Fix changing mask on bitmap with alpha on GTK2

See #18508
2019-09-18 22:45:47 -07:00
parent de5f8c69e5
commit 6d44e9a1c6
1 changed files with 7 additions and 0 deletions
--- a/src/gtk/bitmap.cpp
+++ b/src/gtk/bitmap.cpp
@@ -960,6 +960,13 @@ void wxBitmap::SetMask( wxMask *mask )
    AllocExclusive();
    delete M_BMPDATA->m_mask;
    M_BMPDATA->m_mask = mask;
+#ifndef __WXGTK3__
+    if (M_BMPDATA->m_pixbufMask)
+    {
+        g_object_unref(M_BMPDATA->m_pixbufMask);
+        M_BMPDATA->m_pixbufMask = NULL;
+    }
+#endif
 }

 bool wxBitmap::CopyFromIcon(const wxIcon& icon)