property Item.Radio as Boolean
Retrieves or sets a value that indicates whether the item is of radio type.

TypeDescription
Boolean A Boolean expression that specifies whether the item displays a radio button.
The Radio property specifies whether the item displays a radio-button. The RadioGroup property specifies a group of radio-buttons.  A radio group allows a single radio-item to be checked. The Checked property specifies whether the item is checked or un-checked. The GetRadio method gets a safe array with the radio-items being checked within a radio group. Use the Background(exRadioButtonState0)/Background(exRadioButtonState1) property to specify the visual appearance of the radio-buttons in the control. Use the UseVisualTheme property to specify whether the visual appearance for the radio-buttons to be as indicated by the current XP theme. The AllowToggleRadio property on True, allows a radio button to set on zero ( unchecked ), if the user clicks twice the radio button. Usually, clicking a radio-button makes the previously checked radio-button in the same group, to be un-checked, and the newly clicked item to be checked. Now, if the AllowToggleRadio property is True, clicking again the radio-button, allows the radio-button to be un-checked, so allows a radio group to have no radio button checked. Use the ShowCheckedAsSelected property on True, to show the checked items as selected.

How can I add radio buttons to items?

VBA (MS Access, Excell...)

With ToolBar1
	With .Items
		With .Add("",2)
			.GroupPopup = 1
			With .Items
				With .Add("Radio 1",0,1000)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1001)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1003)
					.Radio = True
					.RadioGroup = 100
				End With
				.Item(1000).Checked = True
			End With
		End With
	End With
	.Refresh 
End With

VB6

With ToolBar1
	With .Items
		With .Add("",2)
			.GroupPopup = exGroupPopup
			With .Items
				With .Add("Radio 1",0,1000)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1001)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1003)
					.Radio = True
					.RadioGroup = 100
				End With
				.Item(1000).Checked = True
			End With
		End With
	End With
	.Refresh 
End With

VB.NET

With Extoolbar1
	With .Items
		With .Add("",2)
			.GroupPopup = exontrol.EXTOOLBARLib.GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Radio 1",0,1000)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1001)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1003)
					.Radio = True
					.RadioGroup = 100
				End With
				.Item(1000).Checked = True
			End With
		End With
	End With
	.Refresh()
End With

VB.NET for /COM

With AxToolBar1
	With .Items
		With .Add("",2)
			.GroupPopup = EXTOOLBARLib.GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Radio 1",0,1000)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1001)
					.Radio = True
					.RadioGroup = 100
				End With
				With .Add("Radio 2",0,1003)
					.Radio = True
					.RadioGroup = 100
				End With
				.Item(1000).Checked = True
			End With
		End With
	End With
	.Refresh()
End With

C++

/*
	Copy and paste the following directives to your header file as
	it defines the namespace 'EXTOOLBARLib' for the library: 'ExToolBar 1.0 Control Library'

	#import <ExToolBar.dll>
	using namespace EXTOOLBARLib;
*/
EXTOOLBARLib::IToolBarPtr spToolBar1 = GetDlgItem(IDC_TOOLBAR1)->GetControlUnknown();
EXTOOLBARLib::IItemsPtr var_Items = spToolBar1->GetItems();
	EXTOOLBARLib::IItemPtr var_Item = var_Items->Add(L"",long(2),vtMissing);
		var_Item->PutGroupPopup(EXTOOLBARLib::exGroupPopup);
		EXTOOLBARLib::IItemsPtr var_Items1 = var_Item->GetItems();
			EXTOOLBARLib::IItemPtr var_Item1 = var_Items1->Add(L"Radio 1",long(0),long(1000));
				var_Item1->PutRadio(VARIANT_TRUE);
				var_Item1->PutRadioGroup(100);
			EXTOOLBARLib::IItemPtr var_Item2 = var_Items1->Add(L"Radio 2",long(0),long(1001));
				var_Item2->PutRadio(VARIANT_TRUE);
				var_Item2->PutRadioGroup(100);
			EXTOOLBARLib::IItemPtr var_Item3 = var_Items1->Add(L"Radio 2",long(0),long(1003));
				var_Item3->PutRadio(VARIANT_TRUE);
				var_Item3->PutRadioGroup(100);
			var_Items1->GetItem(long(1000))->PutChecked(VARIANT_TRUE);
spToolBar1->Refresh();

