XIQueryVersion

Langue: en

Version: 10/02/2009 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

XIQueryVersion - announce and query the support XI2 version.

SYNOPSIS

 #include <X11/extensions/XInput2.h>
 

 Status XIQueryVersion( Display *display,
                        int *major_version_inout,
                        int *minor_version_inout);
 

 display
        Specifies the connection to the X server.
 

 major_version_inout
        Specifies the client's supported XI2 version, and
        returns the server's supported version.
 

 minor_version_inout
        Specifies the client's supported XI2 version, and
        returns the server's supported version.

DESCRIPTION

 XIQueryVersion announces the client's supported XI2 version to
 the server and returns server's supported X Input version. Clients
 are required to use XIQueryVersion instead of XGetExtensionVersion
 if they use XI2 calls. The server may treat a client differently
 depending on the supported version announced by the client.
 The major_version_inout must be 2 or greater, otherwise a BadValue
 error occurs.
 

 If the server does not support XI2, XIQueryVersion returns BadRequest
 to the client. Otherwise, XIQueryVersion returns Success. In both
 cases major_version_inout and minor_version_inout are set to the
 server's supported version.
 

 XIQueryVersion can generate a BadValue error.

EXAMPLES

 int rc;
 int major = 2;
 int minor = 0;
 

 rc = XIQueryVersion(dpy, &major, &minor);
 if (rc == Success)
     printf("XI2 supported. (%d.%d)\n", major, minor);
 else if (rc == BadRequest)
     printf("No XI2 support. (%d.%d only)\n", major, minor);
 else
     printf("Internal error\n");

DIAGNOSTICS

 BadValue
        A value is outside of the permitted range.