`tfacebitmap`
		pos
		center
pl		x
pl		y

`tmaskedbitmap`
		mask
		maskkind
		masked
		graymask
		colormask
		maskcolorforeground
		maskcolorbackground
		mask_pos
		origformatdata
pl		transparentcolor
pl		options
pl		source
pl		mask_source
pl		mask_x
pl		mask_y
pl		origformat
pl	ro	colorforeground
pl	ro	colorbackground
pl	ro	alignment
pl	ro	opacity

`tbitmap`
		pixel
		pixels
	ro	scanline
	ro	scanhigh
	ro	scanlinestep
		colorforeground
		colorbackground
		alignment
		opacity
		onchange

`tsimplebitmap`
		handle
		kind
	ro	canvas
		size
		width
		height

`tnullinterfacedpersistent`

`tvirtualpersistent`