>I'd like to know how to get a window handle (hWnd) in order to pass to Win32 API from VFP 5.0a.
>
>The below C-code is what I've been read from one of the thread:
>
>void GetObjectWHandle(ParamBlk *parm)
>{
> HWND hWnd;
> MHANDLE mhWnd;
>
> mhWnd=_WGetObjectWindow(&(parm->p[0].val));
> hWnd=_WhToHwnd(mhWnd);
> _RetInt((LONG)hWnd,8);
>}
>
>Then, what is the parameter type sould be specified in the FoxInfo ?
>
>FoxInfo myFoxInfo[] = {
> {"GETHWND",(FPFI) GetObjectWHandle, 1, "I"},
>};
>
>Once the .Fll have been created, what should I pass to it from a VFP form ?
>
>In Visual FoxPro:
>
>Set library to fll.fll
>hWnd=GETHWND(Thisform) && doesn't work, type miss match
>
>hWnd=GETHWND(_screen.activeform) && doesn't work. 'ACTIVEFORM' is not && an object
>
>Thanks in advance.

I use three functions in to get this information. The main window can be retrieved using MainhWnd(). Forms use:

* Or ThisForm.Caption or a literal string
lnwhandle = _WFindTitl(_SCREEN.ActiveForm.Caption)
lnhWnd = _WhTohWnd(lnwhandle)

hth,