xref: /xsrc/external/mit/libXi/dist/src/XGetProp.c

/************************************************************

Copyright 1989, 1998  The Open Group

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Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.

			All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Hewlett-Packard not be
used in advertising or publicity pertaining to distribution of the
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********************************************************/

/***********************************************************************
 *
 * XGetDeviceDontPropagateList - Get the dont_propagate_list for a
 * window.
 *
 */

#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include <X11/Xlibint.h>
#include <X11/extensions/XInput.h>
#include <X11/extensions/extutil.h>
#include "XIint.h"

XEventClass *
XGetDeviceDontPropagateList(
    register Display	*dpy,
    Window		 window,
    int			*count)
{
    XEventClass *list = NULL;
    int rlen;
    xGetDeviceDontPropagateListReq *req;
    xGetDeviceDontPropagateListReply rep;
    XExtDisplayInfo *info = XInput_find_display(dpy);

    LockDisplay(dpy);
    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
	return ((XEventClass *) NoSuchExtension);

    GetReq(GetDeviceDontPropagateList, req);
    req->reqType = info->codes->major_opcode;
    req->ReqType = X_GetDeviceDontPropagateList;
    req->window = window;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
	UnlockDisplay(dpy);
	SyncHandle();
	return (XEventClass *) NULL;
    }
    *count = rep.count;

    if (*count) {
	rlen = rep.length << 2;
	list = (XEventClass *) Xmalloc(rep.length * sizeof(XEventClass));
	if (list) {
	    int i;
	    CARD32 ec;

	    /* read and assign each XEventClass separately because
	     * the library representation may not be the same size
	     * as the wire representation (64 bit machines)
	     */
	    for (i = 0; i < rep.length; i++) {
		_XRead(dpy, (char *)(&ec), sizeof(CARD32));
		list[i] = (XEventClass) ec;
	    }
	} else
	    _XEatData(dpy, (unsigned long)rlen);
    }

    UnlockDisplay(dpy);
    SyncHandle();
    return (list);
}