一开始:
http://img.my.csdn.net/uploads/201209/14/1347622375_6973.PNG
选择后:
http://img.my.csdn.net/uploads/201209/14/1347622375_9803.PNG
取消选择后:
http://img.my.csdn.net/uploads/201209/14/1347622375_9127.PNG
label变小了,但窗口大小没变回来,请问该怎么办
------解决方案--------------------
layout->setSizeConstraint(QLayout::SetFixedSize);
layout是最外层的layout.