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CListCtrl::SetItemData 

Sets the 32-bit application-specific value associated with the item specified by nItem.


BOOL SetItemData(
   int nItem,
      DWORD_PTR dwData 
);

Parameters

nItem

Index of the list item whose data is to be set.

dwData

A 32-bit value to be associated with the item.

Nonzero if successful; otherwise 0.

This value is the lParam member of the LVITEM structure, as described in the Platform SDK.

// The pointer to my list view control.
extern CListCtrl* pmyListCtrl;

// Set the data of each item to be equal to its index.
for (int i=0;i < pmyListCtrl->GetItemCount();i++)
{
   pmyListCtrl->SetItemData(i, i);
}

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