From a7cfe08aff22afc81e29fc93018cff111f59d129 Mon Sep 17 00:00:00 2001
From: Paul Cornett <paulcor@bullseye.com>
Date: Thu, 24 Aug 2006 04:41:45 +0000
Subject: [PATCH] allow white as mask color when creating mask from mono bitmap

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40783 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/gtk/bitmap.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp
index c5ebe0fabd..d6d039b893 100644
--- a/src/gtk/bitmap.cpp
+++ b/src/gtk/bitmap.cpp
@@ -109,8 +109,11 @@ bool wxMask::Create( const wxBitmap& bitmap,
     {
         GdkImage* image = gdk_drawable_get_image(bitmap.GetPixmap(), 0, 0, w, h);
         GdkColormap* colormap = gdk_image_get_colormap(image);
-        guint32 mask_pixel = 1;
-        if (colormap != NULL)
+        guint32 mask_pixel;
+        if (colormap == NULL)
+            // mono bitmap, white is pixel value 0
+            mask_pixel = guint32(colour.Red() != 255 || colour.Green() != 255 || colour.Blue() != 255);
+        else
         {
             wxColor c(colour);
             c.CalcPixel(colormap);
-- 
2.45.2