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How is message handling handled in Delphi?

Asked by: nehalshah | Member Since Sep-2006 | Asked on: Mar 25th, 2007

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delphiking

Answered On : Jan 9th, 2009

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Through event handlers. You can also define your own messages using the WMUSER constant.

  
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EditCDC

Answered On : Jul 16th, 2009

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Define custom message
const
  WM_MY_MESSAGE = WM_USER + 0;

Define handler for message
  type
  TMyForm = class(TForm)
  private
    procedure OnMyMessage(var Msg: TMessage); message WM_MY_MESSAGE;

Send or Post message
  PostMessage(self.Handle,WM_MY_MESSAGE,0,0)

  
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