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Disable "Use wxDC" menu item if displayed screen requires wxGraphicContext (drawing sample).

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To display "show alpha" and "show graphics" screens there is necessary to use wxGraphicContext and switching to wxDC should blocked in this case.
This commit is contained in:
Artur Wieczorek 2015-12-26 17:44:28 +01:00
parent 3fb70061ae
commit 537fcac633
1 changed files with 8 additions and 2 deletions
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10
samples/drawing/drawing.cpp
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@ -257,7 +257,7 @@ public:
m_colourBackground;
wxBrush m_backgroundBrush;
MyCanvas *m_canvas;
wxMenuItem *m_menuItemUseDC;
private:
// any class wishing to process wxWidgets events must use this macro
wxDECLARE_EVENT_TABLE();
@ -1901,7 +1901,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
wxMenu *menuFile = new wxMenu;
#if wxUSE_GRAPHICS_CONTEXT
menuFile->AppendCheckItem(File_GC_Default, "Use default wx&GraphicContext\tCtrl-Y");
menuFile->AppendRadioItem(File_DC, "Use wx&DC\tShift-Ctrl-Y");
m_menuItemUseDC = menuFile->AppendRadioItem(File_DC, "Use wx&DC\tShift-Ctrl-Y");
#if wxUSE_CAIRO
menuFile->AppendRadioItem(File_GC_Cairo, "Use &Cairo\tCtrl-O");
#endif // wxUSE_CAIRO
@ -2071,6 +2071,12 @@ void MyFrame::OnShow(wxCommandEvent& event)
{
if ( !m_canvas->HasRenderer() )
m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetDefaultRenderer());
// Disable selecting wxDC, if necessary.
m_menuItemUseDC->Enable(!m_canvas->HasRenderer());
}
else
{
m_menuItemUseDC->Enable(true);
}
#endif // wxUSE_GRAPHICS_CONTEXT