DK11 for Delphi | GisTypesUI.TGIS_Bitmap.MakeTransparent | Constructors | Methods | Properties
Make bitmap transparent by replacing all pixels with same color as left-up corner with TGIS_Color.None color (full ARGB transparency)
// Delphi public procedure MakeTransparent;
// C++ Builder public: void MakeTransparent(void);