[AccessD] What is App.hInstance in Access

No, that parameter refers to the parent instance handle, not the window
handle.

However, according to MSDN, this value is ignored in Windows NT/2000/XP,
so you could just put 0& in its place.

If you wish to cater to the elite Windows 95/98/ME crowd, you need to
use the following code to get the Instance handle from the Application
window:

Private Const GWL_HINSTANCE = (-6)

Private Declare Function GetWindowLong Lib "user32" _
  Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As
Long

GetWindowLong(hWndAccessApp, GWL_HINSTANCE)


-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Colby, John
Sent: Wednesday, November 03, 2004 9:23 AM
To: 'Access Developers discussion and problem solving'
Subject: [AccessD] What is App.hInstance in Access

In looking over the time sync stuff I found a class and module to
replace the winsock OCX control.  It has a call:

    p_lngWindowHandle = CreateWindowEx(0&, "STATIC", "SOCKET_WINDOW",
0&, 0&, 0&, 0&, 0&, 0&, 0&, App.hInstance, ByVal 0&)

which fails on App.hInstance.  I'm assuming that this is a handle to the
application window.  Is there an equivelent in VBA?  I think I solved
that one by:

    p_lngWindowHandle = CreateWindowEx(0&, "STATIC", "SOCKET_WINDOW",
0&, 0&, 0&, 0&, 0&, 0&, 0&, Application.hWndAccessApp, ByVal 0&)

However I am now getting a compile error on:

    m_lngResolveMessage = RegisterWindowMessage(App.EXEName &
".ResolveMessage")

There is no apparent equivelent property in the Application object.
Does anyone know what I would use here?

John W. Colby
The DIS Database Guy



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