表单上的TransparencyKey属性

问题描述

我想在Windows窗体应用程序中使用Visual C#切换窗体背景透明度.

I would like to swith my form background transparency with Visual C# in a Windows Forms Application.

我用过

BackColor = Color.White;
TransparencyKey = Color.White;

现在，我想切换回不透明".我该怎么做?仅仅切换BackColor会使表单上的元素看起来很奇怪并且感觉很丑.我想有一种方法可以重置该属性.

Now I want to switch back to "not transparent". How can I accomplish that? Just switching the BackColor makes the elements on the form look strange and it feels ugly.I guess there is a way to reset the property.

推荐答案

如何将BackColor和TransparencyKey的先前值存储在局部变量中，并在要恢复为非透明状态时还原它们?例如:

How about storing the previous values of BackColor and TransparencyKey in local variables, and restoring them when you want to revert to non-transparent? For instance:

private Color _oldBG;
private Color _oldTPKey;

private void MakeTransparent() {
    _oldBG = BackColor;
    _oldTPKey = TransparencyKey;
    BackColor = Color.White;
    TransparencyKey = Color.White;
}

private void MakeNonTransparent() {
    BackColor = _oldBG;
    TransparencyKey = _oldTPKey;
}

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