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Get the bounding box of a control surface
PhRect_t *PtSurfaceRect( PtSurface_t *surface,
PhRect_t *rect );
PhRect_t *PtSurfaceRectById( PtWidget_t *widget,
unsigned char surface_id,
PhRect_t *rect );
ph
These functions retrieve the bounding box of a control surface.
They differ in the way they identify the control surface:
- PtSurfaceRect()
- Uses the surface argument, which points to a
PtSurface_t structure that describes the control surface.
This pointer must not be NULL.
- PtSurfaceRectById()
- Searches the control surfaces belonging to the widget for the one
with an ID of surface_id.
If rect is non-NULL, the result is copied there
and the functions return rect.
Otherwise, a pointer to the surface's internal data is returned.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PtSurfaceRect() is a macro.
PhRect_t,
PtCalcSurface(),
PtCalcSurfaceByAction(),
PtCalcSurfaceById(),
PtSurfaceCalcBoundingBox(),
PtSurfaceCalcBoundingBoxById(),
PtSurfaceExtent(),
PtSurfaceExtentById()
Control Surfaces
chapter of the Photon Programmer's Guide
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