cpp-docs/docs/mfc/reference/codesnippet/CPP/ccombobox-class_4.cpp at main · MicrosoftDocs/cpp-docs · GitHub

Name: cpp-docs/docs/mfc/reference/codesnippet/CPP/ccombobox-class_4.cpp at main · MicrosoftDocs/cpp-docs · GitHub
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// CMyComboBox is my owner-drawn combo box derived from CComboBox. This
// example compares two items using strcmp to sort items in reverse
// alphabetical order. The combo box control was created with the
// following code:
// pmyComboBox->Create(
// WS_CHILD|WS_VISIBLE|WS_BORDER|WS_HSCROLL|WS_VSCROLL|
// CBS_SORT|CBS_OWNERDRAWVARIABLE,
// myRect, pParentWnd, 1);
//
intCMyComboBox::CompareItem(LPCOMPAREITEMSTRUCT lpCompareItemStruct)
{
int iComp = 0;
ASSERT(lpCompareItemStruct->CtlType == ODT_COMBOBOX);
 LPCTSTR lpszText1 = (LPCTSTR)lpCompareItemStruct->itemData1;
ASSERT(lpszText1 != NULL);
 LPCTSTR lpszText2 = (LPCTSTR)lpCompareItemStruct->itemData2;
ASSERT(lpszText2 != NULL);

if (NULL != lpszText1 && NULL != lpszText2)
 {
 iComp = _tcscmp(lpszText2, lpszText1);
 }

return iComp;
}