Thanks to S. Brent Faulkner for forwording fragment to me....

static const TCHAR szTrayClass[] = _T("Shell_TrayWnd");
static const TCHAR szTaskClass[] = _T("MSTaskSwWClass");

void CHiddenDialog::RemoveFromTaskbar()
{
        ASSERT(::IsWindow(m_hWnd));

        // Get the taskbar's window handle
        HWND hwTray = ::FindWindowEx(NULL, NULL, szTrayClass, NULL);
        HWND hwTask = ::FindWindowEx(hwTray, NULL, szTaskClass, NULL);
        ASSERT( NULL != hwTask );

        // Get id of the shell's hook message
        UINT nMsg = ::RegisterWindowMessage( _T("SHELLHOOK") );
        ASSERT( NULL != nMsg );

        // Fake destruction of the window
        ::PostMessage(hwTask, nMsg, HSHELL_WINDOWDESTROYED, (LPARAM)m_hWnd);

So, is there a way to tell that a screen saver has been activated, and
lower your window, or is there some other way to hide the app from the
taskbar?

Thanks for your help!

        To prevent the window from being placed on the taskbar,
        create the window by calling CreateWindowEx and
        include the WS_EX_TOOLWINDOW style.
        As an alternative, you can create a hidden window
        and make it the owner of your primary window.

--
(My return address is intentionally invalid to foil spammers.  Delete the
".---" to get my real address.  I do this on my own time with my own money;
my responses are not to be considered official technical support or advice.)

Alan Robinson wrote ...

[snip]

Alan,

For NT check out kb-article Q150785.

For Win95, use TOOLHELP32 and check for the extension .scr
for all running processes. If a process is found with this
extension it's a screen saver if it has a window that is
either top-most, full-screen, or has no parent.
See WDJ February 1997 for sample code.

Cheers,
Patrik

-----------------------------------------------------------------

AU-System Network AB

Raymond,

How can this work for a dialog?

--Brent

Chris
--
======================================================================

     Chris Becke                        <http://www.dbn.lia.net/chris>
======================================================================

Since you don't use CreateWindowEx to create dialogs, the first
sentence doesn't help you.  But the second sentence does.  When
you create a dialog box, one of the parameters is hwndOwner.
Pass a handle to a hidden window.

On Tue, 18 Mar 1997 11:30:20 -0800, "S. Brent Faulkner"

Can we see the first few lines of your dialog template (in the .rc
file)?

You should add WS_EX_TOOLWINDOW to the EXSTYLE and make sure to remove
WS_EX_APPWINDOW.

HTH

---------------------------------
Aaron J Margosis

Work phone:  703-873-2622 (703-USE-A-MAC ??!!)

--Brent

So that's the trick... I was missing the change to the dialog template.

THANKS!!!!!!

--Brent