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 wxChar wxMDIFrameClassName[];
  67 extern wxChar wxMDIChildFrameClassName[];
  68 extern wxWindow *wxWndHook;                 // from window.cpp
  69
  70 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  71
  72 static HWND invalidHandle = 0;
  73
  74 // ---------------------------------------------------------------------------
  75 // constants
  76 // ---------------------------------------------------------------------------
  77
  78 static const int IDM_WINDOWTILE  = 4001;
  79 static const int IDM_WINDOWTILEHOR  = 4001;
  80 static const int IDM_WINDOWCASCADE = 4002;
  81 static const int IDM_WINDOWICONS = 4003;
  82 static const int IDM_WINDOWNEXT = 4004;
  83 static const int IDM_WINDOWTILEVERT = 4005;
  84
  85 // This range gives a maximum of 500 MDI children. Should be enough :-)
  86 static const int wxFIRST_MDI_CHILD = 4100;
  87 static const int wxLAST_MDI_CHILD = 4600;
  88
  89 // Status border dimensions
  90 static const int wxTHICK_LINE_BORDER = 3;
  91 static const int wxTHICK_LINE_WIDTH  = 1;
  92
  93 // ---------------------------------------------------------------------------
  94 // private functions
  95 // ---------------------------------------------------------------------------
  96
  97 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  98 // of the parent of win (which is supposed to be the MDI client window)
  99 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
 100
 101 // insert the window menu (subMenu) into menu just before "Help" submenu or at
 102 // the very end if not found
 103 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
 104
 105 // is this an id of an MDI child?
 106 inline bool IsMdiCommandId(int id)
 107 {
 108     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 109 }
 110
 111 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 112                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 113
 114 // ===========================================================================
 115 // implementation
 116 // ===========================================================================
 117
 118 // ---------------------------------------------------------------------------
 119 // wxWin macros
 120 // ---------------------------------------------------------------------------
 121
 122 #if !USE_SHARED_LIBRARY
 123     IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 124     IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 125     IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 126 #endif // USE_SHARED_LIBRARY
 127
 128 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 129     EVT_SIZE(wxMDIParentFrame::OnSize)
 130     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 131 END_EVENT_TABLE()
 132
 133 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 134     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 135 END_EVENT_TABLE()
 136
 137 // ===========================================================================
 138 // wxMDIParentFrame: the frame which contains the client window which manages
 139 // the children
 140 // ===========================================================================
 141
 142 wxMDIParentFrame::wxMDIParentFrame()
 143 {
 144     m_clientWindow = NULL;
 145     m_currentChild = NULL;
 146     m_windowMenu = 0;
 147     m_parentFrameActive = TRUE;
 148 }
 149
 150 bool wxMDIParentFrame::Create(wxWindow *parent,
 151                               wxWindowID id,
 152                               const wxString& title,
 153                               const wxPoint& pos,
 154                               const wxSize& size,
 155                               long style,
 156                               const wxString& name)
 157 {
 158   m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON : wxDEFAULT_MDIPARENTFRAME_ICON);
 159
 160   m_clientWindow = NULL;
 161   m_currentChild = NULL;
 162   m_windowMenu = 0;
 163   m_parentFrameActive = TRUE;
 164
 165   if (!parent)
 166     wxTopLevelWindows.Append(this);
 167
 168   SetName(name);
 169   m_windowStyle = style;
 170
 171   if (parent) parent->AddChild(this);
 172
 173   if ( id > -1 )
 174     m_windowId = id;
 175   else
 176     m_windowId = (int)NewControlId();
 177
 178   int x = pos.x;
 179   int y = pos.y;
 180   int width = size.x;
 181   int height = size.y;
 182
 183   m_windowMenu = (WXHMENU) ::LoadMenu(wxGetInstance(), wxT("wxWindowMenu"));
 184
 185   DWORD msflags = WS_OVERLAPPED;
