///////////////////////////////////////////////////////////////////////////// // Name: src/msw/mdi.cpp // Purpose: MDI classes for wxMSW // Author: Julian Smart // Modified by: Vadim Zeitlin on 2008-11-04 to use the base classes // Created: 04/01/98 // Copyright: (c) 1998 Julian Smart // (c) 2008-2009 Vadim Zeitlin // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // =========================================================================== // declarations // =========================================================================== // --------------------------------------------------------------------------- // headers // --------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #if wxUSE_MDI && !defined(__WXUNIVERSAL__) #include "wx/mdi.h" #ifndef WX_PRECOMP #include "wx/frame.h" #include "wx/menu.h" #include "wx/app.h" #include "wx/utils.h" #include "wx/dialog.h" #include "wx/statusbr.h" #include "wx/settings.h" #include "wx/intl.h" #include "wx/log.h" #include "wx/toolbar.h" #endif #include "wx/stockitem.h" #include "wx/msw/private.h" #include // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- extern wxMenu *wxCurrentPopupMenu; extern void wxRemoveHandleAssociation(wxWindow *win); namespace { // --------------------------------------------------------------------------- // constants // --------------------------------------------------------------------------- // First ID for the MDI child menu item in the "Window" menu. const int wxFIRST_MDI_CHILD = 4100; // There can be no more than 9 children in the "Window" menu as beginning with // the tenth one they're not shown and "More windows..." menu item is used // instead. const int wxLAST_MDI_CHILD = wxFIRST_MDI_CHILD + 8; // The ID of the "More windows..." menu item is the next one after the last // child. const int wxID_MDI_MORE_WINDOWS = wxLAST_MDI_CHILD + 1; // The MDI "Window" menu label const char *WINDOW_MENU_LABEL = gettext_noop("&Window"); // --------------------------------------------------------------------------- // private functions // --------------------------------------------------------------------------- // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu // of the parent of win (which is supposed to be the MDI client window) void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow); // insert the window menu (subMenu) into menu just before "Help" submenu or at // the very end if not found void MDIInsertWindowMenu(wxWindow *win, WXHMENU hMenu, HMENU subMenu); // Remove the window menu void MDIRemoveWindowMenu(wxWindow *win, WXHMENU hMenu); // unpack the parameters of WM_MDIACTIVATE message void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam, WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact); // return the HMENU of the MDI menu // // this function works correctly even when we don't have a window menu and just // returns 0 then inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame) { wxMenu *menu = frame->GetWindowMenu(); return menu ? GetHmenuOf(menu) : 0; } } // anonymous namespace // =========================================================================== // implementation // =========================================================================== // --------------------------------------------------------------------------- // wxWin macros // --------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame) IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame) IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow) BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame) EVT_SIZE(wxMDIParentFrame::OnSize) EVT_ICONIZE(wxMDIParentFrame::OnIconized) EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged) #if wxUSE_MENUS EVT_MENU_RANGE(wxFIRST_MDI_CHILD, wxLAST_MDI_CHILD, wxMDIParentFrame::OnMDIChild) EVT_MENU_RANGE(wxID_MDI_WINDOW_FIRST, wxID_MDI_WINDOW_LAST, wxMDIParentFrame::OnMDICommand) #endif // wxUSE_MENUS END_EVENT_TABLE() BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame) EVT_IDLE(wxMDIChildFrame::OnIdle) END_EVENT_TABLE() BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow) EVT_SCROLL(wxMDIClientWindow::OnScroll) END_EVENT_TABLE() // =========================================================================== // wxMDIParentFrame: the frame which contains the client window which manages // the children // =========================================================================== void wxMDIParentFrame::Init() { #if wxUSE_MENUS && wxUSE_ACCEL // the default menu doesn't have any accelerators (even if we have it) m_accelWindowMenu = NULL; #endif // wxUSE_MENUS && wxUSE_ACCEL } bool wxMDIParentFrame::Create(wxWindow *parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name) { // this style can be used to prevent a window from having the standard MDI // "Window" menu if ( !