property Item.Checked as Boolean
Retrieves or sets a value that indicates the item's state.

TypeDescription
Boolean A Boolean expression that indicates whether the item is checked or unchecked.
The Checked property specifies whether the item is checked or un-checked. The Check property indicates whether the current item displays a check box. 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 inside. The GetChecked property gets a collection of checked items. The GetUnchecked property gets a collection of checked items. The GetRadio method gets a safe array with the radio-items being checked within a radio group. 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 check-buttons?

VBA (MS Access, Excell...)

With Ribbon1
	With .Items
		With .Add("",2)
			.GroupPopup = 3 ' GroupPopupEnum.exNoGroupPopupFrame Or GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Check 1")
					.Check = True
					.Checked = True
				End With
				.Add("Check 2").Check = True
			End With
		End With
	End With
	.Refresh 
End With

VB6

With Ribbon1
	With .Items
		With .Add("",2)
			.GroupPopup = GroupPopupEnum.exNoGroupPopupFrame Or GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Check 1")
					.Check = True
					.Checked = True
				End With
				.Add("Check 2").Check = True
			End With
		End With
	End With
	.Refresh 
End With

VB.NET

With Exribbon1
	With .Items
		With .Add("",2)
			.GroupPopup = exontrol.EXRIBBONLib.GroupPopupEnum.exNoGroupPopupFrame Or exontrol.EXRIBBONLib.GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Check 1")
					.Check = True
					.Checked = True
				End With
				.Add("Check 2").Check = True
			End With
		End With
	End With
	.Refresh()
End With

VB.NET for /COM

With AxRibbon1
	With .Items
		With .Add("",2)
			.GroupPopup = EXRIBBONLib.GroupPopupEnum.exNoGroupPopupFrame Or EXRIBBONLib.GroupPopupEnum.exGroupPopup
			With .Items
				With .Add("Check 1")
					.Check = True
					.Checked = True
				End With
				.Add("Check 2").Check = 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 'EXRIBBONLib' for the library: 'ExRibbon 1.0 Control Library'

	#import <ExRibbon.dll>
	using namespace EXRIBBONLib;
*/
EXRIBBONLib::IRibbonPtr spRibbon1 = GetDlgItem(IDC_RIBBON1)->GetControlUnknown();
EXRIBBONLib::IItemsPtr var_Items = spRibbon1->GetItems();
	EXRIBBONLib::IItemPtr var_Item = var_Items->Add(L"",long(2),vtMissing);
		var_Item->PutGroupPopup(EXRIBBONLib::GroupPopupEnum(EXRIBBONLib::exNoGroupPopupFrame | EXRIBBONLib::exGroupPopup));
		EXRIBBONLib::IItemsPtr var_Items1 = var_Item->GetItems();
			EXRIBBONLib::IItemPtr var_Item1 = var_Items1->Add(L"Check 1",vtMissing,vtMissing);
				var_Item1->PutCheck(VARIANT_TRUE);
				var_Item1->PutChecked(VARIANT_TRUE);
			var_Items1->Add(L"Check 2",vtMissing,vtMissing)->PutCheck(VARIANT_TRUE);
spRibbon1->Refresh();

C++ Builder

Exribbonlib_tlb::IItemsPtr var_Items = Ribbon1->Items;
	Exribbonlib_tlb::IItemPtr var_Item = var_Items->Add(L"",TVariant(2),TNoParam());
		var_Item->GroupPopup = Exribbonlib_tlb::GroupPopupEnum::exNoGroupPopupFrame | Exribbonlib_tlb::GroupPopupEnum::exGroupPopup;
		Exribbonlib_tlb::IItemsPtr var_Items1 = var_Item->Items;
			Exribbonlib_tlb::IItemPtr var_Item1 = var_Items1->Add(L"Check 1",TNoParam(),TNoParam());
				var_Item1->Check = true;
				var_Item1->Checked = true;
			var_Items1->Add(L"Check 2",TNoParam(),TNoParam())->Check = true;
Ribbon1->Refresh();

