use AlphaBlt() when blitting to a bitmap with alpha channel too (patch 991166)

[wxWidgets.git] / src / msw / mdi.cpp

diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 6b7b5d50a8c3f197117c8806b051a9c9fff858f3..3d2ac43e30e6ace14f964ac0fe3bd28f2854d64c 100644 (file)
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -203,7 +203,7 @@ bool wxMDIParentFrame::Create(wxWindow *parent,
   if ( parent )
       parent->AddChild(this);
 
-  if ( id > -1 )
+  if ( id != wxID_ANY )
     m_windowId = id;
   else
     m_windowId = NewControlId();
@@ -300,6 +300,34 @@ void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
     }
 }
 
+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);
+    }
+}
+
 void wxMDIParentFrame::OnSize(wxSizeEvent&)
 {
     if ( GetClientWindow() )
@@ -642,6 +670,7 @@ bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 void wxMDIChildFrame::Init()
 {
     m_needsResize = true;
+    m_needsInitialShow = true;
 }
 
 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
@@ -653,9 +682,8 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
                              const wxString& name)
 {
   SetName(name);
-  wxWindowBase::Show(true); // MDI child frame starts off shown
 
-  if ( id > -1 )
+  if ( id != wxID_ANY )
     m_windowId = id;
   else
     m_windowId = (int)NewControlId();
@@ -677,27 +705,27 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
                     : wxMDIChildFrameClassNameNoRedraw;
   mcs.szTitle = title;
   mcs.hOwner = wxGetInstance();
-  if (x > -1)
+  if (x != wxDefaultCoord)
       mcs.x = x;
   else
       mcs.x = CW_USEDEFAULT;
 
-  if (y > -1)
+  if (y != wxDefaultCoord)
       mcs.y = y;
   else
       mcs.y = CW_USEDEFAULT;
 
-  if (width > -1)
+  if (width != wxDefaultCoord)
       mcs.cx = width;
   else
       mcs.cx = CW_USEDEFAULT;
 
-  if (height > -1)
+  if (height != wxDefaultCoord)
       mcs.cy = height;
   else
       mcs.cy = CW_USEDEFAULT;
 
-  DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN | WS_VISIBLE ;
+  DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
   if (style & wxMINIMIZE_BOX)
     msflags |= WS_MINIMIZEBOX;
   if (style & wxMAXIMIZE_BOX)
@@ -745,6 +773,12 @@ wxMDIChildFrame::~wxMDIChildFrame()
     MSWDestroyWindow();
 }
 
+bool wxMDIChildFrame::Show(bool show)
+{
+    m_needsInitialShow = false;
+    return wxFrame::Show(show);
+}
+
 // Set the client size (i.e. leave the calculation of borders etc.
 // to wxWidgets)
 void wxMDIChildFrame::DoSetClientSize(int width, int height)
@@ -1275,6 +1309,16 @@ void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeF
 
 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