[英]Automatically set minimum size of JPanel
I have a subclass of JPanel
, and I want it to, as soon as its parent frame is pack()
ed, to set its minimum size to its new preferred size. 我有一个
JPanel
的子类,我希望它在其父框架被pack()
ed后立即将其最小大小设置为其新的首选大小。 I've tried using a ComponentAdapter
, but JPanel
s are by default visible; 我试过使用
ComponentAdapter
,但JPanel
默认是可见的; if I setVisible(false)
at the beginning of the constructor, the JFrame
won't make it visible again. 如果我在构造函数的开始处设置了
setVisible(false)
,则JFrame
将使其不再可见。 If I use SwingUtilities
's method to get the window root, it will return null
because it's in a constructor. 如果我使用
SwingUtilities
的方法获取窗口根,则它将返回null
因为它在构造函数中。
Is there a way to do this? 有没有办法做到这一点?
I have a subclass of JPanel, and I want it to, as soon as its parent frame is pack()ed, to set its minimum size to its new preferred size.
我有一个JPanel的子类,我希望它在其父框架被pack()处理后立即将其最小大小设置为其新的首选大小。
If you know the preferred/minimum size before the pack, set it then. 如果在装箱前知道首选/最小尺寸,则进行设置。
to set its minimum size to its new preferred size
将其最小尺寸设置为其新的首选尺寸
Certainly possible, but whether it is useful ... . 当然可以,但是是否有用。 You can override the
getMininumSize()
method to return super.getPreferredSize();
您可以重写
getMininumSize()
方法以返回super.getPreferredSize();
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