C#

exontrol.EXRIBBONLib.Items var_Items = exribbon1.Items;
	exontrol.EXRIBBONLib.Item var_Item = var_Items.Add("",2,null);
		var_Item.GroupPopup = exontrol.EXRIBBONLib.GroupPopupEnum.exNoGroupPopupFrame | exontrol.EXRIBBONLib.GroupPopupEnum.exGroupPopup;
		exontrol.EXRIBBONLib.Items var_Items1 = var_Item.Items;
			exontrol.EXRIBBONLib.Item var_Item1 = var_Items1.Add("Check 1",null,null);
				var_Item1.Check = true;
				var_Item1.Checked = true;
			var_Items1.Add("Check 2",null,null).Check = true;
exribbon1.Refresh();

JScript/JavaScript

<BODY onload='Init()'>
<OBJECT CLASSID="clsid:DDF58CFA-750F-45E0-8A00-CFBE431702E2" id="Ribbon1"></OBJECT>

<SCRIPT LANGUAGE="JScript">
function Init()
{
	var var_Items = Ribbon1.Items;
		var var_Item = var_Items.Add("",2,null);
			var_Item.GroupPopup = 3;
			var var_Items1 = var_Item.Items;
				var var_Item1 = var_Items1.Add("Check 1",null,null);
					var_Item1.Check = true;
					var_Item1.Checked = true;
				var_Items1.Add("Check 2",null,null).Check = true;
	Ribbon1.Refresh();
}
</SCRIPT>
</BODY>

VBScript

<BODY onload='Init()'>
<OBJECT CLASSID="clsid:DDF58CFA-750F-45E0-8A00-CFBE431702E2" id="Ribbon1"></OBJECT>

<SCRIPT LANGUAGE="VBScript">
Function Init()
	With Ribbon1
		With .Items
			With .Add("",2)
				.GroupPopup = 3 ' GroupPopupEnum.exNoGroupPopupFrame Or GroupPopupEnum.exGroupPopup
				With .Items
					With .Add("Check 1")
						.Check = True
						.Checked = True
					End With
					.Add("Check 2").Check = True
				End With
			End With
		End With
		.Refresh 
	End With
End Function
</SCRIPT>
</BODY>

C# for /COM

EXRIBBONLib.Items var_Items = axRibbon1.Items;
	EXRIBBONLib.Item var_Item = var_Items.Add("",2,null);
		var_Item.GroupPopup = EXRIBBONLib.GroupPopupEnum.exNoGroupPopupFrame | EXRIBBONLib.GroupPopupEnum.exGroupPopup;
		EXRIBBONLib.Items var_Items1 = var_Item.Items;
			EXRIBBONLib.Item var_Item1 = var_Items1.Add("Check 1",null,null);
				var_Item1.Check = true;
				var_Item1.Checked = true;
			var_Items1.Add("Check 2",null,null).Check = true;
axRibbon1.Refresh();

X++ (Dynamics Ax 2009)

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

	super();

	var_Items = exribbon1.Items(); com_Items = var_Items;
		var_Item = com_Items.Add("",COMVariant::createFromInt(2)); com_Item = var_Item;
			com_Item.GroupPopup(3/*exNoGroupPopupFrame | exGroupPopup*/);
			var_Items1 = com_Item.Items(); com_Items1 = var_Items1;
				var_Item1 = com_Items1.Add("Check 1"); com_Item1 = var_Item1;
					com_Item1.Check(true);
					com_Item1.Checked(true);
				var_Item2 = COM::createFromObject(com_Items1.Add("Check 2")); com_Item2 = var_Item2;
				com_Item2.Check(true);
	exribbon1.Refresh();
}

Delphi 8 (.NET only)

with AxRibbon1 do
begin
	with Items do
	begin
		with Add('',TObject(2),Nil) do
		begin
			GroupPopup := Integer(EXRIBBONLib.GroupPopupEnum.exNoGroupPopupFrame) Or Integer(EXRIBBONLib.GroupPopupEnum.exGroupPopup);
			with Items do
			begin
				with Add('Check 1',Nil,Nil) do
				begin
					Check := True;
					Checked := True;
				end;
				Add('Check 2',Nil,Nil).Check := True;
			end;
		end;
	end;
	Refresh();
end

Delphi (standard)

with Ribbon1 do
begin
	with Items do
	begin
		with Add('',OleVariant(2),Null) do
		begin
			GroupPopup := Integer(EXRIBBONLib_TLB.exNoGroupPopupFrame) Or Integer(EXRIBBONLib_TLB.exGroupPopup);
			with Items do
			begin
				with Add('Check 1',Null,Null) do
				begin
					Check := True;
					Checked := True;
				end;
				Add('Check 2',Null,Null).Check := True;
			end;
		end;
	end;
	Refresh();
end

