[SOLVED] Lazarus apps launched from RDP are not visible in TaskBar
lazarus / 34-Windows

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marclebrun · 2022-04-27 13:25

Hi,
This is mainly a Lazarus issue but it also applies to Remote Desktop
on a Windows server.

We have a app called "Menu", it has buttons that launch other
applications, some of them being written in Lazarus, and others in
WinDev.

Everything is working very well when used on a local computer or in a
remote desktop environment.

Our IT department made a ".rdp" file which starts our "Menu"
application stored in the remote desktop, and the application appears
in a local window, instead of being on the full remote desktop.

The problem is the following: the "Menu" application's taskbar icon is
visible, but the applications that are started from the Menu are not
visible : the ones that are written in WinDev show their taskbar icon,
and the ones that are written in Lazarus do not show their taskbar
icon.

Also, using Alt+Tab on the keyboard, we do not see them in the
miniatures.

But when I minimize an application, then its icon suddenly appears on
the TaskBar !

The projects are compiled with Lazarus 2.0.12.
The projects use the default icons, I didn't change anything there.
I also checked that the property ShowInTaskBar of the main form is on
stDefault

It tried with a newly created application, an empty form, without
changing any parameter, and the result is the same, so it is not
caused by something weird in my other applications 

Hopefully someone here has already encountered this problem before ?
If so, would you be so kind to guide me in the correct way to solve
this ?

Thanks.

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PascalDragon · 2022-04-28 06:56

Quote from: marclebrun on April 27, 2022, 03:25:22 pmIf so, would you
be so kind to guide me in the correct way to solve this ?

Would you please check whether setting Application.MainFormOnTaskBar
to either True or False (I think default is False) right after the
Application.Initialize in the main program file makes any difference
for you?

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marclebrun · 2022-04-29 06:45

WOAW THIS IS WONDERFUL !
I think you just saved my life !!! 

After so many years using Lazarus I didn't even know this property 
I'm adding Code: Pascal  [Select][+][-]window.onload = function(){var
x1 = document.getElementById("main_content_section"); if (x1) { var x
= document.getElementsByClassName("geshi");for (var i = 0; i
Application.MainFormOnTaskBar := True; in all my applications and it
works.

Thank you soooo much

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PascalDragon · 2022-05-02 11:31

Quote from: marclebrun on April 29, 2022, 08:45:39 amThank you soooo
much 

You're welcome.  I had a feeling that this was the problem cause that
(or something similar) is the main reason behind that property (and
there are reasons for both behaviours, that's why it's a property).