void wxMDIChildFrame::Init()
{
m_needsResize = true;
+ m_needsInitialShow = true;
}
bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
const wxString& name)
{
SetName(name);
- wxWindowBase::Show(true); // MDI child frame starts off shown
if ( id != wxID_ANY )
m_windowId = id;
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)
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)
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