man XtAddExposureToRegion (Fonctions bibliothèques) - merge exposure events into a region
NAME
XtAddExposureToRegion - merge exposure events into a region
SYNTAX
void XtAddExposureToRegion(XEvent *event, Region region);
ARGUMENTS
- event
- Specifies a pointer to the or event.
- region
- Specifies the region object (as defined in
DESCRIPTION
The function computes the union of the rectangle defined by the exposure event and the specified region. Then, it stores the results back in region. If the event argument is not an or event, returns without an error and without modifying region.
This function is used by the exposure compression mechanism (see Section 7.9.3).
SEE ALSO