 186   if (style & wxMINIMIZE_BOX)
 187     msflags |= WS_MINIMIZEBOX;
 188   if (style & wxMAXIMIZE_BOX)
 189     msflags |= WS_MAXIMIZEBOX;
 190   if (style & wxTHICK_FRAME)
 191     msflags |= WS_THICKFRAME;
 192   if (style & wxSYSTEM_MENU)
 193     msflags |= WS_SYSMENU;
 194   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 195     msflags |= WS_MINIMIZE;
 196   if (style & wxMAXIMIZE)
 197     msflags |= WS_MAXIMIZE;
 198   if (style & wxCAPTION)
 199     msflags |= WS_CAPTION;
 200
 201   if (style & wxCLIP_CHILDREN)
 202     msflags |= WS_CLIPCHILDREN;
 203
 204   wxWindow::MSWCreate(m_windowId, parent, wxMDIFrameClassName, this, title, x, y, width, height,
 205          msflags);
 206
 207   wxModelessWindows.Append(this);
 208
 209   return TRUE;
 210 }
 211
 212 wxMDIParentFrame::~wxMDIParentFrame()
 213 {
 214     DestroyChildren();
 215
 216     // already delete by DestroyChildren()
 217     m_frameToolBar = NULL;
 218
 219     ::DestroyMenu((HMENU)m_windowMenu);
 220     m_windowMenu = 0;
 221
 222     if ( m_clientWindow )
 223     {
 224         if ( m_clientWindow->MSWGetOldWndProc() )
 225             m_clientWindow->UnsubclassWin();
 226
 227         m_clientWindow->SetHWND(0);
 228         delete m_clientWindow;
 229     }
 230 }
 231
 232 void wxMDIParentFrame::InternalSetMenuBar()
 233 {
 234     HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
 235
 236     m_parentFrameActive = TRUE;
 237
 238     InsertWindowMenu(GetClientWindow(), m_hMenu, subMenu);
 239 }
 240
 241 void wxMDIParentFrame::OnSize(wxSizeEvent& event)
 242 {
 243     if ( GetClientWindow() )
 244     {
 245         int width, height;
 246         GetClientSize(&width, &height);
 247
 248         GetClientWindow()->SetSize(0, 0, width, height);
 249     }
 250 }
 251
 252 // Returns the active MDI child window
 253 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 254 {
 255     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 256                                     WM_MDIGETACTIVE, 0, 0L);
 257     if ( hWnd == 0 )
 258         return NULL;
 259     else
 260         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 261 }
 262
 263 // Create the client window class (don't Create the window, just return a new
 264 // class)
 265 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 266 {
 267     return new wxMDIClientWindow;
 268 }
 269
 270 // Responds to colour changes, and passes event on to children.
 271 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 272 {
 273     if ( m_clientWindow )
 274     {
 275         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 276         m_clientWindow->Refresh();
 277     }
 278
 279     event.Skip();
 280 }
 281
 282 // ---------------------------------------------------------------------------
 283 // MDI operations
 284 // ---------------------------------------------------------------------------
 285
 286 void wxMDIParentFrame::Cascade()
 287 {
 288     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 289 }
 290
 291 // TODO: add a direction argument (hor/vert)
 292 void wxMDIParentFrame::Tile()
 293 {
 294     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 295 }
 296
 297 void wxMDIParentFrame::ArrangeIcons()
 298 {
 299     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 300 }
 301
 302 void wxMDIParentFrame::ActivateNext()
 303 {
 304     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 305 }
 306
 307 void wxMDIParentFrame::ActivatePrevious()
 308 {
 309     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 310 }
 311
 312 // ---------------------------------------------------------------------------
 313 // the MDI parent frame window proc
 314 // ---------------------------------------------------------------------------
 315
 316 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 317                                      WXWPARAM wParam,
 318                                      WXLPARAM lParam)
 319 {
 320     long rc = 0;
 321     bool processed = FALSE;
 322
 323     switch ( message )
 324     {
 325         case WM_ACTIVATE:
 326             {
 327                 WXWORD state, minimized;
 328                 WXHWND hwnd;
 329                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 330
 331                 processed = HandleActivate(state, minimized != 0, hwnd);
 332             }
 333             break;
 334
 335         case WM_COMMAND:
 336             {
 337                 WXWORD id, cmd;
