Get data associated with a control surface
void *PtSurfaceGetData( PtWidget_t *widget, PtSurface_t *surface ); void *PtSurfaceGetDataById( PtWidget_t *widget, unsigned char surface_id );
ph
These functions retrieve the user data stored with a control surface belonging to the given widget. They differ in the way they identify the control surface:
A pointer to the data, or NULL if either the specified surface couldn't be found, or it doesn't have any data attached to it.
Photon
Safety: | |
---|---|
Interrupt handler | No |
Signal handler | No |
Thread | No |
PtSurfaceAddData(), PtSurfaceAddDataById(), PtSurfaceRemoveData(), PtSurfaceRemoveDataById()
Control Surfaces chapter of the Photon Programmer's Guide