mainwin的rect坐标值都为0，返回的mainwin值非零。

发布于 2021-07-15 21:02:39 浏览：752 订阅该版

MCU GD32F450ZGT6
RT-Thread 4.0.2
gui_engine 2.1
屏型号ILI9488 480*320，RGB接口(TFT_LCD控制器）

我的问题是RGB能驱动屏，能设置背景色，是好用的，线程函数调用的
`rtgui_mainwin_create`中`rtgui_get_mainwin_rect`获得的`mainwin`的`rect`坐标值都为0，这是不对的，x2，y2应该为win的长宽才对吧，而返回的main_win却是非0值呢。
麻烦大神帮忙看看啊！
```c
//启动线程
	rt_thread_t tid；
 
 tid = rt_thread_create("mygui",
        rt_gui_entry, RT_NULL,
        2048, 25, 10);

if (tid ！= RT_NULL)
 {
rt_thread_startup(tid1);
}
 
/*!
    \brief      rt_gui thread
    \param[in]  pvParameters not used
    \param[out] none
    \retval     none
*/
static void rt_gui_entry(void *parameter)
{
    struct rtgui_win *main_win;
    struct rtgui_app *app;

/* create gui app */
    app = rtgui_app_create("gui_demo");
    if (app == RT_NULL)
        return;

main_win = rtgui_mainwin_create(RT_NULL, "UiWindow", RTGUI_WIN_STYLE_NO_TITLE);
    if (main_win == RT_NULL)
    {
        rtgui_app_destroy(app);
        return;
    }
    rtgui_object_set_event_handler(RTGUI_OBJECT(main_win), dc_event_handler);
    rtgui_win_show(main_win, RT_FALSE);

rtgui_app_run(app);
    rtgui_win_destroy(main_win);
    rtgui_app_destroy(app);

}
```
附图能看到rect的坐标值和返回的main_win值。
![mmexport54627a16898282cf91b2545f2142c146_1626351597203.webp](https://oss-club.rt-thread.org/uploads/20210715/40ab470ccad529e69de6bc84de781495.webp)
![mmexport04447f1509f69abbef19e365f3654760_1626351594403.webp](https://oss-club.rt-thread.org/uploads/20210715/a6d26f6b95af74efcda6d4f602d5c5e8.webp)