`TFPReaderBMP`
pt		SetupRead
pt		CountBits
pt		ShiftCount
pt		ExpandColor
pt		ExpandRLE8ScanLine
pt		ExpandRLE4ScanLine
pt		ReadScanLine
pt		WriteScanLine
pt		InternalRead
pt		InternalCheck
		Create
		Destroy

`TFPCustomImageReader`
pt		InternalRead
pt		InternalCheck
pt		InternalSize
		Create
		ImageRead
		CheckContents
		ImageSize

`TFPCustomImageHandler`
pt		Progress
		Create