Problem with subclassing ListCtrl

[bobbyb]

I tried to subclass a ListCtrl (SysListView32-CommonCtrl) in a DialogBox by calling

OldListCtrlWndProc = ( WNDPROC )::SetWindowLong( m_hWndListCtrl, GWL_WNDPROC, ( DWORD )NewListCtrlWndProc );

in the WM_INITDIALOG-Handler, with

LRESULT ( CALLBACK* OldListCtrlWndProc )( HWND, UINT, WPARAM, LPARAM );

LRESULT CALLBACK NewListCtrlWndProc( HWND hWnd, WORD Message, WPARAM wParam, LPARAM lParam )
{
return CallWindowProc( OldListCtrlWndProc, hWnd, Message, wParam, lParam );
}

Whenever this code is in effect, the background and frame of my ListCtrl isn't painted anymore. The Items and subitems as well as the header-control are drawn correctly.

I abused the CANCEL-Button to toggle old and new ListCtrl-WndProc. With Spy++ I investigated the Messages, the control receives, either with the new and the old (original) WndProc but I couldn't make out any difference asides the fact, that in Spy++-properties-window the address of the windows-procedure changes. (When the new proc is active, it has a strange address of 0xffff****, followed by "(As subclass)", in contrast to 0x0******* (Unicode) with the original one.)

Any ideas? I browsed the web for this problem for serveral days, but nobody seems to have a problem like this one.

Thanks in advance