(style & wxFRAME_NO_WINDOW_MENU) ) { // normal case: we have the window menu, so construct it m_windowMenu = new wxMenu; m_windowMenu->Append(wxID_MDI_WINDOW_CASCADE, _("&Cascade")); m_windowMenu->Append(wxID_MDI_WINDOW_TILE_HORZ, _("Tile &Horizontally")); m_windowMenu->Append(wxID_MDI_WINDOW_TILE_VERT, _("Tile &Vertically")); m_windowMenu->AppendSeparator(); m_windowMenu->Append(wxID_MDI_WINDOW_ARRANGE_ICONS, _("&Arrange Icons")); m_windowMenu->Append(wxID_MDI_WINDOW_NEXT, _("&Next")); m_windowMenu->Append(wxID_MDI_WINDOW_PREV, _("&Previous")); } if (!parent) wxTopLevelWindows.Append(this); SetName(name); m_windowStyle = style; if ( parent ) parent->AddChild(this); if ( id != wxID_ANY ) m_windowId = id; else m_windowId = NewControlId(); WXDWORD exflags; WXDWORD msflags = MSWGetCreateWindowFlags(&exflags); msflags &= ~WS_VSCROLL; msflags &= ~WS_HSCROLL; if ( !wxWindow::MSWCreate(wxApp::GetRegisteredClassName(wxT("wxMDIFrame")), title.t_str(), pos, size, msflags, exflags) ) { return false; } SetOwnBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE)); // unlike (almost?) all other windows, frames are created hidden m_isShown = false; return true; } wxMDIParentFrame::~wxMDIParentFrame() { // see comment in ~wxMDIChildFrame #if wxUSE_TOOLBAR m_frameToolBar = NULL; #endif #if wxUSE_STATUSBAR m_frameStatusBar = NULL; #endif // wxUSE_STATUSBAR #if wxUSE_MENUS && wxUSE_ACCEL delete m_accelWindowMenu; #endif // wxUSE_MENUS && wxUSE_ACCEL DestroyChildren(); // the MDI frame menubar is not automatically deleted by Windows unlike for // the normal frames if ( m_hMenu ) ::DestroyMenu((HMENU)m_hMenu); if ( m_clientWindow ) { if ( m_clientWindow->MSWGetOldWndProc() ) m_clientWindow->UnsubclassWin(); m_clientWindow->SetHWND(0); delete m_clientWindow; } } // ---------------------------------------------------------------------------- // wxMDIParentFrame child management // ---------------------------------------------------------------------------- wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const { HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIGETACTIVE, 0, 0L); if ( !hWnd ) return NULL; return static_cast(wxFindWinFromHandle(hWnd)); } int wxMDIParentFrame::GetChildFramesCount() const { int count = 0; for ( wxWindowList::const_iterator i = GetChildren().begin(); i != GetChildren().end(); ++i ) { if ( wxDynamicCast(*i, wxMDIChildFrame) ) count++; } return count; } #if wxUSE_MENUS void wxMDIParentFrame::AddMDIChild(wxMDIChildFrame * WXUNUSED(child)) { switch ( GetChildFramesCount() ) { case 1: // first MDI child was just added, we need to insert the window // menu now if we have it AddWindowMenu(); // and disable the items which can't be used until we have more // than one child UpdateWindowMenu(false); break; case 2: // second MDI child was added, enable the menu items which were // disabled because they didn't make sense for a single window UpdateWindowMenu(true); break; } } void wxMDIParentFrame::RemoveMDIChild(wxMDIChildFrame * WXUNUSED(child)) { switch ( GetChildFramesCount() ) { case 1: // last MDI child is being removed, remove the now unnecessary // window menu too RemoveWindowMenu(); // there is no need to call UpdateWindowMenu(true) here so this is // not quite symmetric to AddMDIChild() above break; case 2: // only one MDI child is going to remain, disable the menu commands // which don't make sense for a single child window UpdateWindowMenu(false); break; } } // ---------------------------------------------------------------------------- // wxMDIParentFrame window menu handling // ---------------------------------------------------------------------------- void wxMDIParentFrame::AddWindowMenu() { if ( m_windowMenu ) { // For correct handling of the events from this menu we also must // attach it to the menu bar. m_windowMenu->Attach(GetMenuBar()); MDIInsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this)); } } void wxMDIParentFrame::RemoveWindowMenu() { if ( m_windowMenu ) { MDIRemoveWindowMenu(GetClientWindow(), m_hMenu); m_windowMenu->Detach(); } } void wxMDIParentFrame::UpdateWindowMenu(bool enable) { if ( m_windowMenu ) { m_windowMenu->Enable(wxID_MDI_WINDOW_NEXT, enable); m_windowMenu->Enable(wxID_MDI_WINDOW_PREV, enable); } } #if wxUSE_MENUS_NATIVE void wxMDIParentFrame::InternalSetMenuBar() { if ( GetActiveChild() ) { AddWindowMenu(); } else // we don't have any MDI children yet { // wait until we do to add the window menu but do set the main menu for // now (this is done by AddWindowMenu() as a side effect) MDISetMenu(GetClientWindow(), (HMENU)m_hMenu, NULL); } } #endif // wxUSE_MENUS_NATIVE void wxMDIParentFrame::SetWindowMenu(wxMenu* menu) { if ( menu != m_windowMenu ) { // We may not be showing the window menu currently if we don't have any // children, and in this case we shouldn't remove/add it back right now. const bool hasWindowMenu = GetActiveChild() != NULL; if ( hasWindowMenu ) RemoveWindowMenu(); delete m_windowMenu; m_windowMenu = menu; if ( hasWindowMenu ) AddWindowMenu(); } #if wxUSE_ACCEL wxDELETE(m_accelWindowMenu); if ( menu && menu->HasAccels() ) m_accelWindowMenu = menu->CreateAccelTable(); #endif // wxUSE_ACCEL } // ---------------------------------------------------------------------------- // wxMDIParentFrame other menu-related stuff // ---------------------------------------------------------------------------- void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu) { wxMDIChildFrame *child = GetActiveChild(); if ( child ) { wxEvtHandler* source = child->GetEventHandler(); wxMenuBar* bar = child->GetMenuBar(); if (menu) { menu->UpdateUI(source); } else { if ( bar != NULL ) { int nCount = bar->GetMenuCount(); for (int n = 0; n < nCount; n++) bar->GetMenu(n)->UpdateUI(source); } } } else { wxFrameBase::DoMenuUpdates(menu); } } wxMenuItem *wxMDIParentFrame::FindItemInMenuBar(int menuId) const { // We must look in the child menu first: if it has an item with the same ID // as in our own menu bar, the child item should be used to determine // whether it's currently enabled. wxMenuItem *item = GetActiveChild() ? GetActiveChild()->FindItemInMenuBar(menuId) : NULL; if ( !item ) item = wxFrame::FindItemInMenuBar(menuId); if ( !item && m_windowMenu ) item = m_windowMenu->FindItem(menuId); return item; } WXHMENU wxMDIParentFrame::MSWGetActiveMenu() const { wxMDIChildFrame * const child = GetActiveChild(); if ( child ) { const WXHMENU hmenu = child->MSWGetActiveMenu(); if ( hmenu ) return hmenu; } return wxFrame::MSWGetActiveMenu(); } #endif // wxUSE_MENUS // ---------------------------------------------------------------------------- // wxMDIParentFrame event handling // ---------------------------------------------------------------------------- void wxMDIParentFrame::UpdateClientSize() { if ( GetClientWindow() ) { int width, height; GetClientSize(&width, &height); GetClientWindow()->SetSize(0, 0, width, height); } } void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event)) { UpdateClientSize(); // do not call event.Skip() here, it somehow messes up MDI client window } void wxMDIParentFrame::OnIconized(wxIconizeEvent& event) { event.Skip(); if ( !event.IsIconized() ) UpdateClientSize(); } // Responds to colour changes, and passes event on to children. void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event) { if ( m_clientWindow ) { m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE)); m_clientWindow->Refresh(); } event.Skip(); } WXHICON wxMDIParentFrame::GetDefaultIcon() const { // we don't have any standard icons (any more) return (WXHICON)0; } // --------------------------------------------------------------------------- // MDI operations // --------------------------------------------------------------------------- void wxMDIParentFrame::Cascade() { ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0); } void wxMDIParentFrame::Tile(wxOrientation orient) { wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL, wxT("invalid orientation value") ); ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, orient == wxHORIZONTAL ? MDITILE_HORIZONTAL : MDITILE_VERTICAL, 0); } void wxMDIParentFrame::ArrangeIcons() { ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0); } void wxMDIParentFrame::ActivateNext() { ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0); } void wxMDIParentFrame::ActivatePrevious() { ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1); } // --------------------------------------------------------------------------- // the MDI parent frame window proc // --------------------------------------------------------------------------- WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) { WXLRESULT rc = 0; bool processed = false; switch ( message ) { case WM_ACTIVATE: { WXWORD state, minimized; WXHWND hwnd; UnpackActivate(wParam, lParam, &state, &minimized, &hwnd); processed = HandleActivate(state, minimized != 0, hwnd); } break; case WM_COMMAND: // system messages such as SC_CLOSE are sent as WM_COMMANDs to the // parent MDI frame and we must let the DefFrameProc() have them // for these commands to work (without it, closing the maximized // MDI children doesn't work, for example) { WXWORD id, cmd; WXHWND hwnd; UnpackCommand(wParam, lParam, &id, &hwnd, &cmd); if ( id == wxID_MDI_MORE_WINDOWS || (cmd == 0 /* menu */ && id >= SC_SIZE /* first system menu command */) ) { MSWDefWindowProc(message, wParam, lParam); processed = true; } } break; case WM_CREATE: m_clientWindow = OnCreateClient(); // Uses own style for client style if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) ) { wxLogMessage(_("Failed to create MDI parent frame.")); rc = -1; } processed = true; break; } if ( !processed ) rc = wxFrame::MSWWindowProc(message, wParam, lParam); return rc; } bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate) { bool processed = false; if ( wxWindow::HandleActivate(state, minimized, activate) ) { // already processed processed = true; } // If this window is an MDI parent, we must also send an OnActivate message // to the current child. if ( GetActiveChild() && ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) ) { wxActivateEvent event(wxEVT_ACTIVATE, true, GetActiveChild()->GetId()); event.SetEventObject( GetActiveChild() ); if ( GetActiveChild()->HandleWindowEvent(event) ) processed = true; } return processed; } #if wxUSE_MENUS void wxMDIParentFrame::OnMDIChild(wxCommandEvent& event) { wxWindowList::compatibility_iterator node = GetChildren().GetFirst(); while ( node ) { wxWindow *child = node->GetData(); if ( child->GetHWND() ) { int childId = wxGetWindowId(child->GetHWND()); if ( childId == event.GetId() ) { wxStaticCast(child, wxMDIChildFrame)->Activate(); return; } } node = node->GetNext(); } wxFAIL_MSG( "unknown MDI child selected?" ); } void wxMDIParentFrame::OnMDICommand(wxCommandEvent& event) { WXWPARAM wParam = 0; WXLPARAM lParam = 0; int msg; switch ( event.GetId() ) { case wxID_MDI_WINDOW_CASCADE: msg = WM_MDICASCADE; wParam = MDITILE_SKIPDISABLED; break; case wxID_MDI_WINDOW_TILE_HORZ: wParam |= MDITILE_HORIZONTAL; // fall through case wxID_MDI_WINDOW_TILE_VERT: if ( !wParam ) wParam = MDITILE_VERTICAL; msg = WM_MDITILE; wParam |= MDITILE_SKIPDISABLED; break; case wxID_MDI_WINDOW_ARRANGE_ICONS: msg = WM_MDIICONARRANGE; break; case wxID_MDI_WINDOW_NEXT: msg = WM_MDINEXT; lParam = 0; // next child break; case wxID_MDI_WINDOW_PREV: msg = WM_MDINEXT; lParam = 1; // previous child break; default: wxFAIL_MSG( "unknown MDI command" ); return; } ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam); } #endif // wxUSE_MENUS WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) { WXHWND clientWnd; if ( GetClientWindow() ) clientWnd = GetClientWindow()->GetHWND(); else clientWnd = 0; return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam); } bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg) { MSG *pMsg = (MSG *)msg; // first let the current child get it wxMDIChildFrame * const child = GetActiveChild(); if ( child && child->MSWTranslateMessage(msg) ) { return true; } // then try out accelerator table (will also check the accelerators for the // normal menu items) if ( wxFrame::MSWTranslateMessage(msg) ) { return true; } #if wxUSE_MENUS && wxUSE_ACCEL // but it doesn't check for the (custom) accelerators of the window menu // items as it's not part of the menu bar as it's handled by Windows itself // so we need to do this explicitly if ( m_accelWindowMenu && m_accelWindowMenu->Translate(this, msg) ) return true; #endif // wxUSE_MENUS && wxUSE_ACCEL // finally, check for MDI specific built-in accelerators if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN ) { if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg)) return true; } return false; } // =========================================================================== // wxMDIChildFrame // =========================================================================== void wxMDIChildFrame::Init() { m_needsResize = true; m_needsInitialShow = true; } bool wxMDIChildFrame::Create(wxMDIParentFrame *parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name) { m_mdiParent = parent; SetName(name); if ( id != wxID_ANY ) m_windowId = id; else m_windowId = NewControlId(); if ( parent ) { parent->AddChild(this); } int x = pos.x; int y = pos.y; int width = size.x; int height = size.y; MDICREATESTRUCT mcs; wxString className = wxApp::GetRegisteredClassName(wxT("wxMDIChildFrame"), COLOR_WINDOW); if ( !