running VC application "ONCE" 1

[azamK]

Hi
I build an application in vc++ and I want that 'one' instance of application can be runned,in a time .that means that when I run the application, then any instance of this application can't be run in that time.
How can do this?

thanks
Azam Keypour

 

[dlkfjdlkfjdlfkd]

One way is to use CreateMutex.

#include <windows.h>

/* In real code, this should be a unique identifier */
#define MUTEX_NAME &quot;MYPROGRAM&quot;

int main(void)
{
CreateMutex(NULL, FALSE, MUTEX_NAME);
if (GetLastError() != 0) {
/* Instance of this program is already running */
return EXIT_FAILURE;
}
/* ... */