C#

using System.Runtime.InteropServices;
<P>

[DllImport("User32.dll")]
public static extern int MessageBox(int h, string m, string c, int type);
<P>

MessageBox (0,"API Message Box","API Demo",0);

for (int i = 0; i < MySet.GetSize(); i++)
{
    MyObject* pObj = MySet.GetAt(i);
    int nPos = MyComboBox.Add(pObj->m_strText);
    MyComboBox.SetDataPtr(nPos, pObj);
}

this.cbCountyDefault.BeginUpdate();
for (int i = 0; i < m_saCountyRecords.Count; i++)
{
	GASTCountyRecord objRecord = (GASTCountyRecord)m_saCountyRecords[i];
	this.cbCountyDefault.Items.Add(objRecord);
}

this.cbCountyDefault.SelectedIndex = 0;
this.cbCountyDefault.EndUpdate();

MessageBox.Show(cbCountyDefault.SelectedItem.ToString());
MessageBox.Show(((GASTCountyRecord)this.cbCountyDefault.SelectedItem).ToString());

public class GASTCountyRecord : object
{
    public string m_strCode;
    public string m_strName;

    public GASTCountyRecord(string strCode, string strName)
    {
        m_strCode = strCode;
        m_strName = strName;
    }

    public string ToString()
    {   return m_strName;   }
}

public class GASTCountyRecord : object
{
    public string m_strCode;
    public string m_strName;

    public GASTCountyRecord(string strCode, string strName)
    {
        m_strCode = strCode;
        m_strName = strName;
    }

    public override string ToString()
    {   return m_strName;   }
}