CComboBox only accept number in VC++ ???

Question

I need to create a combo box in MFC /VC++ in which user can enter or select values in between 0 to 9999 only. How can I acheive this functionality.

Please Help

Answer 1

CComboBox* pCombo = (CComboBox*)GetDlgItem(IDS_COMBO1);

for (int i = 0; i < 9999; i++) pCombo->AddString(CString::Format(_T("%d"),i);

Answer 2

Try this:

CComboBox* pCombo = (CComboBox*)GetDlgItem(IDC_COMBO1);

CWnd* pComboEdit = pCombo->GetWindow(GW_CHILD);

if (pComboEdit != NULL)
    pComboEdit->ModifyStyle(0, ES_NUMBER);

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Edit: In order to restrict the number of characters/digits:

((CEdit*)pComboEdit)->LimitText(4);