🚀 go-pugleaf

Sarir Khamsi (khamsi@ll.mit.edu) wrote:
> Yo,
> 
> Does somebody have a code segment that will display a message window
> (with OK button) stating that the program is currently running? I am
> using the condition :
> 
>    if( hPrevInstance)
>       return FALSE;
> 
> in my WinMain() to check currently, but it tells the user nothing.
> Thanks in advance.
> 
You ought to be able to use: MessageBox(NULL, "Program is already running!",
"Oops!", MB_OK);
You don't need an application window to use MessageBox.  This in fact is the
answer to those smartalecs who gloat that you can't write a 1-line "Hello 
World" program in Windows.  You can, and I have.

If you want something a little less rough and ready, you can query 
hPrevInstance for its main window, then send that a message of your own 
devising (WM_USER or somesuch).  You will add code to the Window procedure
so that the original instance notifies the user.

--
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