dOPCGUI.RegisterGUIControl

RegisterGUIControl registers default properties and default work procedures for a TControl class.

Delphi

procedure RegisterGUIControl(GUIClass: TdOPCControlClass; PropName: string; ValueProc: TGUIClassSetValue);

C++

RegisterGUIControl(TdOPCControlClass GUIClass, AnsiString PropName, TGUIClassSetValue ValueProc);

Remarks

TdOPCGUI sets the property of the Control directly, but if you register a property with a new work procedure the default property and the default work procedure are changed (see also example below).

This change will apply to all objects of the registered class.

Example

Copy Code

procedure SetMemo(Control: tdOPCControl; var OPCValue: OleVariant);
begin
  TMemo(Control).Lines.Add(OPCValue);
end;

initialization
  RegisterGUIControl(TMemo,'lines',SetMemo); //Actually it's not possible to set property lines
end.

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