 338                 WXHWND hwnd;
 339                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 340
 341                 (void)HandleCommand(id, cmd, hwnd);
 342
 343                 // even if the frame didn't process it, there is no need to try it
 344                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 345                 // so pretend we processed the message anyhow
 346                 processed = TRUE;
 347             }
 348
 349             // always pass this message DefFrameProc(), otherwise MDI menu
 350             // commands (and sys commands - more surprizingly!) won't work
 351             MSWDefWindowProc(message, wParam, lParam);
 352             break;
 353
 354         case WM_CREATE:
 355             m_clientWindow = OnCreateClient();
 356             // Uses own style for client style
 357             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 358             {
 359                 wxLogMessage(_("Failed to create MDI parent frame."));
 360
 361                 rc = -1;
 362             }
 363
 364             processed = TRUE;
 365             break;
 366
 367         case WM_ERASEBKGND:
 368             processed = TRUE;
 369
 370             // we erase background ourselves
 371             rc = TRUE;
 372             break;
 373
 374         case WM_MENUSELECT:
 375             {
 376                 WXWORD item, flags;
 377                 WXHMENU hmenu;
 378                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 379
 380                 if ( m_parentFrameActive )
 381                 {
 382                     processed = HandleMenuSelect(item, flags, hmenu);
 383                 }
 384                 else if (m_currentChild)
 385                 {
 386                     processed = m_currentChild->
 387                         HandleMenuSelect(item, flags, hmenu);
 388                 }
 389             }
 390             break;
 391
 392         case WM_SIZE:
 393             // as we don't (usually) resize the MDI client to exactly fit the
 394             // client area (we put it below the toolbar, above statusbar &c),
 395             // we should not pass this one to DefFrameProc
 396             break;
 397     }
 398
 399     if ( !processed )
 400         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 401
 402     return rc;
 403 }
 404
 405 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 406 {
 407     bool processed = FALSE;
 408
 409     if ( wxWindow::HandleActivate(state, minimized, activate) )
 410     {
 411         // already processed
 412         processed = TRUE;
 413     }
 414
 415     // If this window is an MDI parent, we must also send an OnActivate message
 416     // to the current child.
 417     if ( (m_currentChild != NULL) &&
 418          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 419     {
 420         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 421         event.SetEventObject( m_currentChild );
 422         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 423             processed = TRUE;
 424     }
 425
 426     return processed;
 427 }
 428
 429 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 430 {
 431     // In case it's e.g. a toolbar.
 432     if ( hwnd )
 433     {
 434         wxWindow *win = wxFindWinFromHandle(hwnd);
 435         if ( win )
 436             return win->MSWCommand(cmd, id);
 437     }
 438
 439     // is it one of standard MDI commands?
 440     WXWPARAM wParam = 0;
 441     int msg;
 442     switch ( id )
 443     {
 444         case IDM_WINDOWCASCADE:
 445             msg = WM_MDICASCADE;
 446             wParam = MDITILE_SKIPDISABLED;
 447             break;
 448
 449         case IDM_WINDOWTILEHOR:
 450             wParam |= MDITILE_HORIZONTAL;
 451             // fall through
 452
 453         case IDM_WINDOWTILEVERT:
 454             if ( !wParam )
 455                 wParam = MDITILE_VERTICAL;
 456             msg = WM_MDITILE;
 457             wParam |= MDITILE_SKIPDISABLED;
 458             break;
 459
 460         case IDM_WINDOWICONS:
 461             msg = WM_MDIICONARRANGE;
 462             break;
 463
 464         case IDM_WINDOWNEXT:
 465             msg = WM_MDINEXT;
 466             break;
 467
 468         default:
 469             msg = 0;
 470     }
 471
 472     if ( msg )
 473     {
 474         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, 0);
 475
 476         return TRUE;
 477     }
 478
 479     // FIXME VZ: what does this test do??