C++ Builder

Extoolbarlib_tlb::IItemsPtr var_Items = ToolBar1->Items;
	Extoolbarlib_tlb::IItemPtr var_Item = var_Items->Add(L"",TVariant(2),TNoParam());
		var_Item->GroupPopup = Extoolbarlib_tlb::GroupPopupEnum::exGroupPopup;
		Extoolbarlib_tlb::IItemsPtr var_Items1 = var_Item->Items;
			Extoolbarlib_tlb::IItemPtr var_Item1 = var_Items1->Add(L"Radio 1",TVariant(0),TVariant(1000));
				var_Item1->Radio = true;
				var_Item1->RadioGroup = 100;
			Extoolbarlib_tlb::IItemPtr var_Item2 = var_Items1->Add(L"Radio 2",TVariant(0),TVariant(1001));
				var_Item2->Radio = true;
				var_Item2->RadioGroup = 100;
			Extoolbarlib_tlb::IItemPtr var_Item3 = var_Items1->Add(L"Radio 2",TVariant(0),TVariant(1003));
				var_Item3->Radio = true;
				var_Item3->RadioGroup = 100;
			var_Items1->get_Item(TVariant(1000))->Checked = true;
ToolBar1->Refresh();

C#

exontrol.EXTOOLBARLib.Items var_Items = extoolbar1.Items;
	exontrol.EXTOOLBARLib.Item var_Item = var_Items.Add("",2,null);
		var_Item.GroupPopup = exontrol.EXTOOLBARLib.GroupPopupEnum.exGroupPopup;
		exontrol.EXTOOLBARLib.Items var_Items1 = var_Item.Items;
			exontrol.EXTOOLBARLib.Item var_Item1 = var_Items1.Add("Radio 1",0,1000);
				var_Item1.Radio = true;
				var_Item1.RadioGroup = 100;
			exontrol.EXTOOLBARLib.Item var_Item2 = var_Items1.Add("Radio 2",0,1001);
				var_Item2.Radio = true;
				var_Item2.RadioGroup = 100;
			exontrol.EXTOOLBARLib.Item var_Item3 = var_Items1.Add("Radio 2",0,1003);
				var_Item3.Radio = true;
				var_Item3.RadioGroup = 100;
			var_Items1[1000].Checked = true;
extoolbar1.Refresh();

JScript/JavaScript

<BODY onload='Init()'>
<OBJECT CLASSID="clsid:DDF58CFA-750F-45E0-8A00-CFBE431702E2" id="ToolBar1"></OBJECT>

<SCRIPT LANGUAGE="JScript">
function Init()
{
	var var_Items = ToolBar1.Items;
		var var_Item = var_Items.Add("",2,null);
			var_Item.GroupPopup = 1;
			var var_Items1 = var_Item.Items;
				var var_Item1 = var_Items1.Add("Radio 1",0,1000);
					var_Item1.Radio = true;
					var_Item1.RadioGroup = 100;
				var var_Item2 = var_Items1.Add("Radio 2",0,1001);
					var_Item2.Radio = true;
					var_Item2.RadioGroup = 100;
				var var_Item3 = var_Items1.Add("Radio 2",0,1003);
					var_Item3.Radio = true;
					var_Item3.RadioGroup = 100;
				var_Items1.Item(1000).Checked = true;
	ToolBar1.Refresh();
}
</SCRIPT>
</BODY>

VBScript

<BODY onload='Init()'>
<OBJECT CLASSID="clsid:DDF58CFA-750F-45E0-8A00-CFBE431702E2" id="ToolBar1"></OBJECT>

<SCRIPT LANGUAGE="VBScript">
Function Init()
	With ToolBar1
		With .Items
			With .Add("",2)
				.GroupPopup = 1
				With .Items
					With .Add("Radio 1",0,1000)
						.Radio = True
						.RadioGroup = 100
					End With
					With .Add("Radio 2",0,1001)
						.Radio = True
						.RadioGroup = 100
					End With
					With .Add("Radio 2",0,1003)
						.Radio = True
						.RadioGroup = 100
					End With
					.Item(1000).Checked = True
				End With
			End With
		End With
		.Refresh 
	End With
End Function
</SCRIPT>
</BODY>

