ClientWinSingleInstance

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4D v20 R8



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Description

This key allows you to specify if multiple instances of the Client application can be launched simultaneously on Windows.

If the key is defined and set to true (or if the key is omitted), only a single instance of the Client application can be launched on Windows.
If the key is defined and set to false, multiple instances of the Client application can be launched on Windows.

On Windows, several instances of an application are launched when the user double-clicks or selects it multiple times. For historical reasons, 4D Client applications do not support this feature: by default, only a single instance of a 4D Client application can be opened in the same session. Passing false to the ClientWinSingleInstance key allows you to disable this historical behavior.

Example

You want to allow multiple instances of the Client application:

<Preferences4D>
   <BuildApp>
      <CS> 
         <ClientWinSingleInstance>False</ClientWinSingleInstance>
      </CS> 
   </BuildApp>
</Preferences4D>