RAD Studio VCL Reference
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GraphUtil.DrawTransparentBitmap Function
GraphUtil | Description | See Also
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Draws a transparent bitmap.

Pascal
procedure DrawTransparentBitmap(Source: TBitmap; Destination: TCanvas; DestRect: TRect; Opacity: Byte); overload;
procedure DrawTransparentBitmap(Source: TBitmap; SourceRect: TRect; Destination: TCanvas; DestRect: TRect; Opacity: Byte); overload;
C++
DrawTransparentBitmap(TBitmap Source, TCanvas Destination, TRect DestRect, Byte Opacity);
DrawTransparentBitmap(TBitmap Source, TRect SourceRect, TCanvas Destination, TRect DestRect, Byte Opacity);
File
Description

The difference between the first and second form of DrawTransparentBitmap is that the second one allows an extra parameter, the specification of the source rectangle.  

Source represents the source bitmap.  

SourceRect, only present in the second form, represents the source rectangle.  

Destination represents the TCanvas used for drawing.  

DestRect represents the destination rectangle.  

Opacity represents the alpha(opacity) value. 

 

See Also
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