSE;
 988     }
 989
 990     if ( menuToSet )
 991     {
 992         HMENU subMenu = (HMENU) 0;
 993         if (parent->GetWindowMenu())
 994             subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 995
 996         MDISetMenu(parent->GetClientWindow(), menuToSet, subMenu);
 997     }
 998
 999     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1000     event.SetEventObject( this );
1001
1002     return GetEventHandler()->ProcessEvent(event);
1003 }
1004
1005 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1006 {
1007     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1008 #if defined(__WIN95__)
1009     if (!(lpPos->flags & SWP_NOSIZE))
1010     {
1011         RECT rectClient;
1012         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1013         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1014         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1015         {
1016             ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1017             lpPos->x = rectClient.left;
1018             lpPos->y = rectClient.top;
1019             lpPos->cx = rectClient.right - rectClient.left;
1020             lpPos->cy = rectClient.bottom - rectClient.top;
1021         }
1022         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1023         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1024         {
1025             pFrameWnd->GetToolBar()->Refresh();
1026         }
1027     }
1028 #endif // Win95
1029
1030     return FALSE;
1031 }
1032
1033 // ---------------------------------------------------------------------------
1034 // MDI specific message translation/preprocessing
1035 // ---------------------------------------------------------------------------
1036
1037 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
1038 {
1039     return DefMDIChildProc(GetHwnd(),
1040                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1041 }
1042
1043 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1044 {
1045     return wxFrame::MSWTranslateMessage(msg);
1046 }
1047
1048 // ---------------------------------------------------------------------------
1049 // misc
1050 // ---------------------------------------------------------------------------
1051
1052 void wxMDIChildFrame::MSWDestroyWindow()
1053 {
1054     MSWDetachWindowMenu();
1055     invalidHandle = GetHwnd();
1056
1057     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1058
1059     // Must make sure this handle is invalidated (set to NULL) since all sorts
1060     // of things could happen after the child client is destroyed, but before
1061     // the wxFrame is destroyed.
1062
1063     HWND oldHandle = (HWND)GetHWND();
1064     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1065                 (WPARAM)oldHandle, 0);
1066
1067     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1068         ResetWindowStyle((void*) NULL);
1069
1070     invalidHandle = 0;
1071
1072     if (m_hMenu)
1073     {
1074         ::DestroyMenu((HMENU) m_hMenu);
1075         m_hMenu = 0;
1076     }
1077     wxRemoveHandleAssociation(this);
1078     m_hWnd = 0;
1079 }
1080
1081 // Change the client window's extended style so we don't get a client edge
1082 // style when a child is maximised (a double border looks silly.)
1083 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1084 {
1085 #if defined(__WIN95__)
1086     RECT *rect = (RECT *)vrect;
1087     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1088     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1089     if (!pChild || (pChild == this))
1090     {
1091         DWORD dwStyle = ::GetWindowLong(GetWinHwnd(pFrameWnd->GetClientWindow()), GWL_EXSTYLE);
1092         DWORD dwThisStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1093         DWORD dwNewStyle = dwStyle;
1094         if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1095             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1096         else
1097             dwNewStyle |= WS_EX_CLIENTEDGE;
1098
1099         if (dwStyle != dwNewStyle)
1100         {
1101             HWND hwnd = GetWinHwnd(pFrameWnd->GetClientWindow());
1102             ::RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1103             ::SetWindowLong(hwnd, GWL_EXSTYLE, dwNewStyle);
1104             ::SetWindowPos(hwnd, NULL, 0, 0, 0, 0,
1105                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1106                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1107                            SWP_NOCOPYBITS);
1108             if (rect)
1109                 ::GetClientRect(hwnd, rect);
1110
1111             return TRUE;
1112         }
1113     }
1114 #endif // Win95
1115
1116     return FALSE;
1117 }
1118
1119 // ===========================================================================
1120 // wxMDIClientWindow: the window of predefined (by Windows) class which
1121 // contains the child frames
1122 // ===========================================================================
1123
1124 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1125 {
1126     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1127
1128     CLIENTCREATESTRUCT ccs;
1129     m_windowStyle = style;
1130     m_parent = parent;
1131
1132     ccs.hWindowMenu = (HMENU) 0;
1133     if (parent->GetWindowMenu())
1134         ccs.hWindowMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
1135     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1136
1137     DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN;
1138     if ( style & wxHSCROLL )
1139         msStyle |= WS_HSCROLL;
1140     if ( style & wxVSCROLL )
1141         msStyle |= WS_VSCROLL;
1142
1143 #if defined(__WIN95__)
1144     DWORD exStyle = WS_EX_CLIENTEDGE;
1145 #else
1146     DWORD exStyle = 0;
1147 #endif
1148
1149     wxWndHook = this;
1150     m_hWnd = (WXHWND)::CreateWindowEx
1151                        (
1152                         exStyle,
1153                         wxT("MDICLIENT"),
1154                         NULL,
1155                         msStyle,
1156                         0, 0, 0, 0,
1157                         GetWinHwnd(parent),
1158                         NULL,
1159                         wxGetInstance(),
1160                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1161     if ( !m_hWnd )
1162     {
1163         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1164
1165         return FALSE;
1166     }
1167
1168     SubclassWin(m_hWnd);
1169     wxWndHook = NULL;
1170
1171     return TRUE;
1172 }
1173
1174 // Explicitly call default scroll behaviour
1175 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1176 {
1177     // Note: for client windows, the scroll position is not set in
1178     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1179     // scroll position we're at.
