Nvidia Quadro FX 4800 - Page 75

NVIDIA Corporation
Quadro FX 4800/5800 and Quadro CX SDI User’s Guide – Version 1.0 71
C
HAPTER 5
API Control
);
ThisfunctionreturnsTrueiftheextensionexists,Falseotherwise. major and minor are
theextensionʹsmajorandminorversionnumbers.
XNVCTRLIsNvScreen()
Bool XNVCTRLIsNvScreen (
Display *dpy,
int screen
);
ThisfunctionreturnsTrueisthespecifiedscreeniscontrolledbytheNVIDIAdriver,
otherwiseFalse.
XNVCTRLSetAttribute()
void XNVCTRLSetAttribute (
Display *dpy,
int screen,
unsigned int display_mask,
unsigned int attribute,
int value
);
Thisfunctionsetstheattributetothegivenvalue.Notallattributesrequirethe
display_maskparameter.See“NV_CTRL_ GVOAttributes”onpage 75fordetails.
Possibleerrors:
•BadValue‐Thescreenorattributedoesnʹtexist.
• BadMatch‐TheNVIDIAdriverisnotpresentonthatscreen.
XNVCTRLSetAttributeAndGetStatus()
Bool XNVCTRLSetAttributeAndGetStatus (
Display *dpy,
int screen,
unsigned int display_mask,
unsigned int attribute,
int value