确定鼠标是否在控件上方? (在控制像素范围内) [英] Determine whether the mouse is over a control? (over a Control pixel range)

问题描述

我正在尝试编写一个函数，该函数应确定鼠标是否超出像素范围(特定控件的像素范围)

I'm trying to write a function that should determine whether the mouse is over a range in pixels (the pixel range of a specific Control)

问题是该功能仅适用于Form的边界，不适用于按钮或我测试过的任何其他控件...我缺少什么?

The problem is that the function only works for the bounds of the Form, don't work for buttons or any other control that I've tested ...what I'm missing?

''' <summary>
''' Determinates whether the mouse pointer is over a pixel range of the specified control.
''' </summary>
''' <param name="Control">The control.</param>
''' <returns>
''' <c>true</c> if mouse is inside the pixel range, <c>false</c> otherwise.
''' </returns>
Private Function MouseIsOverControl(ByVal [Control] As Control) As Boolean

    Return [Control].Bounds.Contains(MousePosition)

End Function

PS:我知道Mouse事件的用法，但是此功能仅用于常规用法.

PS: I know the usage of the Mouse events, but this function is for generic usage.

推荐答案

您需要转换 ClientRectangle .

You need to transform the MousePosition into client coordinates and test the ClientRectangle of the control.

_VB.NET

Imports System.Windows.Forms

Public Function MouseIsOverControl(ByVal c As Control) As Boolean
    Return c.ClientRectangle.Contains(c.PointToClient(Control.MousePosition))
End Function

_C#

using System.Windows.Forms;

public bool MouseIsOverControl(Control c)
{
    return c.ClientRectangle.Contains(c.PointToClient(Control.MousePosition));
}

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