WinForms RadioGroup - Display item tooltips using ToolTipController

This example demonstrates how to use the WinForms ToolTipController component to display hints for items in a radio group.

The example assigns the ToolTipController to the radio group's ToolTipController property and handles the ToolTipController.GetActiveObjectInfo event to display an item's description in the tooltip:

private void toolTipController1_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e) {
    RadioGroup rg = e.SelectedControl as RadioGroup;
    if (rg == null) return;
    for (int i = 0; i < rGroup.Properties.Items.Count; i++) {
        Rectangle rect = rGroup.GetItemRectangle(i);
        if (rect.Contains(e.ControlMousePosition)) {
            e.Info = new ToolTipControlInfo(i, rGroup.Properties.Items[i].Description);
            break;
        }
    }
}

Files to Review

• Form1.cs (VB: Form1.vb)

Documentation

• Hints and Tooltips

See Also

• WinForms ListBoxControl - Display item tooltips

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