XvQueryExtension(3) libXv Functions XvQueryExtension(3)

NAME

XvQueryExtension - return version and release of extension

SYNOPSIS

#include <X11/extensions/Xvlib.h>

int XvQueryExtension(Display *dpy, unsigned int *p_version,
unsigned int *p_revision,
unsigned int *p_request_base,
unsigned int *p_event_base,
unsigned int *p_error_base);

ARGUMENTS

dpy Specifies the connection to the X server.

p_version Pointer to where the current version number of the Xv
video extension is written.

p_revision Pointer to where the revision number of the Xv video
extension is written.

p_request_base Pointer to where the extension major request number is
returned

p_event_base Pointer to where the extension event base is returned

p_error_base Pointer to where the extension error base is returned

DESCRIPTION

XvQueryExtension(3) returns the version and release numbers for the
Xv video extension currently loaded on the system. The extension
major request number, event base, and error base are also returned.

RETURN VALUES

[Success]
Returned if XvQueryExtension(3) completed successfully.

[XvBadExtension]
Returned if the Xv video extension is not available for the
named display.

SEE ALSO

Xv(3)

X Version 11 libXv 1.0.13 XvQueryExtension(3)