NVIDIA FX4500 User Guide - Page 79

XNVCTRLQueryStringAttribute(), XNVCTRLSetStringAttribute

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Chapter 05 : API Control XNVCTRLQueryStringAttribute() Bool XNVCTRLQueryStringAttribute ( Display *dpy, int screen, unsigned int display_mask, unsigned int attribute, char **ptr ); This function returns True if the attribute exists, otherwise False. If XNVCTRLQueryStringAttribute returns True, *ptr will point to an allocated string containing the string attribute requested. It is the callerʹs responsibility to free the string when done. Possible errors:  BadValue ‐ The screen doesnʹt exist.  BadMatch ‐ The NVIDIA driver is not present on that screen.  BadAlloc ‐ Insufficient resources to fulfill the request. XNVCTRLSetStringAttribute() Bool XNVCTRLSetStringAttribute ( Display *dpy, int screen, unsigned int display_mask, unsigned int attribute, char *ptr ); Returns True if the operation succeeded, otherwise False. Possible X errors:  BadValue ‐ The screen doesnʹt exist.  BadMatch ‐ The NVIDIA driver is not present on that screen.  BadAlloc ‐ Insufficient resources to fulfill the request. Quadro 4000/5000/6000 SDI DU-05337-001_v01 | 75

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Quadro 4000/5000/6000 SDI
DU-05337-001_v01
|
75
Chapter 05 : API Control
XNVCTRLQueryStringAttribute()
Bool XNVCTRLQueryStringAttribute (
Display *dpy,
int screen,
unsigned int display_mask,
unsigned int attribute,
char **ptr
);
This function returns
True
if the attribute exists, otherwise
False
.
If XNVCTRLQueryStringAttribute returns True, *ptr will point to an allocated string
containing the string attribute requested. It is the caller
ʹ
s responsibility to free the string
when done.
Possible errors:
BadValue
‐
The screen doesn
ʹ
t exist.
BadMatch
‐
The NVIDIA driver is not present on that screen.
BadAlloc
‐
Insufficient resources to fulfill the request.
XNVCTRLSetStringAttribute()
Bool XNVCTRLSetStringAttribute (
Display *dpy,
int screen,
unsigned int display_mask,
unsigned int attribute,
char *ptr
);
Returns
True
if the operation succeeded, otherwise
False
.
Possible X errors:
BadValue
‐
The screen doesn
ʹ
t exist.
BadMatch
‐
The NVIDIA driver is not present on that screen.
BadAlloc
‐
Insufficient resources to fulfill the request.