调整QDockWidget的大小 [英] resize a QDockWidget

问题描述

我有一个 QMainWindow ，其中包含多个 QDockWidget 。一次只能显示其中一个。我的问题是：

I have a QMainWindow that contains several QDockWidgets. Only one of them should be shown at a time. My Problem is:

当我隐藏一个dockWidget并显示另一个，新显示的大小是相同的只是隐藏，无论什么QSizePolicys，sizeHint，sizeConstraint我设置！我想要新显示的恢复自己的最后尺寸，但我找不到任何方法来调整 QDockWidget ，而不固定其大小 setMinimumSize 和 setMaximumSize 。

When I hide a dockWidget and show another, the size of the newly shown is the same as the just hidden, no matter what QSizePolicys, sizeHint, sizeConstraint I set! I want the newly shown to restore its own last size but I can't find any method to resize a QDockWidget, without fixing its size with setMinimumSize and setMaximumSize.

其实有一种方法，但我认为它很丑陋：

In fact there is one way but I consider it very ugly:

setMinimumWidth(500);
setMaximumWidth(500);
qApp().processEvents();
setMinimumWidth(0);
setMaximumWidth(9999);

必须有更好的方法吗？任何建议？

There must be a better way?! Any suggestions?

推荐答案

我试过你的问题中建议的解决方案，它适用于我，虽然有一个丑陋的闪光小部件通过额外的绘制周期。我没有找到一个更好的方法，所以我会使用它现在，直到Qt发布更好的支持QDockWidget。

I tried the solution you suggested in your question and it works for me, although there is an ugly flash while the widget goes through an extra paint cycle. I haven't found a better way, so I'll use it for now until Qt releases better support for QDockWidget.

我希望有更多的功能添加到QDockWidget API。这是一个伟大的API，但有几个领域，仍然非常缺乏。例如，此建议方法可获取标签式QDockWidget的索引（从Qt FAQ）很繁琐，容易出错。

I'm hopeful that there will be more functionality added to the QDockWidget API. It's a great API, but there are several areas that are still sorely lacking. For example, this suggested method of obtaining the index of a tabbed QDockWidget (right from the Qt FAQ) is cumbersome and error prone.

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