请教CListBox::AddString 没有显示?

Question

// Dialog Data
//{{AFX_DATA(CRegisterDailog)
enum { IDD = IDD_DIALOG1 };
CListBox m_ctrlIncome;BOOL CRegisterDailog::OnInitDialog() 
{
CDialog::OnInitDialog();

// TODO: Add extra initialization here
m_ctrlIncome.AddString("500");
m_ctrlIncome.AddString("500-1000");
m_ctrlIncome.AddString("1000-2000");

return TRUE;  // return TRUE unless you set the focus to a control
              // EXCEPTION: OCX Property Pages should return FALSE
}运行后,编辑框里为什么没有显示?

Answer 1

AddString()后加
m_ctrlIncome.SetCurSel(0);

Answer 2

加上一句
UpdateData(FALSE);

Answer 3

// Dialog Data 
//{{AFX_DATA(CRegisterDailog) 
enum { IDD = IDD_DIALOG1 }; 
CListBox m_ctrlIncome; BOOL CRegisterDailog::OnInitDialog() 
{ 
CDialog::OnInitDialog(); // TODO: Add extra initialization here 
m_ctrlIncome.AddString("500"); 
m_ctrlIncome.AddString("500-1000"); 
m_ctrlIncome.AddString("1000-2000"); 
UpdateData(FALSE);
return TRUE;  // return TRUE unless you set the focus to a control 
              // EXCEPTION: OCX Property Pages should return FALSE 
}