Use Cairo for wxGraphicsContext in wxX11.

[wxWidgets.git] / interface / wx / image.h

diff --git a/interface/wx/image.h b/interface/wx/image.h
index 04772440941a910b95fd996ccf9d00390fa10004..b083796d72434ae5719689c26732d057983ffb06 100644 (file)
--- a/interface/wx/image.h
+++ b/interface/wx/image.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxImageHandler and wxImage
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -815,7 +815,7 @@ public:
         FindFirstUnusedColour() by this function, see the overload below if you
         this is not appropriate.
 
-        @return @false if FindFirstUnusedColour returns @false, @true otherwise.
+        @return Returns @true on success, @false on error.
     */
     bool ConvertAlphaToMask(unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
 
@@ -841,8 +841,9 @@ public:
             are set. Pixels with the alpha values above the threshold are
             considered to be opaque.
 
+        @return Returns @true on success, @false on error.
      */
-    void ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb,
+    bool ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb,
                             unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
 
     /**
@@ -1396,6 +1397,16 @@ public:
     */
     void SetAlpha(int x, int y, unsigned char alpha);
 
+    /**
+        Removes the alpha channel from the image.
+
+        This function should only be called if the image has alpha channel data,
+        use HasAlpha() to check for this.
+
+        @since 2.9.1
+    */
+    void ClearAlpha();
+
     /**
         Sets the image data without performing checks.