Initial support for EVT_ERASE_BACKGROUND for OS X Cocoa.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58796 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@@ -12,6 +12,7 @@
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#include "wx/wxprec.h"
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#ifndef WX_PRECOMP
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#include "wx/dcclient.h"
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#include "wx/nonownedwnd.h"
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#include "wx/log.h"
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#endif
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@@ -754,6 +755,20 @@ void wxWidgetCocoaImpl::drawRect(void* rect, WXWidget slf, void *_cmd)
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wxpeer->GetUpdateRegion() = updateRgn;
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wxpeer->MacSetCGContextRef( context );
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// first send an erase event to the entire update area
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// for the toplevel window this really is the entire area
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// for all the others only their client area, otherwise they
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// might be drawing with full alpha and eg put blue into
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// the grow-box area of a scrolled window (scroll sample)
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wxDC* dc = new wxWindowDC(wxpeer);
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dc->SetDeviceClippingRegion(updateRgn);
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wxEraseEvent eevent( wxpeer->GetId(), dc );
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eevent.SetEventObject( wxpeer );
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wxpeer->HandleWindowEvent( eevent );
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delete dc ;
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wxPaintEvent event;
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event.SetTimestamp(0); // todo
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event.SetEventObject(wxpeer);
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