Given hWnd, find Window Class?

[Michael Mattias]

I have an application I am developing which uses MDI windows.

The MDI child windows may be any one of (currently) three different Window Classes.

One of these classes is "Reports;" the user may have created any number of these child windows. I want to offer the user a menu option to "close all report windows."

I can enumerate all the MDI child Windows OK, but I can't seem to figure out how to tell if this particular child Window is of window class "Report."

I hoped there might be a GetWindowLong I could use to get the Classname of a window, but I can't seem to find one.

A thought I had was to identify the report windows with a "special" value using SetWindowLong (i.e., SetWindowLong hWnd, %GWL_USERDATA, %ID_REPORT_WINDOW) to set the extra data which I can interrogate later, but that seems clunky.

Is there a better way?

Regards,
MCM

[Paul Noble]

Hi Michael,

I hope I haven't missed something obvious here - isn't it just
GetClassName() that you need ?

[Michael Mattias]

Duh, yup, GetClassName looks promising.

I was going through the help file under "GetWindowxxxxxxx"

Must be one of my fellow ethic Eastern Europeans who was in charge of naming the API calls...

MCM