 480     if (id >= 0xF000)
 481     {
 482         return FALSE; // Get WndProc to call default proc
 483     }
 484
 485     if ( IsMdiCommandId(id) )
 486     {
 487         wxWindowList::Node* node = GetChildren().GetFirst();
 488         while ( node )
 489         {
 490             wxWindow* child = node->GetData();
 491             if ( child->GetHWND() )
 492             {
 493                 long childId = wxGetWindowId(child->GetHWND());
 494                 if (childId == (long)id)
 495                 {
 496                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 497                                    WM_MDIACTIVATE,
 498                                    (WPARAM)child->GetHWND(), 0);
 499                     return TRUE;
 500                 }
 501             }
 502             node = node->GetNext();
 503         }
 504     }
 505     else if ( m_parentFrameActive )
 506     {
 507         return ProcessCommand(id);
 508     }
 509     else if ( m_currentChild )
 510     {
 511         return m_currentChild->HandleCommand(id, cmd, hwnd);
 512     }
 513     else
 514     {
 515         // this shouldn't happen because it means that our messages are being
 516         // lost (they're not sent to the parent frame nor to the children)
 517         wxFAIL_MSG(wxT("MDI parent frame is not active, "
 518                       "yet there is no active MDI child?"));
 519     }
 520
 521     return FALSE;
 522 }
 523
 524 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 525                                         WXWPARAM wParam,
 526                                         WXLPARAM lParam)
 527 {
 528     WXHWND clientWnd;
 529     if ( GetClientWindow() )
 530         clientWnd = GetClientWindow()->GetHWND();
 531     else
 532         clientWnd = 0;
 533
 534     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 535 }
 536
 537 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 538 {
 539     MSG *pMsg = (MSG *)msg;
 540
 541     if ( m_currentChild && m_currentChild->GetHWND() &&
 542          m_currentChild->MSWTranslateMessage(msg) )
 543     {
 544         return TRUE;
 545     }
 546
 547     if ( m_acceleratorTable.Translate(this, msg) )
 548     {
 549         return TRUE;
 550     }
 551
 552     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 553     {
 554         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 555             return TRUE;
 556     }
 557
 558     return FALSE;
 559 }
 560
 561 // ===========================================================================
 562 // wxMDIChildFrame
 563 // ===========================================================================
 564
 565 wxMDIChildFrame::wxMDIChildFrame()
 566 {
 567 }
 568
 569 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 570                              wxWindowID id,
 571                              const wxString& title,
 572                              const wxPoint& pos,
 573                              const wxSize& size,
 574                              long style,
 575                              const wxString& name)
 576 {
 577   m_defaultIcon = (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 578                                                      : wxDEFAULT_MDICHILDFRAME_ICON);
 579
 580   SetName(name);
 581
 582   if ( id > -1 )
 583     m_windowId = id;
 584   else
 585     m_windowId = (int)NewControlId();
 586
 587   if ( parent )
 588   {
 589       parent->AddChild(this);
 590   }
 591
 592   wxWndHook = this;
 593
 594   int x = pos.x;
 595   int y = pos.y;
 596   int width = size.x;
 597   int height = size.y;
 598
 599   MDICREATESTRUCT mcs;
 600
 601   mcs.szClass = wxMDIChildFrameClassName;
 602   mcs.szTitle = title;
 603   mcs.hOwner = wxGetInstance();
 604   if (x > -1)
 605       mcs.x = x;
 606   else
 607       mcs.x = CW_USEDEFAULT;
 608
 609   if (y > -1)
 610       mcs.y = y;
 611   else
 612       mcs.y = CW_USEDEFAULT;
 613
 614   if (width > -1)
 615       mcs.cx = width;
 616   else
 617       mcs.cx = CW_USEDEFAULT;
 618
 619   if (height > -1)
 620       mcs.cy = height;
 621   else
 622       mcs.cy = CW_USEDEFAULT;
 623
 624   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 625   if (style & wxMINIMIZE_BOX)
 626     msflags |= WS_MINIMIZEBOX;
 627   if (style & wxMAXIMIZE_BOX)
 628     msflags |= WS_MAXIMIZEBOX;
 629   if (style & wxTHICK_FRAME)
 630     msflags |= WS_THICKFRAME;
 631   if (style & wxSYSTEM_MENU)
 632     msflags |= WS_SYSMENU;
 633   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 634     msflags |= WS_MINIMIZE;
 635   if (style & wxMAXIMIZE)
 636     msflags |= WS_MAXIMIZE;
 637   if (style & wxCAPTION)
 638     msflags |= WS_CAPTION;
 639
 640   mcs.style = msflags;
 641
 642   mcs.lParam = 0;
 643
 644   DWORD Return = SendMessage(GetWinHwnd(parent->GetClientWindow()),
 645                              WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 646
 647   //handle = (HWND)LOWORD(Return);
 648   // Must be the DWORRD for WIN32. And in 16 bits, HIWORD=0 (says Microsoft)
 649   m_hWnd = (WXHWND)Return;
 650
 651   wxWndHook = NULL;
 652   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 653
 654   // VZ: what's this? an act of piracy?
