x11 resize

1. 口大小改变消息处理

   		case ConfigureNotify:
   			if (width != ev.xconfigure.width || height != ev.xconfigure.height)
   			{
   				width = ev.xconfigure.width;
   				height = ev.xconfigure.height;
   				printf("Size changed to: %d by %d\n", width, height);
   			}
   			break;
   

   这里 ConfigureNotify 过滤窗口修改事件。