C# for /COM

EXTOOLBARLib.Items var_Items = axToolBar1.Items;
	EXTOOLBARLib.Item var_Item = var_Items.Add("",2,null);
		var_Item.GroupPopup = EXTOOLBARLib.GroupPopupEnum.exGroupPopup;
		EXTOOLBARLib.Items var_Items1 = var_Item.Items;
			EXTOOLBARLib.Item var_Item1 = var_Items1.Add("Radio 1",0,1000);
				var_Item1.Radio = true;
				var_Item1.RadioGroup = 100;
			EXTOOLBARLib.Item var_Item2 = var_Items1.Add("Radio 2",0,1001);
				var_Item2.Radio = true;
				var_Item2.RadioGroup = 100;
			EXTOOLBARLib.Item var_Item3 = var_Items1.Add("Radio 2",0,1003);
				var_Item3.Radio = true;
				var_Item3.RadioGroup = 100;
			var_Items1[1000].Checked = true;
axToolBar1.Refresh();

X++ (Dynamics Ax 2009)

public void init()
{
	COM com_Item,com_Item1,com_Item2,com_Item3,com_Item4,com_Items,com_Items1;
	anytype var_Item,var_Item1,var_Item2,var_Item3,var_Item4,var_Items,var_Items1;
	;

	super();

	var_Items = extoolbar1.Items(); com_Items = var_Items;
		var_Item = com_Items.Add("",COMVariant::createFromInt(2)); com_Item = var_Item;
			com_Item.GroupPopup(1/*exGroupPopup*/);
			var_Items1 = com_Item.Items(); com_Items1 = var_Items1;
				var_Item1 = com_Items1.Add("Radio 1",COMVariant::createFromInt(0),COMVariant::createFromInt(1000)); com_Item1 = var_Item1;
					com_Item1.Radio(true);
					com_Item1.RadioGroup(100);
				var_Item2 = com_Items1.Add("Radio 2",COMVariant::createFromInt(0),COMVariant::createFromInt(1001)); com_Item2 = var_Item2;
					com_Item2.Radio(true);
					com_Item2.RadioGroup(100);
				var_Item3 = com_Items1.Add("Radio 2",COMVariant::createFromInt(0),COMVariant::createFromInt(1003)); com_Item3 = var_Item3;
					com_Item3.Radio(true);
					com_Item3.RadioGroup(100);
				var_Item4 = COM::createFromObject(com_Items1.Item(COMVariant::createFromInt(1000))); com_Item4 = var_Item4;
				com_Item4.Checked(true);
	extoolbar1.Refresh();
}

Delphi 8 (.NET only)

with AxToolBar1 do
begin
	with Items do
	begin
		with Add('',TObject(2),Nil) do
		begin
			GroupPopup := EXTOOLBARLib.GroupPopupEnum.exGroupPopup;
			with Items do
			begin
				with Add('Radio 1',TObject(0),TObject(1000)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				with Add('Radio 2',TObject(0),TObject(1001)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				with Add('Radio 2',TObject(0),TObject(1003)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				Item[TObject(1000)].Checked := True;
			end;
		end;
	end;
	Refresh();
end

Delphi (standard)

with ToolBar1 do
begin
	with Items do
	begin
		with Add('',OleVariant(2),Null) do
		begin
			GroupPopup := EXTOOLBARLib_TLB.exGroupPopup;
			with Items do
			begin
				with Add('Radio 1',OleVariant(0),OleVariant(1000)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				with Add('Radio 2',OleVariant(0),OleVariant(1001)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				with Add('Radio 2',OleVariant(0),OleVariant(1003)) do
				begin
					Radio := True;
					RadioGroup := 100;
				end;
				Item[OleVariant(1000)].Checked := True;
			end;
		end;
	end;
	Refresh();
end

