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

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

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

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Permission to use, copy, modify, and distribute this software and its
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provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
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********************************************************/

/***********************************************************************
 *
 * XGrabDevice - grab an extension input device.
 *
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#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"

int
XGrabDevice(
    register Display	*dpy,
    XDevice		*dev,
    Window		 grab_window,
    Bool		 ownerEvents,
    int			 event_count,
    XEventClass		*event_list,
    int			 this_device_mode,
    int			 other_devices_mode,
    Time		 time)
{
    xGrabDeviceReply rep;
    register xGrabDeviceReq *req;
    XExtDisplayInfo *info = XInput_find_display(dpy);

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

    GetReq(GrabDevice, req);
    req->reqType = info->codes->major_opcode;
    req->ReqType = X_GrabDevice;

    req->deviceid = dev->device_id;
    req->grabWindow = grab_window;
    req->ownerEvents = ownerEvents;
    req->event_count = event_count;
    req->this_device_mode = this_device_mode;
    req->other_devices_mode = other_devices_mode;
    req->time = time;
    req->length += event_count;

    /* note: Data is a macro that uses its arguments multiple
     * times, so "nvalues" is changed in a separate assignment
     * statement */

    event_count <<= 2;
    Data32(dpy, (long *)event_list, event_count);

    if (_XReply(dpy, (xReply *) & rep, 0, xTrue) == 0)
	rep.status = GrabSuccess;
    UnlockDisplay(dpy);
    SyncHandle();
    return (rep.status);
}