QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Turning the cursor on or off |
| Ref. No. |
QNX.000009533 |
| Category(ies) |
Development |
| Issue |
We have an application where we need to turn the Photon cursor on or off. Is this possible? How?
|
| Solution |
There are no 'built-in' options or functions to do this, but it is very easy to turn the mouse cursor on or off from code. Here is an example:
#define ON 1
#define OFF 0
int CursorOnOff( int state )
{
FILE *fp;
char buffer[20];
PhRegion_t region;
int rid;
PhAttach( NULL, NULL ); //find pointer region
fp = popen( "phin -h -PInput -f r", "r" );
if( fgets( buffer, 20, fp ) )
{
rid = atoi( buffer );
PhRegionQuery( rid, ®ion, NULL, NULL, 0);
if (state==ON)
region.flags |= Ph_PTR_REGION;
// -- cursor on
if (state==OFF)
region.flags &= ~Ph_PTR_REGION;
// -- cursor off
PhRegionChange(Ph_REGION_FLAGS, 0, &ion, NULL, NULL );
return(1);
}
else
return(0);
} // End function CursorOnOff
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