QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Setting up the screen resolution from within a Photon application on either QNX4 or QNX RTP |
| Ref. No. |
QNX.000009874 |
| Category(ies) |
Development |
| Issue |
Is there a way to get the current screen resolution from within a Photon application?
|
| Solution |
Use PhWindowQueryVisible() function with flag parameter set to Ph_QUERY_GRAPHICS.
ie: Determine the absolute coordinates of the current console:
PhRect_t extent;
if( PhWindowQueryVisible( Ph_QUERY_GRAPHICS, 0,
input_group, &extent ) == 0 ) {
printf( "Upper left: (%d,%d) Lower right: (%d,%d)n",
extent.ul.x, extent.ul.y,
extent.lr.x, extent.lr.y );
}
Note: Due to the shelves in QNX RTP if you want the whole screen including the area taken up by the shelves you must use the Ph_QUERY_EXACT flag. |
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