Nvidia Quadro FX 4800 User Manual page 75

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