Thread: FindWindowEx - By INSTANCE not by name

By "instance" you mean the reference (like pointer)?
If so then I suppose your question is to check if that control exists in a window (if you want the control, you already have it )
Try:

Code:

MyForm.Controls.Contains(MyControl); //Returns true if MyForm has MyControl

You're trying to find the main window, or the listview's HWND?

You can try to find the window (in whatever language) by name, then see what it has for a window class. You can only search by title or by window class, so hopefully you can do a search by class.

Edit:

Also, you could always enumerate all windows, go through the list, and using GetWindowThreadProcessId and GetModuleFileNameEx you can get the name of the process that spawned the window.

To get the HWND of the listview you can use its Control ID in conjunction with GetDlgItem() (where hDlg is the listviews parent handle, and nIDDlgItem is the Control ID of the listview). Since the Control ID will stay the same in most applications, it's easier to check for that then to check for window names (which could change as you mentioned). And if there are multiple listview controls on a form then it is easier to check for the Control ID rather than the Class Name since the Control ID is unique to each control.

You can get the Control ID of the listview using something like Spy++.