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/* $Xorg: XpExtVer.c,v 1.4 2000/08/17 19:46:07 cpqbld Exp $ */
/******************************************************************************
******************************************************************************
**
** (c) Copyright 1996 Hewlett-Packard Company
** (c) Copyright 1996 International Business Machines Corp.
** (c) Copyright 1996 Sun Microsystems, Inc.
** (c) Copyright 1996 Novell, Inc.
** (c) Copyright 1996 Digital Equipment Corp.
** (c) Copyright 1996 Fujitsu Limited
** (c) Copyright 1996 Hitachi, Ltd.
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
** IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
** CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**
** Except as contained in this notice, the names of the copyright holders shall
** not be used in advertising or otherwise to promote the sale, use or other
** dealings in this Software without prior written authorization from said
** copyright holders.
**
******************************************************************************
*****************************************************************************/
/* $XFree86: xc/lib/Xp/XpExtVer.c,v 1.5 2002/10/16 00:37:31 dawes Exp $ */
#define NEED_REPLIES
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <X11/extensions/Printstr.h>
#include <X11/Xlibint.h>
#include "XpExtUtil.h"
Bool
XpQueryExtension (
Display *dpy,
int *event_base_return, /* return value */
int *error_base_return /* return value */
)
{
XExtDisplayInfo *info = (XExtDisplayInfo *) xp_find_display (dpy);
if (XextHasExtension (info)) {
*event_base_return = info->codes->first_event;
*error_base_return = info->codes->first_error;
return True;
} else {
return False;
}
}
/* Prototype for |XpCheckExtInitUnlocked()|
* See XpExtUtil.c - same as |XpCheckExtInit()| but does not obtain the Xlib global lock */
extern int XpCheckExtInitUnlocked(
register Display *dpy,
register int version_index
);
Status
XpQueryVersion (
Display *dpy,
short *major_version,
short *minor_version
)
{
xPrintQueryVersionReq *req;
xPrintQueryVersionReply rep;
XExtDisplayInfo *info = (XExtDisplayInfo *) xp_find_display (dpy);
/*
* Note: many extensions treat major and minor as "ints", but
* protocol wise and internal wise, they're shorts.
*/
*major_version = 0;
*minor_version = 0;
#ifdef Would_Need_xpPrintData_Struct_Def
/*
* We may already have the answer cached from a previous query.
*/
if (( info->data ) && ( ((xpPrintData *) info->data)->vers->present )) {
*major_version = ((xpPrintData *) info->data)->vers->major_version ;
*minor_version = ((xpPrintData *) info->data)->vers->minor_version ;
return (/* non-zero indicates extension present */ True);
}
#endif /* Would_Need_xpPrintData_Struct_Def */
if (XpCheckExtInitUnlocked(dpy, XP_DONT_CHECK) == -1)
return (/* No such extension */ False);
LockDisplay (dpy);
GetReq(PrintQueryVersion,req);
req->reqType = info->codes->major_opcode;
req->printReqType = X_PrintQueryVersion;
if (! _XReply (dpy, (xReply *) &rep, 0, xTrue)) {
UnlockDisplay(dpy);
SyncHandle();
return(/* No such extension */ False);
}
*major_version = rep.majorVersion;
*minor_version = rep.minorVersion;
UnlockDisplay(dpy);
SyncHandle();
return (/* non-zero indicates extension present */ True);
}
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