Ticket T721936
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How to use postponed procedures

created 6 years ago

Description:
How to call code via postponed procedures?

Answer:

  1. Use the standard PostMessage:
Delphi
const UM_MYMESSAGE = WM_USER + 1; type TForm1 = class(TForm) ... procedure umMyMessage(var Message: TMessage); message UM_MYMESSAGE; ... procedure <AForm>.<AcxButton>Click(Sender: TObject); begin { <your code> } PostMessage(Handle, UM_MYMESSAGE, 0, 0); end; procedure TForm1.umMyMessage(var Message: TMessage); begin <your code> end;
  1. In newer versions of our controls you can use our TdxUIThreadSyncService class:
Delphi
uses dxThreading; procedure <AForm>.<AcxButton>Click(Sender: TObject); begin TdxUIThreadSyncService.EnqueueInvokeInUIThread(Sender, procedure () begin <your code> end ); end;

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