帮助我GetChildAtPoint [英] help me on GetChildAtPoint

问题描述

这是我的代码。每次我运行程序它返回null.can你解决这个问题吗？

this is my code.every time i run the program it returns null.can you solve this?

Point P = new Point(64, 46);
           Control locatecontrol =this.GetChildAtPoint(P);
           Button BTN1 = new Button();
           BTN1 = (Button)locatecontrol;
           MessageBox.Show(BTN1.Text);

i有一个Button但又一次为null：|

帮助我。

i已经搜索了这个但是我无法解决我的代码。

i have a Button there but again null :|
help me.
i have searched for this but i could not solve my code.

推荐答案

如果在适当的位置有一个Button，它对我来说很好用。

我稍微改了一下，用作为代替我自己（或者你可以得到例外）：

It works fine for me, if there is a Button at the appropriate point.
I'd change it slightly and use as instead myself (or you could get casting exceptions):

Point p = new Point(64, 46);
Control c = GetChildAtPoint(p);
Button btn1 = c as Button;
if (btn1 != null)
    {
    MessageBox.Show(btn1.Text);
    }

假设此时有一个按钮，它应该可以工作，但是要设置一个断点代码的第一行并逐步查看变量 - 你需要知道GetChildAtPoint返回的是有问题。

Assuming there is a button at the point, it should work, but put a breakpoint on the first line of the code and step through looking at the variables - you need to know what GetChildAtPoint is returning is there is a problem.

你使用 RightToLeft

改回 LeftToRight 或mybe可以使用

you use RightToLeft
change back to LeftToRight or mybe can use

if(this.RightToLeft==System.Windows.Forms.RightToLeft.Yes)
   pos.x=Width-pos.x;

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