support alpha in color dialog, see #14127

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73640 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/osx/carbon/colordlgosx.mm b/src/osx/carbon/colordlgosx.mm
index a8649d14c7c2a704f632756a9738308bd8c5610c..4f12861d3d571d0f2b934bede481e7a80494e62f 100644 (file)
--- a/src/osx/carbon/colordlgosx.mm
+++ b/src/osx/carbon/colordlgosx.mm
@@ -106,6 +106,7 @@ bool wxColourDialog::Create(wxWindow *parent, wxColourData *data)
     NSAutoreleasePool *thePool;
     thePool = [[NSAutoreleasePool alloc] init];
 
+    [[NSColorPanel sharedColorPanel] setShowsAlpha:YES];
     if(m_colourData.GetColour().IsOk())
         [[NSColorPanel sharedColorPanel] setColor:
             [NSColor colorWithCalibratedRed:(CGFloat) (m_colourData.GetColour().Red() / 255.0)