starting an application

[ceodav]

hi,
how is possible to translate the function

App.PrevInstance from VB to VC++?

I want my application start only once even if i double click many times on program icon....

thanks
D.

 

[Triac]

Hi,
I don't know this VB function, but I know how to prevent you run your application many times.
Actually I have to say that this piece of code is not mine, but unfortunally I don't remember where a found it.

In your C***App class add a member function, for example

BOOL C***App::IsAlreadyRunning() {

HANDLE hEvent;
hEvent = CreateEvent(NULL, FALSE, TRUE, AfxGetAppaName());

if (GetLastError() == ERROR_ALREADY_EXISTS) {
return TRUE;
}
return FALSE;

}

So, in your C***App InitInstace method you just have to call this function and return FALSE if it is TRUE.


I use it for a "single document" application and it worked fine.

Hope this helps

 

[ceodav]

thanks a lot,
i'm using single document too, so i think it will work fine.

bye
Davide