1180     // This makes it hard to paint patterns or bitmaps in the background,
1181     // and have the client area scrollable as well.
1182
1183     if ( event.GetOrientation() == wxHORIZONTAL )
1184         m_scrollX = event.GetPosition(); // Always returns zero!
1185     else
1186         m_scrollY = event.GetPosition(); // Always returns zero!
1187
1188     event.Skip();
1189 }
1190
1191 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1192 {
1193     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1194     // client area, you can end up with a non-refreshed portion in the client window
1195     // (see OGL studio sample). So check if the position is changed and if so,
1196     // redraw the MDI child frames.
1197
1198     wxPoint oldPos = GetPosition();
1199
1200     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
1201
1202     wxPoint newPos = GetPosition();
1203
1204     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1205     {
1206         if (GetParent())
1207         {
1208             wxNode* node = GetParent()->GetChildren().First();
1209             while (node)
1210             {
1211                 wxWindow* child = (wxWindow*) node->Data();
1212                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1213                 {
1214                     HWND hWnd = (HWND) child->GetHWND();
1215                    ::RedrawWindow(hWnd, NULL, NULL, RDW_FRAME|RDW_ALLCHILDREN|RDW_INVALIDATE );
1216                 }
1217                 node = node->Next();
1218             }
1219         }
1220     }
1221 }
1222
1223 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1224 {
1225     // MDI child frames get their WM_SIZE when they're constructed but at this
1226     // moment they don't have any children yet so all child windows will be
1227     // positioned incorrectly when they are added later - to fix this, we
1228     // generate an artificial size event here
1229     if ( m_needsResize )
1230     {
1231         m_needsResize = FALSE; // avoid any possibility of recursion
1232
1233         SendSizeEvent();
1234     }
1235
1236     event.Skip();
1237 }
1238
1239 // ---------------------------------------------------------------------------
1240 // non member functions
1241 // ---------------------------------------------------------------------------
1242
1243 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1244 {
1245     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1246 #ifdef __WIN32__
1247                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1248 #else
1249                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1250 #endif
1251                  );
1252
1253     // update menu bar of the parent window
1254     wxWindow *parent = win->GetParent();
1255     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1256
1257     ::DrawMenuBar(GetWinHwnd(parent));
1258 }
1259
1260 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1261 {
1262     // Try to insert Window menu in front of Help, otherwise append it.
1263     HMENU hmenu = (HMENU)menu;
1264
1265     if (subMenu)
1266     {
1267     int N = GetMenuItemCount(hmenu);
1268     bool success = FALSE;
1269     for ( int i = 0; i < N; i++ )
1270     {
1271         wxChar buf[256];
1272         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1273         if ( chars == 0 )
1274         {
1275             wxLogLastError(wxT("GetMenuString"));
1276
1277             continue;
1278         }
1279
1280         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Help")) )
1281         {
1282             success = TRUE;
1283             ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1284                          (UINT)subMenu, _("&Window"));
1285             break;
1286         }
1287     }
1288
1289     if ( !success )
1290     {
1291         ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1292     }
1293     }
1294
1295     MDISetMenu(win, hmenu, subMenu);
1296 }
1297
1298 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1299 {
1300     // Try to insert Window menu in front of Help, otherwise append it.
1301     HMENU hmenu = (HMENU)menu;
1302     int N = GetMenuItemCount(hmenu);
1303     bool success = FALSE;
1304     for ( int i = 0; i < N; i++ )
1305     {
1306         wxChar buf[256];
1307         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1308         if ( chars == 0 )
1309         {
1310             wxLogLastError(wxT("GetMenuString"));
1311
1312             continue;
1313         }
1314
1315         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Window")) )
1316         {
1317             success = TRUE;
1318             ::RemoveMenu(hmenu, i, MF_BYPOSITION);
1319             break;
1320         }
1321     }
1322
1323     // Does passing 0 for the window menu really work with WM_MDISETMENU?
1324     MDISetMenu(win, hmenu, 0);
1325 }
1326
1327 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1328                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1329 {
1330 #ifdef __WIN32__
1331     *activate = TRUE;
1332     *hwndAct = (WXHWND)lParam;
1333     *hwndDeact = (WXHWND)wParam;
1334 #else // Win16
1335     *activate = (WXWORD)wParam;
1336     *hwndAct = (WXHWND)LOWORD(lParam);
1337     *hwndDeact = (WXHWND)HIWORD(lParam);
1338 #endif // Win32/Win16
1339 }