Login | Register   
LinkedIn
Google+
Twitter
RSS Feed
Download our iPhone app
TODAY'S HEADLINES  |   ARTICLE ARCHIVE  |   FORUMS  |   TIP BANK
Browse DevX
Sign up for e-mail newsletters from DevX


Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Advanced
Apr 5, 2002

Disable Executing More than One Instance of a Program


Sometimes you don't want to enable the option of running more than one instance of an executable at a time. This can be achieved by using this fragment of code:
 
void main()
{
 HANDLE hMutex = CreateMutex(NULL, FALSE, "programName");
 // if Create mutex succeeded
	if (hMutex)
	{
		// if we already have mutex with that 
name it means another instance is
running
		if (GetLastError() == ERROR_ALREADY_EXISTS)
		{
			cout << "another instance 
of this program is running" << endl;
			return;
		}
	}
}
Tomer Abramson
 
Comment and Contribute

 

 

 

 

 


(Maximum characters: 1200). You have 1200 characters left.

 

 

Sitemap
Thanks for your registration, follow us on our social networks to keep up-to-date