diff options
Diffstat (limited to 'nx-X11/lib/Xp/XpExtVer.c')
| -rw-r--r-- | nx-X11/lib/Xp/XpExtVer.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/nx-X11/lib/Xp/XpExtVer.c b/nx-X11/lib/Xp/XpExtVer.c new file mode 100644 index 000000000..32227e89f --- /dev/null +++ b/nx-X11/lib/Xp/XpExtVer.c @@ -0,0 +1,125 @@ +/* $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); +} + |