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Find the control surface hit by a given point
PtSurface_t *PtSurfaceHit(
PtWidget_t *widget,
PhPoint_t const *point,
unsigned long event_mask,
PtSurface_t const *surface );
ph
PtSurfaceHit() finds the control surface, belonging to the
given widget, at the coordinates pointed to by point.
The event_mask specifies the event types to which the
control surface must be sensitive.
A value of 0 means any event types.
The surface argument, if not NULL is the
control surface to test first.
A pointer to the control surface hit by the given point, or
NULL if there isn't one or an error occurred.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PhPoint_t,
PtSurfaceCalcBoundingBox(),
PtSurfaceRect(),
PtSurfaceTestPoint()
Control Surfaces
chapter of the Photon Programmer's Guide
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