我需要在另一个控件的事件中找到鼠标下的控件.我可以从使用开始GetTopLevel
并迭代GetChildAtPoint
,但有更快的方法吗?
这段代码没有多大意义,但它确实避免遍历Controls集合:
[System.Runtime.InteropServices.DllImport("user32.dll")] private static extern IntPtr WindowFromPoint(Point pnt); private void Form1_MouseMove(object sender, MouseEventArgs e) { IntPtr hWnd = WindowFromPoint(Control.MousePosition); if (hWnd != IntPtr.Zero) { Control ctl = Control.FromHandle(hWnd); if (ctl != null) label1.Text = ctl.Name; } } private void button1_Click(object sender, EventArgs e) { // Need to capture to see mouse move messages... this.Capture = true; }