我在Form上放上一个RadioGroup,又在其中放置5个RadioButton,
然后代码如下:procedure TForm1.RadioButton1Click(Sender: TObject);
var
R:TRadioButton;
begin case R.Tag of
0:s:='A';
1:s:='B';
2:s:='C';
3:s:='D';
4:s:='E';
end;
ShowMessage(s);
//ShowMessage(IntToStr(R.Tag));end;
然后将其他的RadioButton的Click指向他,当点击其他RadioButton时,消息框显示的还是A,但当ShowMessage(IntToStr(R.Tag));可用时,消息框又能正确地显示了。不知道是怎么回事啊?
然后代码如下:procedure TForm1.RadioButton1Click(Sender: TObject);
var
R:TRadioButton;
begin case R.Tag of
0:s:='A';
1:s:='B';
2:s:='C';
3:s:='D';
4:s:='E';
end;
ShowMessage(s);
//ShowMessage(IntToStr(R.Tag));end;
然后将其他的RadioButton的Click指向他,当点击其他RadioButton时,消息框显示的还是A,但当ShowMessage(IntToStr(R.Tag));可用时,消息框又能正确地显示了。不知道是怎么回事啊?
r:=(Sender as TRadioButton);
var
R:TRadioButton;
begin
R:= Sender as TRadioButton;
case R.Tag of
0:s:='A';
1:s:='B';
2:s:='C';
3:s:='D';
4:s:='E';
end;
ShowMessage(s);
//ShowMessage(IntToStr(R.Tag));end;
procedure TForm1.RadioButton1Click(Sender: TObject);
var
R:TRadioButton;
begin
R:= Sender as TRadioButton;
case R.Tag of
0:s:='A';
1:s:='B';
2:s:='C';
3:s:='D';
4:s:='E';
end;
ShowMessage(s);
//ShowMessage(IntToStr(R.Tag));end;