TGopBitBltTransparent Class Reference
#include
<graphicsaccelerator.h>
| class TGopBitBltTransparent : public TGraphicsOperation |
Detailed Description
An accelerated graphics operation that copies a rectangular region of one bitmap into another, with some transparent pixels in the bitmap.
The data members are all initialised on construction. Objects of this class can be passed to a graphics accelerator's Operation() function either individually, or in a buffer.
See also: TGraphicsAcceleratorCaps::iTransparency TGopTransparency
Member Attribute Documentation
iDestination
The destination for the top left hand corner of the portion of the bitmap.
iSourceBitmap
A handle to the source bitmap, and other information needed to draw it.
iSourceRect
A rectangle defining all or a part of the bitmap to be copied.
iTransparency
A specification for which pixels should be treated as transparent.
Constructor & Destructor Documentation
TGopBitBltTransparent ( const TPoint &, TAcceleratedBitmapSpec, TRect &, TGopTransparency )
Constructor with a destination, a handle to the source bitmap, a rectangle and a specification for which pixels should be treated as transparent.
| Parameter | Description | | aDestination | The destination for the top left hand corner of the portion of the source bitmap. |
| aSourceBitmap | A handle to the source bitmap, and other information needed to draw it. |
| aSourceRect | A rectangle within the source bitmap. Its coordinates are relative to the top left of the bitmap. Defines the part of the source bitmap to be copied. |
| aTransparency | A specification for which pixels in the source bitmap should be treated as transparent. |