如何绘制没有"CreateGraphics"的控件?方法? [英] How to draw on a control which hasn't "CreateGraphics" method?

问题描述

我想创建一个函数，该函数包含在没有"CreateGraphics"方法的控件上绘制的代码(此控件位于Form上).如何创建此功能?

I want to create a function, this function contains code to draw on a control which has not "CreateGraphics" method (this control is on Form). How to create this function? Thanks.

推荐答案

可以将Graphics 实例或该Control 实例作为参数传递给函数:

Can pass Graphics instance or that Control instance as parameter to the function:

private void DrawFunction(Control control)
{
   // Create a Graphics object for the Control.
   Graphics g = control.CreateGraphics();
   // Draw shapes etc...
}

private void DrawFunction(Graphics graphics)
{
   //Draw shapes etc...
}

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