(style & wxFULL_REPAINT_ON_RESIZE) ) className += wxApp::GetNoRedrawClassSuffix(); mcs.szClass = className.t_str(); mcs.szTitle = title.t_str(); mcs.hOwner = wxGetInstance(); if (x != wxDefaultCoord) mcs.x = x; else mcs.x = CW_USEDEFAULT; if (y != wxDefaultCoord) mcs.y = y; else mcs.y = CW_USEDEFAULT; if (width != wxDefaultCoord) mcs.cx = width; else mcs.cx = CW_USEDEFAULT; if (height != wxDefaultCoord) mcs.cy = height; else mcs.cy = CW_USEDEFAULT; DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN; if (style & wxMINIMIZE_BOX) msflags |= WS_MINIMIZEBOX; if (style & wxMAXIMIZE_BOX) msflags |= WS_MAXIMIZEBOX; if (style & wxRESIZE_BORDER) msflags |= WS_THICKFRAME; if (style & wxSYSTEM_MENU) msflags |= WS_SYSMENU; if ((style & wxMINIMIZE) || (style & wxICONIZE)) msflags |= WS_MINIMIZE; if (style & wxMAXIMIZE) msflags |= WS_MAXIMIZE; if (style & wxCAPTION) msflags |= WS_CAPTION; mcs.style = msflags; mcs.lParam = 0; wxWindowCreationHook hook(this); m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDICREATE, 0, (LPARAM)&mcs); if ( !m_hWnd ) { wxLogLastError(wxT("WM_MDICREATE")); return false; } SubclassWin(m_hWnd); parent->AddMDIChild(this); return true; } wxMDIChildFrame::~wxMDIChildFrame() { // if we hadn't been created, there is nothing to destroy if ( !m_hWnd ) return; GetMDIParent()->RemoveMDIChild(this); // will be destroyed by DestroyChildren() but reset them before calling it // to avoid using dangling pointers if a callback comes in the meanwhile #if wxUSE_TOOLBAR m_frameToolBar = NULL; #endif #if wxUSE_STATUSBAR m_frameStatusBar = NULL; #endif // wxUSE_STATUSBAR DestroyChildren(); MDIRemoveWindowMenu(NULL, m_hMenu); MSWDestroyWindow(); } bool wxMDIChildFrame::Show(bool show) { m_needsInitialShow = false; if (!wxFrame::Show(show)) return false; // KH: Without this call, new MDI children do not become active. // This was added here after the same BringWindowToTop call was // removed from wxTopLevelWindow::Show (November 2005) if ( show ) ::BringWindowToTop(GetHwnd()); // we need to refresh the MDI frame window menu to include (or exclude if // we've been hidden) this frame wxMDIParentFrame * const parent = GetMDIParent(); MDISetMenu(parent->GetClientWindow(), NULL, NULL); return true; } void wxMDIChildFrame::DoSetSize(int x, int y, int width, int height, int sizeFlags) { // we need to disable client area origin adjustments used for the child // windows for the frame itself wxMDIChildFrameBase::DoSetSize(x, y, width, height, sizeFlags); } // Set the client size (i.e. leave the calculation of borders etc. // to wxWidgets) void wxMDIChildFrame::DoSetClientSize(int width, int height) { HWND hWnd = GetHwnd(); RECT rect; ::GetClientRect(hWnd, &rect); RECT rect2; GetWindowRect(hWnd, &rect2); // Find the difference between the entire window (title bar and all) // and the client area; add this to the new client size to move the // window int actual_width = rect2.right - rect2.left - rect.right + width; int actual_height = rect2.bottom - rect2.top - rect.bottom + height; #if wxUSE_STATUSBAR if (GetStatusBar() && GetStatusBar()->IsShown()) { int sx, sy; GetStatusBar()->GetSize(&sx, &sy); actual_height += sy; } #endif // wxUSE_STATUSBAR POINT point; point.x = rect2.left; point.y = rect2.top; // If there's an MDI parent, must subtract the parent's top left corner // since MoveWindow moves relative to the parent wxMDIParentFrame * const mdiParent = GetMDIParent(); ::ScreenToClient(GetHwndOf(mdiParent->GetClientWindow()), &point); MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true); wxSize size(width, height); wxSizeEvent event(size, m_windowId); event.SetEventObject( this ); HandleWindowEvent(event); } // Unlike other wxTopLevelWindowBase, the mdi child's "GetPosition" is not the // same as its GetScreenPosition void wxMDIChildFrame::DoGetScreenPosition(int *x, int *y) const { HWND hWnd = GetHwnd(); RECT rect; ::GetWindowRect(hWnd, &rect); if (x) *x = rect.left; if (y) *y = rect.top; } void wxMDIChildFrame::DoGetPosition(int *x, int *y) const { RECT rect; GetWindowRect(GetHwnd(), &rect); POINT