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99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* $Xorg: ChProp.c,v 1.4 2001/02/09 02:03:31 xorgcvs Exp $ */
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/*
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Copyright 1986, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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/* $XFree86: xc/lib/X11/ChProp.c,v 1.5 2003/11/17 22:20:06 dawes Exp $ */
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#include "Xlibint.h"
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int
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XChangeProperty (
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register Display *dpy,
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Window w,
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Atom property,
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Atom type,
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int format, /* 8, 16, or 32 */
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int mode, /* PropModeReplace, PropModePrepend, PropModeAppend */
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_Xconst unsigned char *data,
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int nelements)
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{
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register xChangePropertyReq *req;
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register long len;
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LockDisplay(dpy);
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GetReq (ChangeProperty, req);
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req->window = w;
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req->property = property;
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req->type = type;
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req->mode = mode;
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if (nelements < 0) {
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req->nUnits = 0;
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req->format = 0; /* ask for garbage, get garbage */
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} else {
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req->nUnits = nelements;
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req->format = format;
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}
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switch (req->format) {
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case 8:
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len = ((long)nelements + 3)>>2;
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if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
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SetReqLen(req, len, len);
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Data (dpy, (char *)data, nelements);
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} /* else force BadLength */
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break;
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case 16:
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len = ((long)nelements + 1)>>1;
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if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
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SetReqLen(req, len, len);
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len = (long)nelements << 1;
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Data16 (dpy, (short *) data, len);
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} /* else force BadLength */
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break;
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case 32:
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len = nelements;
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if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
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SetReqLen(req, len, len);
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len = (long)nelements << 2;
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Data32 (dpy, (long *) data, len);
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} /* else force BadLength */
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break;
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default:
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/* BadValue will be generated */ ;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return 1;
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}
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