Hi Ed

I used the listings for sendmessage from the API section of the UVT, so the definitions of WM_CLOSE is correct

The varible is the window handle, I am sure this is a valid window handle, as I am using getactivewindow api to get this.

I will have a look at the MS web page to see if I can get more help on this

Thanks for your help

Regards

Steven Bowskill