RAD Studio VCL Reference
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TThread.ReturnValue Property

Specifies the value returned to other waiting threads when the thread finishes executing.

Pascal
property ReturnValue: Integer;
C++
__property int ReturnValue;

Use ReturnValue to indicate success/failure or numeric result/output of the thread to the application or other threads. The WaitFor method returns the value stored in ReturnValue. 

 

Execute 

WaitFor 

Waiting for a Thread to Finish Executing

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