ClosePicture
ClosePicture stops recording drawing information into a picture. It must be called exactly once, sometime after starting a picture definition via
Notes: This shows the pen again, to balance the HidePen call made by ClosePicture finalizes the picture definition. If you just want to "turn off" picture recording temporarily, you can save the current value in the
picSave field of the current GrafPort structure, then set the field to 0 (NIL). To resume recording, restore the previous value of picSave.
After closing, you can use KillPicture to free up the memory occupied by the picture definition.