From 0c543b7a1966c0f6321c5a1ba13874e1db12c10c Mon Sep 17 00:00:00 2001 From: Vadim Zeitlin Date: Tue, 4 Mar 2003 02:10:27 +0000 Subject: [PATCH] don't erase the background to see the transparent images better git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19458 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- samples/image/image.cpp | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/samples/image/image.cpp b/samples/image/image.cpp index a74abe5ba2..ef9f191417 100644 --- a/samples/image/image.cpp +++ b/samples/image/image.cpp @@ -135,11 +135,15 @@ public: SetClientSize(bitmap.GetWidth(), bitmap.GetHeight()); } + void OnEraseBackground(wxEraseEvent& WXUNUSED(event)) + { + // do nothing here to be able to see how transparent images are shown + } + void OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc( this ); - //TRUE for masked images - dc.DrawBitmap( m_bitmap, 0, 0, TRUE ); + dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ ); } void OnSave(wxMouseEvent& WXUNUSED(event)) @@ -237,8 +241,9 @@ IMPLEMENT_APP(MyApp) IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) BEGIN_EVENT_TABLE(MyImageFrame, wxFrame) - EVT_PAINT(MyImageFrame::OnPaint) - EVT_LEFT_DCLICK(MyImageFrame::OnSave) + EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground) + EVT_PAINT(MyImageFrame::OnPaint) + EVT_LEFT_DCLICK(MyImageFrame::OnSave) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) -- 2.45.2