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delphidelphi-xe2omnithreadlibrary

Correct installation of OmniThreadLibrary

I want to use OmniThreadLibrary in a project I am working on Delphi XE2, I've followed the instructions.

  • Add OTL folder and OTL/src to Delphi's Library Path.
  • Build both project in Delphi XE2 package and install.

The instructions are pretty simple and the OmniEventMonitor is in the palette.

However, I can not run a single one of the examples.

For example, when i try to run:

procedure TForm2.Button1Click(Sender: TObject);
begin

  Button1.Enabled := false;

  Parallel.Async(
    procedure
    begin
      // executed in background thread
      Sleep(500);
      MessageBeep($FFFFFFFF);
    end,

    Parallel.TaskConfig.OnTerminated(
      procedure (const task: IOmniTaskControl)
      begin
      // executed in main thread
      btnAsync.Enabled := true;
    end
    )
  );
end;

I get the error Undeclared Identifier Parallel.

Did I do something wrong during the installation?

Solution

  • The error message is:

    Undeclared Identifier Parallel.

    Parallel is a class (containing class methods) declared in the OtlParallel unit. Which means that if the compiler cannot see the Parallel class, then you have not added OtlParallel to your uses clause.