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- // $Id: grabtest.C,v 1.2 1998/04/28 14:40:38 zeller Exp $
- // Simple grab tester -- debug this with DDD and `checkGrab' enabled.
-
- // Copyright (C) 1998 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // DDD is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- // See the GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public
- // License along with DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
-
- #include <X11/Xlib.h>
- #include <unistd.h> // sleep()
- #include <stdlib.h> // atoi()
- #include <sys/types.h>
- #include <iostream.h>
- #include <signal.h>
-
- int main(int argc, char *argv[])
- {
- Display *display = XOpenDisplay((char *)0);
- if (display == 0)
- {
- cerr << "Cannot open display\n";
- exit(1);
- }
- Window window = DefaultRootWindow(display);
-
- int seconds = 5;
- if (argc > 1 && atoi(argv[1]) > 0)
- seconds = atoi(argv[1]);
-
- cout << "Grabbing...";
- cout.flush();
-
- // We pass GrabModeAsync for the keyboard such that it will keep
- // on working.
- int grab_result = XGrabPointer(display, window,
- True, 0, GrabModeSync, GrabModeAsync,
- None, None, CurrentTime);
-
- // Placing a breakpoint
- //
- // <====== here
- //
- // will interrupt this function while the pointer is grabbed.
- // Rely on DDD `checkGrab' to ungrab it.
-
- switch (grab_result)
- {
- case GrabSuccess:
- cout << "GrabSuccess\n";
- cout << "Sleeping for " << seconds << " seconds...";
- cout.flush();
-
- sleep(seconds);
- XUngrabPointer(display, CurrentTime);
- XFlush(display);
-
- cout << "done.\n";
- break;
-
- case GrabNotViewable:
- cout << "GrabNotViewable\n";
- break;
-
- case AlreadyGrabbed:
- cout << "AlreadyGrabbed\n";
- break;
-
- case GrabFrozen:
- cout << "GrabFrozen\n";
- break;
-
- case GrabInvalidTime:
- cout << "GrabInvalidTime\n";
- break;
-
- default:
- cout << grab_result << "\n";
- break;
- }
-
- exit(0);
- }
-