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Article #17043: How do I use TRadioGroup?

 Question and Answer Database

FAQ2043C.txt   How do I use TRadioGroup?
Category   :VCL
Platform    :All
Product    :C++Builder  3.x

Question:
I know this sounds like a dumb question, but how do I use the
TRadioGroup?  I put one down and then place TRadioButtons on
top of it, but it still groups the radio buttons to the form
not the radio group.

Answer:
Chances are this user really wants to be using a TGroupBox
To use the TRadioGroup you have to add the RadioButtons to the 
Group using the Items property of the 
TRadioGroup.  The selected Radio button is the one that is
indexed in the ItemIndex property of the RadioGroup.  Following
is a snippet of code that illustrates the correct way to use the 
TRadioGroup:

void __fastcall TForm1::FormCreate(TObject *Sender)

{
  RadioGroup1->Items->Add("Tara Martin");
  RadioGroup1->Items->Add("Austin Powers");
  RadioGroup1->ItemIndex = 2;
}


void __fastcall TForm1::RadioGroup1Click(TObject *Sender)

{
  if (RadioGroup1->Items->Strings[RadioGroup1->ItemIndex] == "Tara Martin")
     ShowMessage ("Tara Martin is selected");
  else 
     ShowMessage ("Austin Powers is selected");
}

5/18/98 8:50:41 AM
 

Last Modified: 01-SEP-99