tbitmap
create
savetoimage
loadfromimage
assign
change
beginupdate
endupdate
loaddata
hasimage
paint
init
compressdata
decompressdata
tsimplebitmap
destroy
copyhandle
releasehandle
acquirehandle
assignnegative
clear
freecanvas
canvasallocated
copyarea
isempty
tnullinterfacedpersistent
tvirtualpersistent