Attachment 103104 Details for Bug 77356 – A simple xcb app that exactly reproduce this bug

A simple xcb app that exactly reproduce this bug

transient.c (text/plain), 4.90 KB, created by Boyan Ding on 2014-07-19 13:15:34 UTC

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Filename:

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Creator: Boyan Ding

Created: 2014-07-19 13:15:34 UTC

Size: 4.90 KB

patch

obsolete

>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>#include <inttypes.h>
>
>#include <xcb/xcb.h>
>#include <xcb/xcb_atom.h>
>
>#define WIDTH 300 
>#define HEIGHT 150 
>
>static void
>testCookie (xcb_void_cookie_t cookie,
>            xcb_connection_t *connection,
>            char *errMessage )
>{   
>    xcb_generic_error_t *error = xcb_request_check (connection, cookie);
>    if (error) {
>        fprintf (stderr, "ERROR: %s : %"PRIu8"\n", errMessage , error->error_code);
>        xcb_disconnect (connection);
>        exit (-1);
>    }   
>}
>
>int
>main ()
>{
>    /* get the connection */
>    int screenNum;
>    xcb_connection_t *connection = xcb_connect (NULL, &screenNum);
>    if (!connection) {
>        fprintf (stderr, "ERROR: can't connect to an X server\n");
>        return -1;
>    }
>
>    /* get the current screen */
>
>    xcb_screen_iterator_t iter = xcb_setup_roots_iterator (xcb_get_setup (connection));
>
>    /* we want the screen at index screenNum of the iterator */
>    for (int i = 0; i < screenNum; ++i) {
>        xcb_screen_next (&iter);
>    }
>
>    xcb_screen_t *screen = iter.data;
>
>    if (!screen) {
>        fprintf (stderr, "ERROR: can't get the current screen\n");
>        xcb_disconnect (connection);
>        return -1;
>    }
>
>
>    /* create the window */
>
>    xcb_window_t window = xcb_generate_id (connection);
>    uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
>    uint32_t values[2];
>    values[0] = screen->white_pixel;
>    values[1] = XCB_EVENT_MASK_KEY_RELEASE |
>                XCB_EVENT_MASK_BUTTON_PRESS |
>                XCB_EVENT_MASK_EXPOSURE |
>                XCB_EVENT_MASK_POINTER_MOTION;
>
>    xcb_void_cookie_t windowCookie = xcb_create_window_checked (connection,
>                                                                screen->root_depth,
>                                                                window,
>                                                                screen->root,
>                                                                20, 200, WIDTH, HEIGHT,
>                                                                0,
>                                                                XCB_WINDOW_CLASS_INPUT_OUTPUT,
>                                                                screen->root_visual,
>                                                                mask, values );
>
>    testCookie (windowCookie, connection, "can't create window");
>
>    xcb_void_cookie_t mapCookie = xcb_map_window_checked (connection, window);
>    testCookie (mapCookie, connection, "can't map window");
>
>    /* create the 1x1 window */
>
>    xcb_window_t window1 = xcb_generate_id (connection);
>
>    xcb_void_cookie_t windowCookie1 = xcb_create_window_checked (connection,
>                                                                 screen->root_depth,
>                                                                 window1,
>                                                                 screen->root,
>                                                                 20, 200, WIDTH, HEIGHT,
>                                                                 0,
>                                                                 XCB_WINDOW_CLASS_INPUT_OUTPUT,
>                                                                 screen->root_visual,
>                                                                 mask, values );
>
>    testCookie (windowCookie1, connection, "can't create window");
>    /* No mapping */
>
>    /* create transient window */
>
>    xcb_window_t window2 = xcb_generate_id (connection);
>
>    xcb_void_cookie_t windowCookie2 = xcb_create_window_checked (connection,
>                                                                 screen->root_depth,
>                                                                 window2,
>                                                                 screen->root,
>                                                                 20, 200, WIDTH, HEIGHT,
>                                                                 0,
>                                                                 XCB_WINDOW_CLASS_INPUT_OUTPUT,
>                                                                 screen->root_visual,
>                                                                 mask, values );
>
>    testCookie (windowCookie2, connection, "can't create window");
>
>    xcb_change_property (connection,
>                         XCB_PROP_MODE_REPLACE,
>                         window2,
>                         XCB_ATOM_WM_TRANSIENT_FOR,
>                         XCB_ATOM_WINDOW,
>                         32,
>                         1,
>                         &window1);
>
>    xcb_void_cookie_t mapCookie2 = xcb_map_window_checked (connection, window2);
>    testCookie (mapCookie2, connection, "can't map window");
>
>    xcb_flush(connection);
>
>    while (1) {
>        xcb_generic_event_t *event = xcb_poll_for_event (connection);
>        if (event) {
>            free(event);
>        }
>    }
>    return 0;
>}

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