VFP

with thisform.ToolBar1
	with .Items
		with .Add("",2)
			.GroupPopup = 1
			with .Items
				with .Add("Radio 1",0,1000)
					.Radio = .T.
					.RadioGroup = 100
				endwith
				with .Add("Radio 2",0,1001)
					.Radio = .T.
					.RadioGroup = 100
				endwith
				with .Add("Radio 2",0,1003)
					.Radio = .T.
					.RadioGroup = 100
				endwith
				.Item(1000).Checked = .T.
			endwith
		endwith
	endwith
	.Refresh
endwith

dBASE Plus

local oToolBar,var_Item,var_Item1,var_Item2,var_Item3,var_Item4,var_Items,var_Items1

oToolBar = form.Activex1.nativeObject
var_Items = oToolBar.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 1
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Radio 1",0,1000)
				var_Item1.Radio = true
				var_Item1.RadioGroup = 100
			var_Item2 = var_Items1.Add("Radio 2",0,1001)
				var_Item2.Radio = true
				var_Item2.RadioGroup = 100
			var_Item3 = var_Items1.Add("Radio 2",0,1003)
				var_Item3.Radio = true
				var_Item3.RadioGroup = 100
			// var_Items1.Item(1000).Checked = true
			var_Item4 = var_Items1.Item(1000)
			with (oToolBar)
				TemplateDef = [Dim var_Item4]
				TemplateDef = var_Item4
				Template = [var_Item4.Checked = true]
			endwith
oToolBar.Refresh()

XBasic (Alpha Five)

Dim oToolBar as P
Dim var_Item as P
Dim var_Item1 as P
Dim var_Item2 as P
Dim var_Item3 as P
Dim var_Item4 as P
Dim var_Items as P
Dim var_Items1 as P

oToolBar = topparent:CONTROL_ACTIVEX1.activex
var_Items = oToolBar.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 1
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Radio 1",0,1000)
				var_Item1.Radio = .t.
				var_Item1.RadioGroup = 100
			var_Item2 = var_Items1.Add("Radio 2",0,1001)
				var_Item2.Radio = .t.
				var_Item2.RadioGroup = 100
			var_Item3 = var_Items1.Add("Radio 2",0,1003)
				var_Item3.Radio = .t.
				var_Item3.RadioGroup = 100
			' var_Items1.Item(1000).Checked = .t.
			var_Item4 = var_Items1.Item(1000)
			oToolBar.TemplateDef = "Dim var_Item4"
			oToolBar.TemplateDef = var_Item4
			oToolBar.Template = "var_Item4.Checked = True"

oToolBar.Refresh()

Visual Objects

local var_Item,var_Item1,var_Item2,var_Item3 as IItem
local var_Items,var_Items1 as IItems

var_Items := oDCOCX_Exontrol1:Items
	var_Item := var_Items:Add("",2,nil)
		var_Item:GroupPopup := exGroupPopup
		var_Items1 := var_Item:Items
			var_Item1 := var_Items1:Add("Radio 1",0,1000)
				var_Item1:Radio := true
				var_Item1:RadioGroup := 100
			var_Item2 := var_Items1:Add("Radio 2",0,1001)
				var_Item2:Radio := true
				var_Item2:RadioGroup := 100
			var_Item3 := var_Items1:Add("Radio 2",0,1003)
				var_Item3:Radio := true
				var_Item3:RadioGroup := 100
			var_Items1:[Item,1000]:Checked := true
oDCOCX_Exontrol1:Refresh()

PowerBuilder

OleObject oToolBar,var_Item,var_Item1,var_Item2,var_Item3,var_Items,var_Items1

oToolBar = ole_1.Object
var_Items = oToolBar.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 1
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Radio 1",0,1000)
				var_Item1.Radio = true
				var_Item1.RadioGroup = 100
			var_Item2 = var_Items1.Add("Radio 2",0,1001)
				var_Item2.Radio = true
				var_Item2.RadioGroup = 100
			var_Item3 = var_Items1.Add("Radio 2",0,1003)
				var_Item3.Radio = true
				var_Item3.RadioGroup = 100
			var_Items1.Item(1000).Checked = true
oToolBar.Refresh()