point; point.x = rect.left; point.y = rect.top; // Since we now have the absolute screen coords, // if there's a parent we must subtract its top left corner wxMDIParentFrame * const mdiParent = GetMDIParent(); ::ScreenToClient(GetHwndOf(mdiParent->GetClientWindow()), &point); if (x) *x = point.x; if (y) *y = point.y; } void wxMDIChildFrame::InternalSetMenuBar() { wxMDIParentFrame * const parent = GetMDIParent(); MDIInsertWindowMenu(parent->GetClientWindow(), m_hMenu, GetMDIWindowMenu(parent)); } void wxMDIChildFrame::DetachMenuBar() { MDIRemoveWindowMenu(NULL, m_hMenu); wxFrame::DetachMenuBar(); } WXHICON wxMDIChildFrame::GetDefaultIcon() const { // we don't have any standard icons (any more) return (WXHICON)0; } // --------------------------------------------------------------------------- // MDI operations // --------------------------------------------------------------------------- void wxMDIChildFrame::Maximize(bool maximize) { wxMDIParentFrame * const parent = GetMDIParent(); if ( parent && parent->GetClientWindow() ) { ::SendMessage(GetWinHwnd(parent->GetClientWindow()), maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE, (WPARAM)GetHwnd(), 0); } } void wxMDIChildFrame::Restore() { wxMDIParentFrame * const parent = GetMDIParent(); if ( parent && parent->GetClientWindow() ) { ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE, (WPARAM) GetHwnd(), 0); } } void wxMDIChildFrame::Activate() { wxMDIParentFrame * const parent = GetMDIParent(); if ( parent && parent->GetClientWindow() ) { // Activating an iconized MDI frame doesn't do anything, so restore it // first to really present it to the user. if ( IsIconized() ) Restore(); ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE, (WPARAM) GetHwnd(), 0); } } // --------------------------------------------------------------------------- // MDI window proc and message handlers // --------------------------------------------------------------------------- WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) { WXLRESULT rc = 0; bool processed = false; switch ( message ) { case WM_GETMINMAXINFO: processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam); break; case WM_MDIACTIVATE: { WXWORD act; WXHWND hwndAct, hwndDeact; UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact); processed = HandleMDIActivate(act, hwndAct, hwndDeact); } // fall through case WM_MOVE: // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client // scrollbars if necessary // fall through case WM_SIZE: // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird // things happen MSWDefWindowProc(message, wParam, lParam); break; case WM_WINDOWPOSCHANGING: processed = HandleWindowPosChanging((LPWINDOWPOS)lParam); break; } if ( !processed ) rc = wxFrame::MSWWindowProc(message, wParam, lParam); return rc; } bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate), WXHWND hwndAct, WXHWND hwndDeact) { wxMDIParentFrame * const parent = GetMDIParent(); WXHMENU hMenuToSet = 0; bool activated; if ( m_hWnd == hwndAct ) { activated = true; parent->SetActiveChild(this); WXHMENU hMenuChild = m_hMenu; if ( hMenuChild ) hMenuToSet = hMenuChild; } else if ( m_hWnd == hwndDeact ) { wxASSERT_MSG( parent->GetActiveChild() == this, wxT("can't deactivate MDI child which wasn't active!") ); activated = false; parent->SetActiveChild(NULL); WXHMENU hMenuParent = parent->m_hMenu; // activate the parent menu only when there is no other child // that has been activated if ( hMenuParent && !hwndAct ) hMenuToSet = hMenuParent; } else { // we have nothing to do with it return false; } if ( hMenuToSet ) { MDISetMenu(parent->GetClientWindow(), (HMENU)hMenuToSet, GetMDIWindowMenu(parent)); } wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId); event.SetEventObject( this ); ResetWindowStyle(NULL); return HandleWindowEvent(event); } bool wxMDIChildFrame::HandleWindowPosChanging(void *pos) { WINDOWPOS *lpPos = (WINDOWPOS *)pos; if (!