 655   //SetWindowLong(GetHwnd(), 0, (long)this);
 656
 657   wxModelessWindows.Append(this);
 658   return TRUE;
 659 }
 660
 661 wxMDIChildFrame::~wxMDIChildFrame()
 662 {
 663     MSWDestroyWindow();
 664 }
 665
 666 // Set the client size (i.e. leave the calculation of borders etc.
 667 // to wxWindows)
 668 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 669 {
 670   HWND hWnd = GetHwnd();
 671
 672   RECT rect;
 673   ::GetClientRect(hWnd, &rect);
 674
 675   RECT rect2;
 676   GetWindowRect(hWnd, &rect2);
 677
 678   // Find the difference between the entire window (title bar and all)
 679   // and the client area; add this to the new client size to move the
 680   // window
 681   int actual_width = rect2.right - rect2.left - rect.right + width;
 682   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 683
 684   if (GetStatusBar())
 685   {
 686     int sx, sy;
 687     GetStatusBar()->GetSize(&sx, &sy);
 688     actual_height += sy;
 689   }
 690
 691   POINT point;
 692   point.x = rect2.left;
 693   point.y = rect2.top;
 694
 695   // If there's an MDI parent, must subtract the parent's top left corner
 696   // since MoveWindow moves relative to the parent
 697   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 698   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 699
 700   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 701
 702   wxSizeEvent event(wxSize(width, height), m_windowId);
 703   event.SetEventObject( this );
 704   GetEventHandler()->ProcessEvent(event);
 705 }
 706
 707 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 708 {
 709   RECT rect;
 710   GetWindowRect(GetHwnd(), &rect);
 711   POINT point;
 712   point.x = rect.left;
 713   point.y = rect.top;
 714
 715   // Since we now have the absolute screen coords,
 716   // if there's a parent we must subtract its top left corner
 717   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 718   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 719
 720   *x = point.x;
 721   *y = point.y;
 722 }
 723
 724 void wxMDIChildFrame::InternalSetMenuBar()
 725 {
 726     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 727
 728     HMENU subMenu = GetSubMenu((HMENU)parent->GetWindowMenu(), 0);
 729
 730     InsertWindowMenu(parent->GetClientWindow(), m_hMenu, subMenu);
 731
 732     parent->m_parentFrameActive = FALSE;
 733 }
 734
 735 // ---------------------------------------------------------------------------
 736 // MDI operations
 737 // ---------------------------------------------------------------------------
 738
 739 void wxMDIChildFrame::Maximize(bool maximize)
 740 {
 741     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 742     if ( parent && parent->GetClientWindow() )
 743     {
 744         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 745                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 746                       (WPARAM)GetHwnd(), 0);
 747     }
 748 }
 749
 750 void wxMDIChildFrame::Restore()
 751 {
 752     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 753     if ( parent && parent->GetClientWindow() )
 754     {
 755         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 756                       (WPARAM) GetHwnd(), 0);
 757     }
 758 }
 759
 760 void wxMDIChildFrame::Activate()
 761 {
 762     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 763     if ( parent && parent->GetClientWindow() )
 764     {
 765         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 766                       (WPARAM) GetHwnd(), 0);
 767     }
 768 }
 769
 770 // ---------------------------------------------------------------------------
 771 // MDI window proc and message handlers
 772 // ---------------------------------------------------------------------------
 773
 774 long wxMDIChildFrame::MSWWindowProc(WXUINT message,
 775                                     WXWPARAM wParam,
 776                                     WXLPARAM lParam)
 777 {
 778     long rc = 0;
 779     bool processed = FALSE;
 780
 781     switch ( message )
 782     {
 783         case WM_COMMAND:
