GdkWindowState 在GDK2和GDK3的使用区别
写个程序的时候，需要获取程序窗口的状态，之前代码是用GTK2编写的，现在用GTK3编译，结果发现，最大化后，无法还原了，仔细对比状态值，发现了问题，仔细对比API:GDK2：http://gtk.awaysoft.com/apis/lastest/gdk/gdk-Event-Structures.html#GdkWindowState
GDK3：http://gtk.awaysoft.com/apis/lastest/gdk3/gdk3-Event-Structures.html#GdkWindowState
对比，可以发现，在GDK3中添加了一个
GDK_WINDOW_STATE_FOCUSED = 1 << 7
即激活状态，这个状态几乎一直是存在的，（窗口不激活的时候，一般也不会检查状态吧）
所以，之前通过switch判断的代码就不可使用了，必须通过&运算符来判断。
之前代码：
switch(state){
case GDK_WINDOW_STATE_WITHDRAWN: af_window_set_visible(TRUE);
break;
case GDK_WINDOW_STATE_ICONIFIED: gtk_window_deiconify(GTK_WINDOW(window));
break;
case GDK_WINDOW_STATE_MAXIMIZED: gtk_window_unmaximize(GTK_WINDOW(window));
break;
case GDK_WINDOW_STATE_STICKY: gtk_window_unstick(GTK_WINDOW(window));
break;
case GDK_WINDOW_STATE_FULLSCREEN: af_window_set_fullscreen(FALSE);
break;
case GDK_WINDOW_STATE_ABOVE: af_window_set_above(FALSE);
break;
case GDK_WINDOW_STATE_BELOW: af_window_set_below(FALSE);
break;
default:
return FALSE;
}现在代码：
if ((state & GDK_WINDOW_STATE_WITHDRAWN)) af_window_set_visible(TRUE);
if ((state & GDK_WINDOW_STATE_ICONIFIED)) gtk_window_deiconify(GTK_WINDOW(window));
if ((state & GDK_WINDOW_STATE_MAXIMIZED)) gtk_window_unmaximize(GTK_WINDOW(window));
if ((state & GDK_WINDOW_STATE_STICKY)) gtk_window_unstick(GTK_WINDOW(window));
if ((state & GDK_WINDOW_STATE_FULLSCREEN)) af_window_set_fullscreen(FALSE);
if ((state & GDK_WINDOW_STATE_ABOVE)) af_window_set_above(FALSE);
if ((state & GDK_WINDOW_STATE_BELOW)) af_window_set_below(FALSE);
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