JVCL Help: TJvAppInstances Class
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Allows you to control the number of application instances running at the same time.
TJvAppInstances = class(TComponent);
The TJvAppInstances component encapsulates the TJclAppInstance class. It allows you to control the number of application instances running at the same time. If a new instance is rejected it can send its command line and other commands to the first instance. To set a UniqueAppIdGuidStr you must call JclAppInst.JclAppInstances in the initialization section of a unit or before the forms are created (OnCreate is too late). This class is not thread safe.
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