11ab64890Smrg/* 21ab64890Smrg 31ab64890SmrgCopyright 1986, 1998 The Open Group 41ab64890Smrg 51ab64890SmrgPermission to use, copy, modify, distribute, and sell this software and its 61ab64890Smrgdocumentation for any purpose is hereby granted without fee, provided that 71ab64890Smrgthe above copyright notice appear in all copies and that both that 81ab64890Smrgcopyright notice and this permission notice appear in supporting 91ab64890Smrgdocumentation. 101ab64890Smrg 111ab64890SmrgThe above copyright notice and this permission notice shall be included in 121ab64890Smrgall copies or substantial portions of the Software. 131ab64890Smrg 141ab64890SmrgTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 151ab64890SmrgIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 161ab64890SmrgFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 171ab64890SmrgOPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 181ab64890SmrgAN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 191ab64890SmrgCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 201ab64890Smrg 211ab64890SmrgExcept as contained in this notice, the name of The Open Group shall not be 221ab64890Smrgused in advertising or otherwise to promote the sale, use or other dealings 231ab64890Smrgin this Software without prior written authorization from The Open Group. 241ab64890Smrg 251ab64890Smrg*/ 261ab64890Smrg 271ab64890Smrg#ifdef HAVE_CONFIG_H 281ab64890Smrg#include <config.h> 291ab64890Smrg#endif 309c927599Smrg#include <limits.h> 319c927599Smrg#include <stdbool.h> 321ab64890Smrg#include "Xlibint.h" 331ab64890Smrg 341ab64890SmrgBool 351ab64890SmrgXQueryExtension( 361ab64890Smrg register Display *dpy, 371ab64890Smrg _Xconst char *name, 381ab64890Smrg int *major_opcode, /* RETURN */ 391ab64890Smrg int *first_event, /* RETURN */ 401ab64890Smrg int *first_error) /* RETURN */ 4161b2299dSmrg{ 421ab64890Smrg xQueryExtensionReply rep; 431ab64890Smrg register xQueryExtensionReq *req; 441ab64890Smrg 4503ea5dc6Smrg if (name != NULL && strlen(name) >= USHRT_MAX) 469c927599Smrg return false; 479c927599Smrg 481ab64890Smrg LockDisplay(dpy); 491ab64890Smrg GetReq(QueryExtension, req); 509c019ec5Smaya req->nbytes = name ? (CARD16) strlen(name) : 0; 511ab64890Smrg req->length += (req->nbytes+(unsigned)3)>>2; 521ab64890Smrg _XSend(dpy, name, (long)req->nbytes); 531ab64890Smrg (void) _XReply (dpy, (xReply *)&rep, 0, xTrue); 541ab64890Smrg *major_opcode = rep.major_opcode; 551ab64890Smrg *first_event = rep.first_event; 561ab64890Smrg *first_error = rep.first_error; 571ab64890Smrg UnlockDisplay(dpy); 581ab64890Smrg SyncHandle(); 591ab64890Smrg return (rep.present); 601ab64890Smrg} 611ab64890Smrg 62