CComboBox::GetItemData
Retrieves the application-supplied 32-bit value associated with the specified combo-box item.
DWORD_PTR GetItemData(
int nIndex
) const;
Parameters
- nIndex
Contains the zero-based index of an item in the combo box's list box.
Return Value
The 32-bit value associated with the item, or CB_ERR if an error occurs.
Remarks
The 32-bit value can be set with the dwItemData parameter of a SetItemData member function call. Use the GetItemDataPtr member function if the 32-bit value to be retrieved is a pointer (void*).
Example
// If any item's data is equal to zero then reset it to -1.
for (int i = 0; i < m_pComboBox->GetCount(); i++)
{
if (m_pComboBox->GetItemData(i) == 0)
{
m_pComboBox->SetItemData(i, (DWORD) -1);
}
}
Requirements
Header: afxwin.h