Use lstrcmpiA in preference to strcasecmp.

dlls/shell32/dialogs.c

@@ -283,7 +283,7 @@ void FillList (HWND hCb, char *pszLatest)
 
         if (NULL != pszLatest)
             {
-            if (!strcasecmp (pszCmd, pszLatest))
+            if (!lstrcmpiA(pszCmd, pszLatest))
                 {
                 /*
                 sprintf (szDbgMsg, "Found existing (%d).\n", Nix) ;

dlls/shell32/folders.c

@@ -328,7 +328,7 @@ static HRESULT WINAPI IExtractIconW_fnGetIconLocation(
 
 	      found = TRUE;
 	    }
-	    else if (!strcasecmp(sTemp, "lnkfile"))
+	    else if (!lstrcmpiA(sTemp, "lnkfile"))
 	    {
 	      /* extract icon from shell shortcut */
 	      IShellFolder* dsf;

dlls/shell32/shellpath.c

@@ -365,7 +365,7 @@ static BOOL PathIsExeA (LPCSTR lpszPath)
 	TRACE("path=%s\n",lpszPath);
 
 	for(i=0; lpszExtensions[i]; i++)
-	  if (!strcasecmp(lpszExtension,lpszExtensions[i])) return TRUE;
+	  if (!lstrcmpiA(lpszExtension,lpszExtensions[i])) return TRUE;
 
 	return FALSE;
 }

dlls/shell32/shlfolder.c

@@ -422,7 +422,7 @@ HRESULT SHELL32_GetItemAttributes (IShellFolder * psf, LPCITEMIDLIST pidl, LPDWO
 	if (SFGAO_LINK & *pdwAttributes) {
 	    char ext[MAX_PATH];
 
-	    if (!_ILGetExtension(pidl, ext, MAX_PATH) || strcasecmp(ext, "lnk"))
+	    if (!_ILGetExtension(pidl, ext, MAX_PATH) || lstrcmpiA(ext, "lnk"))
 		*pdwAttributes &= ~SFGAO_LINK;
 	}
     } else {
@@ -469,7 +469,7 @@ HRESULT SHELL32_CompareIDs (IShellFolder * iface, LPARAM lParam, LPCITEMIDLIST p
     /* test for name of pidl */
     _ILSimpleGetText (pidl1, szTemp1, MAX_PATH);
     _ILSimpleGetText (pidl2, szTemp2, MAX_PATH);
-    nReturn = strcasecmp (szTemp1, szTemp2);
+    nReturn = lstrcmpiA (szTemp1, szTemp2);
     if (nReturn < 0)
         return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
     else if (nReturn > 0)

dlls/shell32/shlview.c

@@ -454,7 +454,7 @@ static INT CALLBACK ShellView_ListViewCompareItems(LPVOID lParam1, LPVOID lParam
         {
             _ILGetFileAttributes(pItemIdList1, strName1, MAX_PATH);
             _ILGetFileAttributes(pItemIdList2, strName2, MAX_PATH);
-            nDiff = strcasecmp(strName1, strName2);
+            nDiff = lstrcmpiA(strName1, strName2);
         }
         /* Sort by FileName: Folder or Files can be sorted */
         else if(pSortInfo->nHeaderID == LISTVIEW_COLUMN_NAME || bIsBothFolder)
@@ -462,7 +462,7 @@ static INT CALLBACK ShellView_ListViewCompareItems(LPVOID lParam1, LPVOID lParam
             /* Sort by Text */
             _ILSimpleGetText(pItemIdList1, strName1, MAX_PATH);
             _ILSimpleGetText(pItemIdList2, strName2, MAX_PATH);
-            nDiff = strcasecmp(strName1, strName2);
+            nDiff = lstrcmpiA(strName1, strName2);
         }
         /* Sort by File Size, Only valid for Files */
         else if(pSortInfo->nHeaderID == LISTVIEW_COLUMN_SIZE)
@@ -475,7 +475,7 @@ static INT CALLBACK ShellView_ListViewCompareItems(LPVOID lParam1, LPVOID lParam
             /* Sort by Type */
             _ILGetFileType(pItemIdList1, strName1, MAX_PATH);
             _ILGetFileType(pItemIdList2, strName2, MAX_PATH);
-            nDiff = strcasecmp(strName1, strName2);
+            nDiff = lstrcmpiA(strName1, strName2);
         }
     }
     /*  If the Date, FileSize, FileType, Attrib was the same, sort by FileName */
@@ -484,7 +484,7 @@ static INT CALLBACK ShellView_ListViewCompareItems(LPVOID lParam1, LPVOID lParam
     {
         _ILSimpleGetText(pItemIdList1, strName1, MAX_PATH);
         _ILSimpleGetText(pItemIdList2, strName2, MAX_PATH);
-        nDiff = strcasecmp(strName1, strName2);
+        nDiff = lstrcmpiA(strName1, strName2);
     }
 
     if(!pSortInfo->bIsAscending)