Run only one instance of exe at a time in vc++ mfc

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I have an dialog application and I want to run that application exe once at a time i.e. when I run the exe of that application then I can not open another instance of the same application at the same time.How can ??

Posted 17-Apr-13 20:58pm

debarunb

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max_nowak · Answer 1 · 2013-04-17T21:14:00

Solution 1

Just check on your InitInstance method (or anywhere else at the start of your program) whether a process with this name is already running. If so, exit.

Stumbled upon this quickly

How to check if an application is already running [^]

Posted 17-Apr-13 21:14pm

max_nowak

Updated 17-Apr-13 21:15pm

v2

Jochen Arndt · Answer 2 · 2013-04-17T21:32:00

See the MSDN article How to write an application that supports fast user switching in Windows XP[^]. The section Detect an Existing Application Instance describes how to add code to check if another instance is already running even when started by another user.

[EDIT]
An example with good explanations can be also found at Avoiding Multiple Instances of an Application[^].
[/EDIT]