not loaded two time!!!

[Mihai C.]

I want a application which will not be loaded if it is already loaded.
(how I can determnine if I an in the second "instance" of this application ?
(hPrevInstance from Win31)?)

[Rotem]

Here is one option, though i bet there are better ones. You could keep a flag in the registry stating if there is a program of your running currently, then every program can check the flag and if it TRUE than it should close itself.

-----------------------------------------
Rotem Bentzur
Rotem.Bentzur@ecitele.com

Feel free to send questions.....

[Oleg Lobach]

The are some ways, just now I remember two of them:

1. Use FindWindow

HWND hExist=FindWindow (0,szYourWindowTitle);
if (hExist)
return FALSE;



2.Create Mutex like this:

CreateMutex(NULL,TRUE,szAnyText); // mutex will be automatically deleted when process ends.
BOOL bAlreadyRunning = (GetLastError() == ERROR_ALREADY_EXISTS);
if(bAlreadyRunning){
char szMsg [256];
strcpy (szMsg, "Application already started");
m_pMainWnd->MessageBox (szMsg, "BLA_BLA_BLA",
MB_OK | MB_ICONWARNING | MB_APPLMODAL);
return FALSE;
}





The code above shouldbe placed in InitInstance.

Good luck,
Oleg.

[MikeL]

Ok then, how can you then open up any files passed as parameters in the first instance.

[Martin Speiser]

Hi,

it's shown in the MSDN. Search for the article ID Q141752.

Martin

[Oleg Lobach]

Please, can you describe your problem in more details. What do you want as the result?

Oleg.