GTK中的启动画面

我是GTK的新手，我正在用它在C语言中创建UI.我创建了一个初始屏幕，并且可以在指定的几秒钟后使用功能g_timeout_add(100, function_to_call, NULL);将其关闭.初始屏幕效果很好.但是问题是当进一步扩展程序时(即)关闭启动屏幕后，我希望另一个窗口自动显示，但不会发生.两个窗户一起打开.这是我的程序.

I'm new to GTK and i'm using it to create UI in C. I've created a splash screen and i'm able to close it after specified seconds using the function g_timeout_add(100, function_to_call, NULL);. The Splash screen works great. but the problem is when in extend my program further (i.e) After closing the splash screen I want another window to be displayed automatically, it doesn't happen so. Both the windows open together. Here is my program.

gboolean function_to_call(gpointer data){
    gtk_quit_main();
    return(FALSE);
}
int main (int argc, char *argv[]){
    GtkWidget *window, *image, *another_window;
    gtk_init(&argc, &argv);
    .
    .
    .
    .
    .
    .
    .
    g_timeout_add (100, function_to_call, NULL);
    gtk_main ();
    /*if my program is till this, splash screen closes after 1 sec . But when i try
     *to define another window from here onwards and call gtk_widget_show() and gtk_main() 
     *again for another_ window, window and another_window both open together and window  
     *doesn't close after 1 sec. */
}

任何帮助都是可贵的.
谢谢你.

Any kind of help is appreciatable.
Thank you.