OnShow event
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OnShow event
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| acFormHelp component.
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| type
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| TacFormHelpOnShowEvent = procedure(Sender: TObject; HelpControl: TControl; var HelpMessage: string) of object;
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| property OnShow: TacFormHelpOnShowEvent;
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| The OnShow event occurs before appearing of the popup window with context-sensitive help. Write the OnShow event handler to make some special processing before the help window became visible on screen.
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| Use HelpControl parameter to get pointer to control from wich with the context-sensitive help was taken.
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| Use HelpMessage parameter to determinate or change the text of context-sensitive help which is about to be displayed.
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| procedure TForm1.FormHelpShow(Sender: TObject; HelpControl: TControl; var HelpMessage: string);
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| begin
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| if HelpControl.Name = 'Edit2' then
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| begin
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| FormHelp.DelayTime := 2000; // Two seconds delay
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| FormHelp.Color := $00FFFFEC;
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| FormHelp.Font.Name := 'Arial';
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| FormHelp.Font.Size := 8;
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| end;
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| if HelpMessage = '.' then HelpMessage := 'Hello World!';
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| end;
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| OnHide event.
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