从最小化状态恢复后如何重新绘制表单? [英] How do I repaint a form after it was restored from a minimized state?

问题描述

我有一个表格，我在点击按钮时绘制波形，只要我点击按钮，波形就会显示出来.现在当我最小化窗体并再次最大化它时，波形消失了.如何重新绘制它?我见过有人使用绘画事件，但我不知道如何在按钮单击事件之后/内部使用它.请帮忙.

I have a form in which i paint a waveform on a button click that is as soon as i click button, the waveform displays. Now when i minimize the form and maximize it again, the waveform disappears.How to repaint it? I have seen people using paint event but i dont know how to use it after/inside the button click event. Please help.

推荐答案

如果调用 Control.Invalidate()，Paint 事件就会发生.

If you call Control.Invalidate(), the Paint event will occur.

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