Checkbox 多选1

 1 procedure TfrmOptions.chk_RNAV_DISABLEClick(Sender: TObject);
 2 begin
 3   if not chk_RNAV_DISABLE.Focused then Exit;
 4 
 5   if  chk_RNAV_DISABLE.Checked then
 6   begin
 7     chk_RNAV_ENABLED.Checked:=false;
 8     chk_RNAV_DEF.Checked:=False;
 9   end else
10   begin
11     chk_RNAV_DEF.Checked:=true;
12     chk_RNAV_ENABLED.Checked:=false;
13   end;
14 end;