Visual DataFlex

Procedure OnCreate
	Forward Send OnCreate
	Variant voItems
	Get ComItems to voItems
	Handle hoItems
	Get Create (RefClass(cComItems)) to hoItems
	Set pvComObject of hoItems to voItems
		Variant voItem
		Get ComAdd of hoItems "" 2 Nothing to voItem
		Handle hoItem
		Get Create (RefClass(cComItem)) to hoItem
		Set pvComObject of hoItem to voItem
			Set ComGroupPopup of hoItem to OLEexGroupPopup
			Variant voItems1
			Get ComItems of hoItem to voItems1
			Handle hoItems1
			Get Create (RefClass(cComItems)) to hoItems1
			Set pvComObject of hoItems1 to voItems1
				Variant voItem1
				Get ComAdd of hoItems1 "Radio 1" 0 1000 to voItem1
				Handle hoItem1
				Get Create (RefClass(cComItem)) to hoItem1
				Set pvComObject of hoItem1 to voItem1
					Set ComRadio of hoItem1 to True
					Set ComRadioGroup of hoItem1 to 100
				Send Destroy to hoItem1
				Variant voItem2
				Get ComAdd of hoItems1 "Radio 2" 0 1001 to voItem2
				Handle hoItem2
				Get Create (RefClass(cComItem)) to hoItem2
				Set pvComObject of hoItem2 to voItem2
					Set ComRadio of hoItem2 to True
					Set ComRadioGroup of hoItem2 to 100
				Send Destroy to hoItem2
				Variant voItem3
				Get ComAdd of hoItems1 "Radio 2" 0 1003 to voItem3
				Handle hoItem3
				Get Create (RefClass(cComItem)) to hoItem3
				Set pvComObject of hoItem3 to voItem3
					Set ComRadio of hoItem3 to True
					Set ComRadioGroup of hoItem3 to 100
				Send Destroy to hoItem3
				Variant voItem4
				Get ComItem of hoItems1 1000 to voItem4
				Handle hoItem4
				Get Create (RefClass(cComItem)) to hoItem4
				Set pvComObject of hoItem4 to voItem4
					Set ComChecked of hoItem4 to True
				Send Destroy to hoItem4
			Send Destroy to hoItems1
		Send Destroy to hoItem
	Send Destroy to hoItems
	Send ComRefresh
End_Procedure

XBase++

#include "AppEvent.ch"
#include "ActiveX.ch"

PROCEDURE Main
 	LOCAL oForm
	LOCAL nEvent := 0, mp1 := NIL, mp2 := NIL, oXbp := NIL
	LOCAL oItem,oItem1,oItem2,oItem3
	LOCAL oItems,oItems1
	LOCAL oToolBar

	oForm := XbpDialog():new( AppDesktop() )
	oForm:drawingArea:clipChildren := .T.
	oForm:create( ,,{100,100}, {640,480},, .F. )
	oForm:close  := {|| PostAppEvent( xbeP_Quit )}

	oToolBar := XbpActiveXControl():new( oForm:drawingArea )
	oToolBar:CLSID  := "Exontrol.ToolBar.1" /*{DDF58CFA-750F-45E0-8A00-CFBE431702E2}*/
	oToolBar:create(,, {10,60},{610,370} )

		oItems := oToolBar:Items()
			oItem := oItems:Add("",2)
				oItem:GroupPopup := 1/*exGroupPopup*/
				oItems1 := oItem:Items()
					oItem1 := oItems1:Add("Radio 1",0,1000)
						oItem1:Radio := .T.
						oItem1:RadioGroup := 100
					oItem2 := oItems1:Add("Radio 2",0,1001)
						oItem2:Radio := .T.
						oItem2:RadioGroup := 100
					oItem3 := oItems1:Add("Radio 2",0,1003)
						oItem3:Radio := .T.
						oItem3:RadioGroup := 100
					oItems1:Item(1000):Checked := .T.
		oToolBar:Refresh()

	oForm:Show()
	DO WHILE nEvent != xbeP_Quit
		nEvent := AppEvent( @mp1, @mp2, @oXbp )
		oXbp:handleEvent( nEvent, mp1, mp2 )
	ENDDO 
RETURN