Adds padding bytes at the ends of scanlines.

procedure AddPadBytes(DataIn: Pointer; 
                      DataOut: Pointer; 
                      Width: LongInt; 
                      Height: LongInt; 
                      Bpp: LongInt; 
                      WidthBytes: LongInt);

ImagingFormats (at line 129)

Bpp is the number of bytes per pixel of source and WidthBytes is the number of bytes per scanlines of dest.