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How is message handling handled in Delphi?
Delphi Interview Questions
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How is message handling handled in Delphi?
Through event handlers. You can also define your own messages using the WMUSER constant.
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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