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Accepted
Mario16
Asked: 2022-06-29 04:02:25 +0800 CST 2022-06-29 04:02:25 +0800 CST

Why am I getting this error? I can't write a String with a TEdit in Delphi

  • 772

Can anybody help me?

procedure TForm1.ButtonPlusLessClick(Sender: TObject);
var
pMinus: Real;

begin
  pMinus := StrToFloat(txtResult.Text);
  txtResult := FloatToStr(-1 * pMinus);
end;

The error that appears is the following: E2010 Incompatible types: 'TEdit' and 'string'.

string

1 Answers

  1. Best Answer

    txtResultis a TEdit. FloatToStrreturns a String.

    The left/right part of this mapping are not equal:

    txtResult := FloatToStr(-1 * pMinus);

    I guess you want/should do this:

    txtResult.Text := FloatToStr(-1 * pMinus);
    • 0