ClosePort

Release memory used by an open GrafPort

#include <Quickdraw.h> Quickdraw

void ClosePort(whichPort );

GrafPtr whichPort ; pointer to a GrafPort structure

ClosePort releases memory used in the visRgn and clipRgn of a GrafPort and

deactivates the port.

whichPort is is a pointer to a 108-byte GrafPort structure.

Notes: ClosePort is seldom used since the Window Manager CloseWindow and

DisposeWindow functions do it automatically.

If you used NewPtr to allocate memory for the GrafPort itself, you are

responsible for deallocating it, e.g.:

ClosePort( whichPort );

DisposPtr( (Ptr) whichPort );

Be sure to close the port before disposing of the memory occupied by the

GrafPort structure. Otherwise, the visRgn and clipRgn memory cannot be

recovered.

Referenced by (14):