CODEWITHSUNDEEP
c#eventsuser-controls
Kyle Uithoven
Kyle Uithoven

Reputation: 2444

Issue with Control MouseLeave event

It appears that when I am using the MouseLeave event to perform an action, if the user leaves the Control fast enough, it will actually skip the MouseLeave event..

The user will be out of the control and the MouseLeave event wasn't called. Now, I don't know if there is a way to fix this, or if there is a better event to use. I basically have a UserControl that has a Combobox in it. When the other scrolls over the UserControl, the ComboBox appears (works everytime), however, when they user leaves that Control to go to another one, it may or may not make the ComboBox`.Visible = false. It seems to depend on the rate of the Cursor moving.

Any ideas guys?

Upvotes: 3

Views: 1157

Answers (3)

Miguel Angelo
Miguel Angelo

Reputation: 24182

Sometime ago it happened to me! I had to hook mouse events using PInvoke, and do all the logic myself.

The following article contains details on how to hook mouse events.

http://www.codeproject.com/KB/cs/globalhook.aspx

After you manage to hook the events, you will need to do the logic of calculating the absolute position of your control, and tell whether mouse pointer is in or out. Then you need to keep track of the in/out changes, and it is all.

Long way to go... I would say this is an overkill. But if you really need it, anyway.

Upvotes: 1

David Heffernan
David Heffernan

Reputation: 612884

I'd imagine it happens when the mouse is captured: WM_MOUSELEAVE not being generated when left mouse button is held

Upvotes: 0

sobby01
sobby01

Reputation: 2154

Mouse leave event will call when you leave the control . I think you missed to registered it.

 private void comboBox1_Leave(object sender, EventArgs e)
        {

        }

You can use comboboxleave event this will call when you leave this control and that is you are expecting i think :) Don't forget to register the event first

Upvotes: 0

Related Questions