 784             {
 785                 WORD id, cmd;
 786                 WXHWND hwnd;
 787                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 788                               &id, &hwnd, &cmd);
 789
 790                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 791             }
 792             break;
 793
 794         case WM_GETMINMAXINFO:
 795             // let the default window proc calculate the size of MDI children
 796             // frames because it is based on the size of the MDI client window,
 797             // not on the values specified in wxWindow m_min/max variables
 798             return MSWDefWindowProc(message, wParam, lParam);
 799
 800         case WM_MDIACTIVATE:
 801             {
 802                 WXWORD act;
 803                 WXHWND hwndAct, hwndDeact;
 804                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 805
 806                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 807             }
 808             // fall through
 809
 810         case WM_MOVE:
 811             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 812             // scrollbars if necessary
 813
 814             // fall through
 815
 816         case WM_SIZE:
 817             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 818             // things happen
 819             MSWDefWindowProc(message, wParam, lParam);
 820             break;
 821
 822         case WM_SYSCOMMAND:
 823             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 824             // the message (the base class version does not)
 825             return MSWDefWindowProc(message, wParam, lParam);
 826
 827         case WM_WINDOWPOSCHANGING:
 828             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 829             break;
 830     }
 831
 832     if ( !processed )
 833         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 834
 835     return rc;
 836 }
 837
 838 bool wxMDIChildFrame::HandleSize(int x, int y, WXUINT id)
 839 {
 840     HWND hwnd = GetHwnd();
 841
 842     if ( !hwnd || hwnd == invalidHandle )
 843     {
 844         return FALSE;
 845     }
 846
 847     switch (id)
 848     {
 849         case SIZEFULLSCREEN:
 850         case SIZENORMAL:
 851             m_iconized = FALSE;
 852             break;
 853
 854         case SIZEICONIC:
 855             m_iconized = TRUE;
 856             break;
 857     }
 858
 859     if ( !m_iconized )
 860     {
 861         // forward WM_SIZE to status bar control
 862 #if wxUSE_NATIVE_STATUSBAR
 863         if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
 864         {
 865             wxSizeEvent event(wxSize(x, y), m_frameStatusBar->GetId());
 866             event.SetEventObject( m_frameStatusBar );
 867
 868             ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
 869         }
 870 #endif // wxUSE_NATIVE_STATUSBAR
 871
 872         PositionStatusBar();
 873         PositionToolBar();
 874
 875         return wxWindow::HandleSize(x, y, id);
 876     }
 877     else
 878     {
 879         return FALSE;
 880     }
 881 }
 882
 883 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 884 {
 885     // In case it's e.g. a toolbar.
 886     if ( hwnd )
 887     {
 888         wxWindow *win = wxFindWinFromHandle(hwnd);
 889         if (win)
 890             return win->MSWCommand(cmd, id);
 891     }
 892
 893     if (wxCurrentPopupMenu)
 894     {
 895         wxMenu *popupMenu = wxCurrentPopupMenu;
 896         wxCurrentPopupMenu = NULL;
 897         if (popupMenu->MSWCommand(cmd, id))
 898             return TRUE;
 899     }
 900
 901     if (GetMenuBar() && GetMenuBar()->FindItem(id))
 902     {
 903         ProcessCommand(id);
 904         return TRUE;
 905     }
 906     else
 907         return FALSE;
 908
 909     return TRUE;
 910 }
 911
 912 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
 913                                         WXHWND hwndAct,
 914                                         WXHWND hwndDeact)
 915 {
 916     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 917