(lpPos->flags & SWP_NOSIZE)) { RECT rectClient; DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE); DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE); if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE)) { ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle); lpPos->x = rectClient.left; lpPos->y = rectClient.top; lpPos->cx = rectClient.right - rectClient.left; lpPos->cy = rectClient.bottom - rectClient.top; } } return false; } bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo) { MINMAXINFO *info = (MINMAXINFO *)mmInfo; // let the default window proc calculate the size of MDI children // frames because it is based on the size of the MDI client window, // not on the values specified in wxWindow m_max variables bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0; int minWidth = GetMinWidth(), minHeight = GetMinHeight(); // but allow GetSizeHints() to set the min size if ( minWidth != wxDefaultCoord ) { info->ptMinTrackSize.x = minWidth; processed = true; } if ( minHeight != wxDefaultCoord ) { info->ptMinTrackSize.y = minHeight; processed = true; } return processed; } // --------------------------------------------------------------------------- // MDI specific message translation/preprocessing // --------------------------------------------------------------------------- WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) { return DefMDIChildProc(GetHwnd(), (UINT)message, (WPARAM)wParam, (LPARAM)lParam); } bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg) { // we must pass the parent frame to ::TranslateAccelerator(), otherwise it // doesn't do its job correctly for MDI child menus return MSWDoTranslateMessage(GetMDIParent(), msg); } // --------------------------------------------------------------------------- // misc // --------------------------------------------------------------------------- void wxMDIChildFrame::MSWDestroyWindow() { wxMDIParentFrame * const parent = GetMDIParent(); // Must make sure this handle is invalidated (set to NULL) since all sorts // of things could happen after the child client is destroyed, but before // the wxFrame is destroyed. HWND oldHandle = (HWND)GetHWND(); SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY, (WPARAM)oldHandle, 0); if (parent->GetActiveChild() == NULL) ResetWindowStyle(NULL); if (m_hMenu) { ::DestroyMenu((HMENU) m_hMenu); m_hMenu = 0; } wxRemoveHandleAssociation(this); m_hWnd = 0; } // Change the client window's extended style so we don't get a client edge // style when a child is maximised (a double border looks silly.) bool wxMDIChildFrame::ResetWindowStyle(void *vrect) { RECT *rect = (RECT *)vrect; wxMDIParentFrame * const pFrameWnd = GetMDIParent(); wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild(); if (!pChild || (pChild == this)) { HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow()); DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE); // we want to test whether there is a maximized child, so just set // dwThisStyle to 0 if there is no child at all DWORD dwThisStyle = pChild ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0; DWORD dwNewStyle = dwStyle; if ( dwThisStyle & WS_MAXIMIZE ) dwNewStyle &= ~(WS_EX_CLIENTEDGE); else dwNewStyle |= WS_EX_CLIENTEDGE; if (dwStyle != dwNewStyle) { // force update of everything ::RedrawWindow(hwndClient, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN); ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle); ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0, SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOCOPYBITS); if (rect) ::GetClientRect(hwndClient, rect); return true; } } return false; } // =========================================================================== // wxMDIClientWindow: the window of predefined (by Windows) class which // contains the child frames // =========================================================================== bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style) { m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE); CLIENTCREATESTRUCT ccs; m_windowStyle = style; m_parent = parent; ccs.hWindowMenu = GetMDIWindowMenu(parent); ccs.idFirstChild = wxFIRST_MDI_CHILD; DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS; if ( style & wxHSCROLL ) msStyle |= WS_HSCROLL; if ( style & wxVSCROLL ) msStyle |= WS_VSCROLL; DWORD exStyle = WS_EX_CLIENTEDGE; wxWindowCreationHook hook(this); m_hWnd = (WXHWND)::CreateWindowEx ( exStyle, wxT("MDICLIENT"), NULL, msStyle, 0, 0, 0, 0, GetWinHwnd(parent), NULL, wxGetInstance(), (LPSTR)(LPCLIENTCREATESTRUCT)&ccs); if ( !m_hWnd ) { wxLogLastError(wxT("CreateWindowEx(MDI client)")); return false; } SubclassWin(m_hWnd); return true; } // Explicitly call default scroll behaviour void wxMDIClientWindow::OnScroll(wxScrollEvent& event) { // Note: for client windows, the scroll position is not set in // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what // scroll position we're at. // This makes it hard to paint patterns or bitmaps in the