ListCtrlで複数の選択されているアイテムを知る
int iCnt = 0;
int n = pList->GetNextItem(-1, LVNI_ALL|LVNI_SELECTED);
while (-1 != n)
{
TRACE("No.%d was selected\r\n", n);
iCnt++;
n = pList->GetNextItem(n, LVNI_ALL|LVNI_SELECTED);
}
TRACE("%d items selected\r\n", iCnt);