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Overview
This component prevents that your application may be started
more than once at a time.
To the first instance are passed the parameters with which the
second instance was started. The first instance is shown and
the second instance is closed (= never shown).
Special handling occurs when the first instance doesn't react
during 10 seconds: in this case the second instance will start
nonetheless (for the case of a crash of the first instance).
It demonstrates the use of semaphores and shared memory.
License
Postcardware: if you use this component in a program of yours, send me a (real)
postcard from your place. More information and the address can be found in the
download file. Please contact me in case of questions.
Download
oneinst.zip (7KB) TOneInstance v1.02
Announcement list
Subscribe to the announcement list to receive an email
when I release a new version.
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