Does anybody know why 'ShowWindow(SW_HIDE)' does not work in
'OnInitDialog()' function of an dialog based app. The problem is that I have
an dialog based app with only one window (the main dialog) and I can't hide
it with ShowWindow()
Does anyone knows why?

Thanx
Sorin

Because the dialog code forces the dialog visible after you return.
You can hide it after OnInitDialog; post a user-defined message and
handle it there. Not elegant, since you get a flash of the window when
the app comes up, but otherwise it suffices.
                        joe

Joseph M. Newcomer [MVP]

Web: http://www3.pgh.net/~newcomer
MVP Tips: http://www3.pgh.net/~newcomer/mvp_tips.htm

Cause your dialog in shown in the idle loop, after oninitdialog... if you
look in DoModal(...) you'll see:

[lot of code]
    DWORD dwFlags = MLF_SHOWONIDLE;
    if (GetStyle() & DS_NOIDLEMSG)
     dwFlags |= MLF_NOIDLEMSG;
    VERIFY(RunModalLoop(dwFlags) == m_nModalResult);
[lot of code]

So you ask your window to hide before it's shown... how to get rid of this?

I guess it's not the perfect way, but simply make a new function in your
dialog (for instance DoModalNotVisible() ) in this function, you'll copy
paste the MFC DoModal code and remove the
    DWORD dwFlags = MLF_SHOWONIDLE; line...

It works for me... hope also for you...

Tenebrax

If you want a clean implementation of a hidden dialog-based
application, the best way is to make the dialog modeless. It's easy to
do, and there's sample code for doing this on my web site. See the URL
below, and go to tip 26 on the Win32 Code page.

--
Bob Moore [MVP]
http://www.mooremvp.freeserve.co.uk
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Due to an unreasonable amount of queries, I no
longer answer unsolicited email questions. Sorry,
no exceptions.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~