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#ifndef __NVCTRLLIB_H
#define __NVCTRLLIB_H
#include "NVCtrl.h"
#if defined(__cplusplus)
extern "C" {
#endif
/*
* XNVCTRLQueryExtension -
*
* Returns True if the extension exists, returns False otherwise.
* event_basep and error_basep are the extension event and error
* bases. Currently, no extension specific errors or events are
* defined.
*/
Bool XNVCTRLQueryExtension (
Display *dpy,
int *event_basep,
int *error_basep
);
/*
* XNVCTRLQueryVersion -
*
* Returns True if the extension exists, returns False otherwise.
* major and minor are the extension's major and minor version
* numbers.
*/
Bool XNVCTRLQueryVersion (
Display *dpy,
int *major,
int *minor
);
/*
* XNVCTRLIsNvScreen
*
* Returns True is the specified screen is controlled by the NVIDIA
* driver. Returns False otherwise.
*/
Bool XNVCTRLIsNvScreen (
Display *dpy,
int screen
);
/*
* XNVCTRLSetAttribute -
*
* Sets the attribute to the given value. The attributes and their
* possible values are listed in NVCtrl.h.
*
* Not all attributes require the display_tqmask parameter; see
* NVCtrl.h for details.
*
* Possible errors:
* BadValue - The screen or attribute doesn't exist.
* BadMatch - The NVIDIA driver is not present on that screen.
*/
void XNVCTRLSetAttribute (
Display *dpy,
int screen,
unsigned int display_tqmask,
unsigned int attribute,
int value
);
/*
* XNVCTRLQueryAttribute -
*
* Returns True if the attribute exists. Returns False otherwise.
* If XNVCTRLQueryAttribute returns True, value will contain the
* value of the specified attribute.
*
* Not all attributes require the display_tqmask parameter; see
* NVCtrl.h for details.
*
* Possible errors:
* BadValue - The screen doesn't exist.
* BadMatch - The NVIDIA driver is not present on that screen.
*/
Bool XNVCTRLQueryAttribute (
Display *dpy,
int screen,
unsigned int display_tqmask,
unsigned int attribute,
int *value
);
/*
* XNVCTRLQueryStringAttribute -
*
* Returns True if the attribute exists. Returns False otherwise.
* If XNVCTRLQueryStringAttribute returns True, *ptr will point to an
* allocated string containing the string attribute requested. It is
* the caller's responsibility to free the string when done.
*
* Possible errors:
* BadValue - The screen doesn't exist.
* BadMatch - The NVIDIA driver is not present on that screen.
* BadAlloc - Insufficient resources to fulfill the request.
*/
Bool XNVCTRLQueryStringAttribute (
Display *dpy,
int screen,
unsigned int display_tqmask,
unsigned int attribute,
char **ptr
);
/*
* XNVCTRLQueryValidAttributeValues -
*
* Returns True if the attribute exists. Returns False otherwise. If
* XNVCTRLQueryValidAttributeValues returns True, values will indicate
* the valid values for the specified attribute; see the description
* of NVCTRLAttributeValidValues in NVCtrl.h.
*/
Bool XNVCTRLQueryValidAttributeValues (
Display *dpy,
int screen,
unsigned int display_tqmask,
unsigned int attribute,
NVCTRLAttributeValidValuesRec *values
);
/*
* XNVCtrlSelectNotify -
*
* This enables/disables receiving of NV-CONTROL events. The type
* specifies the type of event to enable (currently, the only type is
* ATTRIBUTE_CHANGED_EVENT); onoff controls whether receiving this
* type of event should be enabled (True) or disabled (False).
*
* Returns True if successful, or False if the screen is not
* controlled by the NVIDIA driver.
*/
Bool XNVCtrlSelectNotify (
Display *dpy,
int screen,
int type,
Bool onoff
);
/*
* XNVCtrlEvent structure
*/
typedef struct {
int type;
unsigned long serial;
Bool send_event; /* always FALSE, we don't allow send_events */
Display *display;
Time time;
int screen;
unsigned int display_tqmask;
unsigned int attribute;
int value;
} XNVCtrlAttributeChangedEvent;
typedef union {
int type;
XNVCtrlAttributeChangedEvent attribute_changed;
long pad[24];
} XNVCtrlEvent;
#if defined(__cplusplus)
}
#endif
#endif /* __NVCTRLLIB_H */
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