background, // and have the client area scrollable as well. if ( event.GetOrientation() == wxHORIZONTAL ) m_scrollX = event.GetPosition(); // Always returns zero! else m_scrollY = event.GetPosition(); // Always returns zero! event.Skip(); } void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags) { // Try to fix a problem whereby if you show an MDI child frame, then reposition the // client area, you can end up with a non-refreshed portion in the client window // (see OGL studio sample). So check if the position is changed and if so, // redraw the MDI child frames. const wxPoint oldPos = GetPosition(); wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE); const wxPoint newPos = GetPosition(); if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y)) { if (GetParent()) { wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst(); while (node) { wxWindow *child = node->GetData(); if (wxDynamicCast(child, wxMDIChildFrame)) { ::RedrawWindow(GetHwndOf(child), NULL, NULL, RDW_FRAME | RDW_ALLCHILDREN | RDW_INVALIDATE); } node = node->GetNext(); } } } } void wxMDIChildFrame::OnIdle(wxIdleEvent& event) { // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted // in flicker e.g. when the frame contained controls with non-trivial // layout. Since 2.5.3, the frame is created hidden as all other top level // windows. In order to maintain backward compatibility, the frame is shown // in OnIdle, unless Show(false) was called by the programmer before. if ( m_needsInitialShow ) { Show(true); } // MDI child frames get their WM_SIZE when they're constructed but at this // moment they don't have any children yet so all child windows will be // positioned incorrectly when they are added later - to fix this, we // generate an artificial size event here if ( m_needsResize ) { m_needsResize = false; // avoid any possibility of recursion SendSizeEvent(); } event.Skip(); } // --------------------------------------------------------------------------- // private helper functions // --------------------------------------------------------------------------- namespace { void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow) { if ( hmenuFrame || hmenuWindow ) { if ( !::SendMessage(GetWinHwnd(win), WM_MDISETMENU, (WPARAM)hmenuFrame, (LPARAM)hmenuWindow) ) { DWORD err = ::GetLastError(); if ( err ) { wxLogApiError(wxT("SendMessage(WM_MDISETMENU)"), err); } } } // update menu bar of the parent window wxWindow *parent = win->GetParent(); wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") ); ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L); ::DrawMenuBar(GetWinHwnd(parent)); } void MDIInsertWindowMenu(wxWindow *win, WXHMENU hMenu, HMENU menuWin) { HMENU hmenu = (HMENU)hMenu; if ( menuWin ) { // Try to insert Window menu in front of Help, otherwise append it. int N = GetMenuItemCount(hmenu); bool inserted = false; for ( int i = 0; i < N; i++ ) { wxChar buf[256]; if ( !::GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) ) { wxLogLastError(wxT("GetMenuString")); continue; } const wxString label = wxStripMenuCodes(buf); if ( label == wxGetStockLabel(wxID_HELP, wxSTOCK_NOFLAGS) ) { inserted = true; ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING, (UINT_PTR)menuWin, wxString(wxGetTranslation(WINDOW_MENU_LABEL)).t_str()); break; } } if ( !inserted ) { ::AppendMenu(hmenu, MF_POPUP, (UINT_PTR)menuWin, wxString(wxGetTranslation(WINDOW_MENU_LABEL)).t_str()); } } MDISetMenu(win, hmenu, menuWin); } void MDIRemoveWindowMenu(wxWindow *win, WXHMENU hMenu) { HMENU hmenu = (HMENU)hMenu; if ( hmenu ) { wxChar buf[1024]; int N = ::GetMenuItemCount(hmenu); for ( int i = 0; i < N; i++ ) { if ( !::GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) ) { // Ignore successful read of menu string with length 0 which // occurs, for example, for a maximized MDI child system menu if ( ::GetLastError() != 0 ) { wxLogLastError(wxT("GetMenuString")); } continue; } if ( wxStrcmp(buf, wxGetTranslation(WINDOW_MENU_LABEL)) == 0 ) { if ( !::RemoveMenu(hmenu, i, MF_BYPOSITION) ) { wxLogLastError(wxT("RemoveMenu")); } break; } } } if ( win ) { // we don't change the windows menu, but we update the main one MDISetMenu(win, hmenu, NULL); } } void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam, WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact) { *activate = true; *hwndAct = (WXHWND)lParam; *hwndDeact = (WXHWND)wParam; } } // anonymous namespace #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)