Items.CellHasRadioButton Property (ExComboBox)

Retrieves or sets a value indicating whether the cell has associated a radio button or not. To change the state for a radio cell you have to use CellState property. The cell cannot display in the same time a radio and a check button. The control fires CellStateChanged event when the cell's state has been changed. To set the cell of check type you have call CellHasCheckBox property. To add or remove a cell to a given radio group you have to use CellRadioGroup property. Use the Def property to assign radio buttons for all cells in the column. Use the CellImage property to add a single icon to a cell. Use the CellImages property to assign multiple icons to a cell. Use the CellPicture property to load a custom size picture to a cell. Use the RadioImage property to change the radio button appearance.

The following VB sample assigns a radio button to the focused cell:

With ComboBox1.Items
    .CellHasRadioButton(.FocusItem, 0) = True
    .CellRadioGroup(.FocusItem, 0) = 1234
End With

The following C++ sample assigns a radio button to the focused cell:

#include "Items.h"
CItems items = m_combobox.GetItems();
items.SetCellHasRadioButton( COleVariant( items.GetFocusItem() ), COleVariant( (long)0 ), TRUE );
items.SetCellRadioGroup( COleVariant( items.GetFocusItem() ), COleVariant( (long)0 ), 1234 );

The following VB.NET sample assigns a radio button to the focused cell:

With AxComboBox1.Items
    .CellHasRadioButton(.FocusItem, 0) = True
    .CellRadioGroup(.FocusItem, 0) = 1234
End With

The following C# sample assigns a radio button to the focused cell:

axComboBox1.Items.set_CellHasRadioButton(axComboBox1.Items.FocusItem, 0, true);
axComboBox1.Items.set_CellRadioGroup(axComboBox1.Items.FocusItem, 0, 1234);

The following VFP sample assigns a radio button to the focused cell:

with thisform.ComboBox1.Items
	.DefaultItem = .FocusItem
	.CellHasRadioButton(0,0) = .t.
	.CellRadioGroup(0,0) = 1234
endwith

Call ComboBox1.Items.CellCaption(, ComboBox1.Items.CellChecked(1234)) to get the cell's caption that's checked in the group 1234.

Note: The intersection of an item with a column defines a cell. Each cell is uniquely represented by its handle. The cell's handle is of HCELL type, that's equivalent with a long type. All properties of Items object that have two parameters Item and ColIndex, refer a cell.

The following lines are equivalents and each of them changes the bold font attribute of the first cell on the first item.

With ComboBox1
    .Items.CellBold(, .Items.ItemCell(.Items(0), 0)) = True
    .Items.CellBold(.Items(0), 0) = True
    .Items.CellBold(.Items(0)) = True
    .Items.CellBold(.Items.ItemByIndex(0)) = True
    .Items.CellBold(.Items.ItemByIndex(0), 0) = True
    .Items.CellBold(.Items(0), ComboBox1.Columns(0).Caption) = True
End With

		Type	Description
		Item as Variant	A long expression that indicates the item's handle.
		ColIndex as Variant	A long expression that indicates the cell's handle or the column's index, a string expression that indicates the column's caption or the column's key.
		Boolean	A boolean expression that indicates whether the cell contains a radio button.