#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

int main( int argc, char **argv )
{
    Display *d = XOpenDisplay(0);
    int s = DefaultScreen(d);
    XSetWindowAttributes xswa;
    XSizeHints hints;
    XEvent event;
    Window w;
    int i, gx, gy, sx = -1, sy = -1;

    /* Create a window and map it. */
    xswa.event_mask = StructureNotifyMask;
    w = XCreateWindow(d, RootWindow(d, s), 0, 0, 20, 20, 0,
                      CopyFromParent, InputOutput, CopyFromParent,
                      CWEventMask, &xswa);
    XMapWindow(d, w);
    do { XMaskEvent(d, StructureNotifyMask, &event);
    } while ((event.type != MapNotify) || (event.xmap.event != w));

    /* Set the window gravity. */
    hints.flags = PWinGravity;
    if(argc > 1 && argv[ 1 ][ 0 ] == 's') {
        fprintf(stderr, "Using StaticGravity...\n");
        hints.win_gravity = StaticGravity;
    } else {
        fprintf(stderr, "Using NorthWestGravity...\n");
        hints.win_gravity = NorthWestGravity;
    }
    XSetWMNormalHints(d, w, &hints);

    /* Move the window to its current location 10 times. */
    for(i = 0; i < 10; i++) {
        Window dw;
        XTranslateCoordinates(d, w, DefaultRootWindow(d),
                              0, 0, &gx, &gy, &dw);
        if(sx < 0) { sx = gx; sy = gy; }
        XMoveResizeWindow(d, w, gx, gy, 20, 20);
        XSync(d, False);
        fprintf(stderr, "%d: (%d, %d)\n", i, gx, gy);
        usleep(500);
    }
    if(sx != gx || sy != gy) {
        fprintf(stdout, "Test failed: window moved.\n");
    } else {
        fprintf(stdout, "Test passed: window did not move.\n");
    }

    /* Done. */
    XDestroyWindow(d, w);
    XCloseDisplay(d);
    return 0;
}