.NET: How to check if the mouse is in a control?

Question

i want to know if the mouse is in a particular control in .NET

private void panel1_MouseLeave(object sender, EventArgs e)
{
   if (MouseIsInControl((Control)         


        

Answer 1

No hooks or subclassing needed.

private bool MouseIsOverControl(Button btn) => 
    btn.ClientRectangle.Contains(btn.PointToClient(Cursor.Position))

This method also works if the mouse is outside of the form containing the control. It uses a button object but you can use any UI class

You can test the method easily like so:

private void button1_Click(object sender, EventArgs e)
{
    // Sleep to allow you time to move the mouse off the button
    System.Threading.Thread.Sleep(900); 

    // Try moving mouse around or keeping it over the button for different results
    if (MouseIsOverControl(button1))
         MessageBox.Show("Mouse is over the button.");
    else MessageBox.Show("Mouse is NOT over the button.");
}