dOPCGUI.TdOPCGUI.GetdOPCItem

get the orginal dOPCItem from dOPCServer

GetdOPCItem returns the assigned TdOPCItem for the passed control.

Delphi

function GetdOPCItem(Control: tdOPCControl; PropName: string = ''): tdopcItem;

C++

__fastcall tdopcItem GetdOPCItem(tdOPCControl Control, AnsiString PropName = '');

Remarks

If you have only one item assigned to the control, you can omit the PropName parameter.

Example

Copy Code

procedure TForm1.Button1Click(Sender: TObject); var Item : TdOPCItem; begin Item := dOPCGUI1.GetdOPCItem(Edit1); //get OPC item from control if item <> nil then //if item assigned Item.WriteSync('Hello') //write new value to item else ShowMessage('no item assigned'); end;

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