How can I show a Delphi non-modal form in my Outlook AddIn?

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How can I show a Delphi non-modal form in my Outlook AddIn?
How can I show a Delphi non-modal form in my Outlook AddIn? 
Victor Ulloa



I need to show a non-modal Delphi form in a Outlook add-in. My code looks like this:

procedure TAddInModule.adxQueriesControls0Click(Sender: TObject);
   f : TfrmMyform;
   f := TfrmMyform.CreateEx(self);

Everything's OK, but if we replace the "ShowModal" for simply "Show", the form opens and inmediatly closes.

What am I missing?

Posted 11 Aug, 2006 09:43:49 Top
Nicholas Glasier


If you just have f.Show then the code afterwards will run right away and the form will be freed with f.Free. Try going into a loop that stops the form being freed until you are finished with it. Something like:

while f.visible do


Posted 11 Aug, 2006 18:38:02 Top
Victor Ulloa


Oh my God! I'm embarrased! :oops:

That's so simple...

I promise not to write to the forums 'til the morning after. Sometimes at 2:00a.m. your brain is somehow disconected from the keyboard!

Posted 12 Aug, 2006 09:27:37 Top
Victor Ulloa


Hey, hey, hey!
It's no so simple...

The Outlook add-in is NOT an application, so I can't access the global Application variable...

So again... how can I show a non-modal Delphi form in a Outlook add-in
Posted 12 Aug, 2006 16:19:07 Top
Nicholas Glasier


Hi Victor, try this,

1. Add Forms to the AddinModule units uses clause. The application object is defined in that file.

2. Get a handle to the host app in your addin initialize event handler:

procedure TAddInModule.adxCOMAddInModuleAddInInitialize(Sender: TObject);
Application.Handle := GetActiveWindow;

Free it in your finalize event:

procedure TAddInModule.adxCOMAddInModuleAddInFinalize(Sender: TObject);
Application.Handle := 0;

Good luck Nick
Posted 12 Aug, 2006 16:53:39 Top
Nicholas Glasier


Something else you may need to consider Victor,

When you display a form non-modally, it is possible to click on the host app window and hide your add-in window behind it. However, your addin is considered a part of the host app by the system, so it's windows don't have an icon on the taskbar. This can make it difficult to get your addin window back on top again.

If you don't want your users to have to resize the hostapp window so they can see the addin window you are either going to have to make it StayOnTop
or maybe use a notification icon component so there is something in the icon tray they can use to get the addin window back on top easily.

Regards Nick
Posted 12 Aug, 2006 17:10:38 Top
Dmitry Kostochko

Add-in Express team

Posts: 2875
Joined: 2004-04-05
Hi Nick and Victor,

Nick, thank you for the help.

Victor, do you have any problems with non-modal forms?

Posted 14 Aug, 2006 05:10:42 Top