 918     HMENU menuToSet = 0;
 919
 920     bool activated;
 921
 922     if ( m_hWnd == hwndAct )
 923     {
 924         activated = TRUE;
 925         parent->m_currentChild = this;
 926
 927         HMENU child_menu = (HMENU)GetWinMenu();
 928         if ( child_menu )
 929         {
 930             parent->m_parentFrameActive = FALSE;
 931
 932             menuToSet = child_menu;
 933         }
 934     }
 935     else if ( m_hWnd == hwndDeact )
 936     {
 937         wxASSERT_MSG( parent->m_currentChild == this,
 938                       wxT("can't deactivate MDI child which wasn't active!") );
 939
 940         activated = FALSE;
 941         parent->m_currentChild = NULL;
 942
 943         HMENU parent_menu = (HMENU)parent->GetWinMenu();
 944         if ( parent_menu )
 945         {
 946             parent->m_parentFrameActive = TRUE;
 947
 948             menuToSet = parent_menu;
 949         }
 950     }
 951     else
 952     {
 953         // we have nothing to with it
 954         return FALSE;
 955     }
 956
 957     if ( menuToSet )
 958     {
 959         HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
 960
 961         MDISetMenu(parent->GetClientWindow(), menuToSet, subMenu);
 962     }
 963
 964     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
 965     event.SetEventObject( this );
 966
 967     return GetEventHandler()->ProcessEvent(event);
 968 }
 969
 970 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
 971 {
 972     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
 973 #if defined(__WIN95__)
 974     if (!(lpPos->flags & SWP_NOSIZE))
 975     {
 976         RECT rectClient;
 977         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
 978         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 979         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
 980         {
 981             ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
 982             lpPos->x = rectClient.left;
 983             lpPos->y = rectClient.top;
 984             lpPos->cx = rectClient.right - rectClient.left;
 985             lpPos->cy = rectClient.bottom - rectClient.top;
 986         }
 987         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
 988         if (pFrameWnd && pFrameWnd->GetToolBar())
 989         {
 990             pFrameWnd->GetToolBar()->Refresh();
 991         }
 992     }
 993 #endif // Win95
 994
 995     return FALSE;
 996 }
 997
 998 // ---------------------------------------------------------------------------
 999 // MDI specific message translation/preprocessing
1000 // ---------------------------------------------------------------------------
1001
1002 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
1003 {
1004     return DefMDIChildProc(GetHwnd(),
1005                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1006 }
1007
1008 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1009 {
1010     return m_acceleratorTable.Translate(GetParent(), msg);
1011 }
1012
1013 // ---------------------------------------------------------------------------
1014 // misc
1015 // ---------------------------------------------------------------------------
1016
1017 void wxMDIChildFrame::MSWDestroyWindow()
1018 {
1019     MSWDetachWindowMenu();
1020     invalidHandle = GetHwnd();
1021
1022     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1023
1024     // Must make sure this handle is invalidated (set to NULL) since all sorts
1025     // of things could happen after the child client is destroyed, but before
1026     // the wxFrame is destroyed.
1027
1028     HWND oldHandle = (HWND)GetHWND();
1029     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1030                 (WPARAM)oldHandle, 0);
1031     invalidHandle = 0;
1032
1033     if (m_hMenu)
1034     {
1035         ::DestroyMenu((HMENU) m_hMenu);
1036         m_hMenu = 0;
1037     }
1038     m_hWnd = 0;
1039 }
1040
1041 // Change the client window's extended style so we don't get a client edge
1042 // style when a child is maximised (a double border looks silly.)
