TBitmapImage = class(TSharedImage)
class PASCALIMPLEMENTATION TBitmapImage : public TSharedImage
TBitmapImage is the internal representation of the bitmap image for a TBitmap object.
TBitmapImage is used only for internal implementation of the TBitmap component that is defined in the Graphics unit. It represents the internal image of the bitmap. All of the data and methods introduced in TBitmapImage are private. They contain information about the specific Windows bitmap resource, including pointers to the standard HBITMAP structures defined by Windows. TBitmapImage is referenced in the constructor of the TBitmap object when the bitmap image is created.