VFP

with thisform.Ribbon1
	with .Items
		with .Add("",2)
			.GroupPopup = 3 && GroupPopupEnum.exNoGroupPopupFrame Or GroupPopupEnum.exGroupPopup
			with .Items
				with .Add("Check 1")
					.Check = .T.
					.Checked = .T.
				endwith
				.Add("Check 2").Check = .T.
			endwith
		endwith
	endwith
	.Refresh
endwith

dBASE Plus

local oRibbon,var_Item,var_Item1,var_Item2,var_Items,var_Items1

oRibbon = form.Activex1.nativeObject
var_Items = oRibbon.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 3 /*exNoGroupPopupFrame | exGroupPopup*/
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Check 1")
				var_Item1.Check = true
				var_Item1.Checked = true
			// var_Items1.Add("Check 2").Check = true
			var_Item2 = var_Items1.Add("Check 2")
			with (oRibbon)
				TemplateDef = [Dim var_Item2]
				TemplateDef = var_Item2
				Template = [var_Item2.Check = true]
			endwith
oRibbon.Refresh()

XBasic (Alpha Five)

Dim oRibbon as P
Dim var_Item as P
Dim var_Item1 as P
Dim var_Item2 as P
Dim var_Items as P
Dim var_Items1 as P

oRibbon = topparent:CONTROL_ACTIVEX1.activex
var_Items = oRibbon.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 3 'exNoGroupPopupFrame + exGroupPopup
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Check 1")
				var_Item1.Check = .t.
				var_Item1.Checked = .t.
			' var_Items1.Add("Check 2").Check = .t.
			var_Item2 = var_Items1.Add("Check 2")
			oRibbon.TemplateDef = "Dim var_Item2"
			oRibbon.TemplateDef = var_Item2
			oRibbon.Template = "var_Item2.Check = True"

oRibbon.Refresh()

Visual Objects

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

var_Items := oDCOCX_Exontrol1:Items
	var_Item := var_Items:Add("",2,nil)
		var_Item:GroupPopup := exNoGroupPopupFrame | exGroupPopup
		var_Items1 := var_Item:Items
			var_Item1 := var_Items1:Add("Check 1",nil,nil)
				var_Item1:Check := true
				var_Item1:Checked := true
			var_Items1:Add("Check 2",nil,nil):Check := true
oDCOCX_Exontrol1:Refresh()

PowerBuilder

OleObject oRibbon,var_Item,var_Item1,var_Items,var_Items1

oRibbon = ole_1.Object
var_Items = oRibbon.Items
	var_Item = var_Items.Add("",2)
		var_Item.GroupPopup = 3 /*exNoGroupPopupFrame | exGroupPopup*/
		var_Items1 = var_Item.Items
			var_Item1 = var_Items1.Add("Check 1")
				var_Item1.Check = true
				var_Item1.Checked = true
			var_Items1.Add("Check 2").Check = true
oRibbon.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 (OLEexNoGroupPopupFrame + 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 "Check 1" Nothing Nothing to voItem1
				Handle hoItem1
				Get Create (RefClass(cComItem)) to hoItem1
				Set pvComObject of hoItem1 to voItem1
					Set ComCheck of hoItem1 to True
					Set ComChecked of hoItem1 to True
				Send Destroy to hoItem1
				Variant voItem2
				Get ComAdd of hoItems1 "Check 2" Nothing Nothing to voItem2
				Handle hoItem2
				Get Create (RefClass(cComItem)) to hoItem2
				Set pvComObject of hoItem2 to voItem2
					Set ComCheck of hoItem2 to True
				Send Destroy to hoItem2
			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
	LOCAL oItems,oItems1
	LOCAL oRibbon

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

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

		oItems := oRibbon:Items()
			oItem := oItems:Add("",2)
				oItem:GroupPopup := 3/*exNoGroupPopupFrame+exGroupPopup*/
				oItems1 := oItem:Items()
					oItem1 := oItems1:Add("Check 1")
						oItem1:Check := .T.
						oItem1:Checked := .T.
					oItems1:Add("Check 2"):Check := .T.
		oRibbon:Refresh()

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