1043 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1044 {
1045 #if defined(__WIN95__)
1046     RECT *rect = (RECT *)vrect;
1047     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1048     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1049     if (!pChild || (pChild == this))
1050     {
1051         DWORD dwStyle = ::GetWindowLong(GetWinHwnd(pFrameWnd->GetClientWindow()), GWL_EXSTYLE);
1052         DWORD dwThisStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1053         DWORD dwNewStyle = dwStyle;
1054         if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1055             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1056         else
1057             dwNewStyle |= WS_EX_CLIENTEDGE;
1058
1059         if (dwStyle != dwNewStyle)
1060         {
1061             HWND hwnd = GetWinHwnd(pFrameWnd->GetClientWindow());
1062             ::RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1063             ::SetWindowLong(hwnd, GWL_EXSTYLE, dwNewStyle);
1064             ::SetWindowPos(hwnd, NULL, 0, 0, 0, 0,
1065                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1066                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1067                            SWP_NOCOPYBITS);
1068             if (rect)
1069                 ::GetClientRect(hwnd, rect);
1070
1071             return TRUE;
1072         }
1073     }
1074 #endif // Win95
1075
1076     return FALSE;
1077 }
1078
1079 // ===========================================================================
1080 // wxMDIClientWindow: the window of predefined (by Windows) class which
1081 // contains the child frames
1082 // ===========================================================================
1083
1084 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1085 {
1086     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1087
1088     CLIENTCREATESTRUCT ccs;
1089     m_windowStyle = style;
1090     m_parent = parent;
1091
1092     ccs.hWindowMenu = (HMENU)parent->GetWindowMenu();
1093     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1094
1095     DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN;
1096     if ( style & wxHSCROLL )
1097         msStyle |= WS_HSCROLL;
1098     if ( style & wxVSCROLL )
1099         msStyle |= WS_VSCROLL;
1100
1101 #if defined(__WIN95__)
1102     DWORD exStyle = WS_EX_CLIENTEDGE;
1103 #else
1104     DWORD exStyle = 0;
1105 #endif
1106
1107     wxWndHook = this;
1108     m_hWnd = (WXHWND)::CreateWindowEx
1109                        (
1110                         exStyle,
1111                         wxT("MDICLIENT"),
1112                         NULL,
1113                         msStyle,
1114                         0, 0, 0, 0,
1115                         GetWinHwnd(parent),
1116                         NULL,
1117                         wxGetInstance(),
1118                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1119     if ( !m_hWnd )
1120     {
1121         wxLogLastError("CreateWindowEx(MDI client)");
1122
1123         return FALSE;
1124     }
1125
1126     SubclassWin(m_hWnd);
1127     wxWndHook = NULL;
1128
1129     return TRUE;
1130 }
1131
1132 // Explicitly call default scroll behaviour
1133 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1134 {
1135     // Note: for client windows, the scroll position is not set in
1136     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1137     // scroll position we're at.
1138     // This makes it hard to paint patterns or bitmaps in the background,
1139     // and have the client area scrollable as well.
1140
1141     if ( event.GetOrientation() == wxHORIZONTAL )
1142         m_scrollX = event.GetPosition(); // Always returns zero!
1143     else
1144         m_scrollY = event.GetPosition(); // Always returns zero!
1145
1146     event.Skip();
1147 }
1148
1149 // ---------------------------------------------------------------------------
1150 // non member functions
1151 // ---------------------------------------------------------------------------
1152
1153 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1154 {
1155     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1156 #ifdef __WIN32__
1157                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow);
1158 #else
1159                   0, MAKELPARAM(hmenuFrame, hmenuWindow));
1160 #endif
1161
1162     // update menu bar of the parent window
1163     wxWindow *parent = win->GetParent();
1164     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1165
1166     ::DrawMenuBar(GetWinHwnd(parent));
1167 }
1168
1169 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1170 {
1171     // Try to insert Window menu in front of Help, otherwise append it.
1172     HMENU hmenu = (HMENU)menu;
1173     int N = GetMenuItemCount(hmenu);
1174     bool success = FALSE;
1175     for ( int i = 0; i < N; i++ )
1176     {
1177         wxChar buf[256];
1178         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1179         if ( chars == 0 )
1180         {
1181             wxLogLastError(wxT("GetMenuString"));
1182
1183             continue;
1184         }
1185
1186         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(wxT("Help")) )
1187         {
1188             success = TRUE;
1189             ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1190                          (UINT)subMenu, wxT("&Window"));
1191             break;
1192         }
1193     }
1194
1195     if ( !success )
1196     {
1197         ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, wxT("&Window"));
1198     }
1199
1200     MDISetMenu(win, hmenu, subMenu);
1201 }
1202
1203 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1204                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1205 {
1206 #ifdef __WIN32__
1207     *activate = TRUE;
1208     *hwndAct = (WXHWND)lParam;
1209     *hwndDeact = (WXHWND)wParam;
1210 #else // Win16
1211     *activate = (WXWORD)wParam;
1212     *hwndAct = (WXHWND)LOWORD(lParam);
1213     *hwndDeact = (WXHWND)HIWORD(lParam);
1214 #endif // Win32/Win16
1215 }