hhctrl.ocx: Declare strdupAtoW in hhctrl.h and use it instead of duplicated *ANSIToUnicode.

dlls/hhctrl.ocx/chm.c

@@ -20,18 +20,6 @@
 
 #include "hhctrl.h"
 
-static LPWSTR CHM_ANSIToUnicode(LPCSTR ansi)
-{
-    LPWSTR unicode;
-    int count;
-
-    count = MultiByteToWideChar(CP_ACP, 0, ansi, -1, NULL, 0);
-    unicode = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR));
-    MultiByteToWideChar(CP_ACP, 0, ansi, -1, unicode, count);
-
-    return unicode;
-}
-
 /* Reads a string from the #STRINGS section in the CHM file */
 static LPWSTR CHM_ReadString(CHMInfo *pChmInfo, DWORD dwOffset)
 {
@@ -70,7 +58,7 @@ static LPWSTR CHM_ReadString(CHMInfo *pChmInfo, DWORD dwOffset)
         {
             if (!szString[iPos])
             {
-                stringW = CHM_ANSIToUnicode(szString);
+                stringW = strdupAtoW(szString);
                 HeapFree(GetProcessHeap(), 0, szString);
                 return stringW;
             }

dlls/hhctrl.ocx/help.c

@@ -57,18 +57,6 @@ typedef struct tagHHInfo
 
 extern HINSTANCE hhctrl_hinstance;
 
-static LPWSTR HH_ANSIToUnicode(LPCSTR ansi)
-{
-    LPWSTR unicode;
-    int count;
-
-    count = MultiByteToWideChar(CP_ACP, 0, ansi, -1, NULL, 0);
-    unicode = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR));
-    MultiByteToWideChar(CP_ACP, 0, ansi, -1, unicode, count);
-
-    return unicode;
-}
-
 /* Loads a string from the resource file */
 static LPWSTR HH_LoadString(DWORD dwID)
 {
@@ -861,7 +849,7 @@ int WINAPI doWinMain(HINSTANCE hInstance, LPSTR szCmdLine)
     if (FAILED(OleInitialize(NULL)))
         return -1;
 
-    pHHInfo = HH_OpenHH(hInstance, HH_ANSIToUnicode(szCmdLine));
+    pHHInfo = HH_OpenHH(hInstance, strdupAtoW(szCmdLine));
     if (!pHHInfo || !HH_OpenCHM(pHHInfo) || !HH_CreateViewer(pHHInfo))
     {
         OleUninitialize();

dlls/hhctrl.ocx/hhctrl.h

@@ -70,4 +70,19 @@ BOOL CHM_OpenCHM(CHMInfo *pCHMInfo, LPCWSTR szFile);
 BOOL CHM_LoadWinTypeFromCHM(CHMInfo *pCHMInfo, HH_WINTYPEW *pHHWinType);
 void CHM_CloseCHM(CHMInfo *pCHMInfo);
 
+static inline LPWSTR strdupAtoW(LPCSTR str)
+{
+    LPWSTR ret;
+    DWORD len;
+
+    if(!str)
+        return NULL;
+
+    len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
+    ret = HeapAlloc(GetProcessHeap(), 0, len*sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, str, -1, ret, len);
+
+    return ret;
+}
+
 #endif