MouseHover/MouseLeave event on the whole entire window

c# winforms events mouseleave mousehover
billpg picture billpg · Jan 6, 2010 · Viewed 18.2k times · Source

I have Form subclass with handlers for MouseHover and MouseLeave. When the pointer is on the background of the window, the events work fine, but when the pointer moves onto a control inside the window, it causes a MouseLeave event.

Is there anyway to have an event covering the whole window.

(.NET 2.0, Visual Studio 2005, Windows XP.)

Answer

Ryan picture Ryan · Aug 30, 2012

Ovveride the MouseLeave event to not trigger so long as the mouse enters a child control

    protected override void OnMouseLeave(EventArgs e)
    {
        if (this.ClientRectangle.Contains(this.PointToClient(Control.MousePosition)))
            return;
        else
        {
            base.OnMouseLeave(e);
        }
    }

Related questions

How to remove all event handlers from an event

To create a new event handler on a control you can do this c.Click += new EventHandler(mainFormButton_Click); or this c.Click += mainFormButton_Click; and to remove an event handler you can do this c.Click -= mainFormButton_Click; …

Read More
How do I execute code AFTER a form has loaded?

In .NET, Windows Forms have an event that fires before the Form is loaded (Form.Load), but there is no corresponding event that is fired AFTER the form has loaded. I would like to execute some logic after the form …

Read More
Triggering a checkbox value changed event in DataGridView

I have a grid view that has a check box column, and I want to trigger a drawing event as soon as the value of the cell is toggled. I tried the ValueChaged and the CellEndEdit and BeginEdit, and chose …

Read More