<div>
You have to use FindWindow() to find handle of main form of previous instance and then call ShowWindow()<br />
ziolko.
</div>


You have to use FindWindow() to find handle of main form of previous instance and then call ShowWindow()
ziolko.

<div>
<div class="content wysiwyg-content">
I hide my application to the system tray, then try to prevent another instance of the application to be run but are unable to bring the first instance to the front again.<br />
<br />
Here is my code to hide the application to the system tray:<br />
&nbsp; ShowWindow(Application.Han<wbr />dle, SW_HIDE);<br />
&nbsp; ShowWindow(Application.Mai<wbr />nForm.Hand<wbr />le, SW_HIDE);<br />
<br />
to prevent I use:<br />
&nbsp; Mutex := CreateMutex(nil, False, AppTitle);<br />
&nbsp; if (GetLastError = ERROR_ALREADY_EXISTS) or<br />
&nbsp; &nbsp; &nbsp;(Mutex = 0) then<br />
&nbsp; &nbsp; &nbsp;Application.Terminate;<br />
<br />
But how do I bring my previous instance of my application to the front?<br />
<br />
Thanx in advance!
</div>
</div>


I hide my application to the system tray, then try to prevent another instance of the application to be run but are unable to bring the first instance to the front again.

Here is my code to hide the application to the system tray:
  ShowWindow(Application.Handle, SW_HIDE);
  ShowWindow(Application.MainForm.Handle, SW_HIDE);

to prevent I use:
  Mutex := CreateMutex(nil, False, AppTitle);
  if (GetLastError = ERROR_ALREADY_EXISTS) or
     (Mutex = 0) then
     Application.Terminate;

But how do I bring my previous instance of my application to the front?

Thanx in advance!

Bring previous application instance to front

Delphi is the most powerful Object Pascal IDE and component library for cross-platform Native App Development with flexible Cloud services and broad IoT connectivity. It provides powerful VCL controls for Windows 10 and enables FMX development for Windows, Mac and Mobile. Delphi is your choice for ultrafast Enterprise Strong Development™. Look for increased memory for large projects, extended multi-monitor support, improved Object Inspector and much more. Delphi is 5x faster for development and deployment across multiple desktop, mobile, cloud and database platforms including 32-bit and 64-bit Windows 10.