dbghelp: Implemented SearchTreeForFileW.

dlls/dbghelp/dbghelp.spec

@@ -26,8 +26,8 @@
 @ stdcall MapDebugInformation(long str str long)
 @ stdcall MiniDumpReadDumpStream(ptr long ptr ptr ptr)
 @ stdcall MiniDumpWriteDump(ptr long ptr long long long long)
-@ stdcall SearchTreeForFile(str str str)
-@ stub SearchTreeForFileW
+@ stdcall SearchTreeForFile(str str ptr)
+@ stdcall SearchTreeForFileW(wstr wstr ptr)
 @ stdcall StackWalk(long long long ptr ptr ptr ptr ptr ptr)
 @ stdcall StackWalk64(long long long ptr ptr ptr ptr ptr ptr)
 @ stub SymAddSymbol

dlls/dbghelp/path.c

@@ -273,14 +273,32 @@ static BOOL do_search(const char* file, char* buffer, BOOL recurse,
 }
 
 /***********************************************************************
+ *           SearchTreeForFileW (DBGHELP.@)
+ */
+BOOL WINAPI SearchTreeForFileW(PCWSTR root, PCWSTR file, PWSTR buffer)
+{
+    TRACE("(%s, %s, %p)\n",
+          debugstr_w(root), debugstr_w(file), buffer);
+    strcpyW(buffer, root);
+    return do_searchW(file, buffer, TRUE, NULL, NULL);
+}
+
+/***********************************************************************
  *           SearchTreeForFile (DBGHELP.@)
  */
 BOOL WINAPI SearchTreeForFile(PCSTR root, PCSTR file, PSTR buffer)
 {
-    TRACE("(%s, %s, %p)\n", 
-          debugstr_a(root), debugstr_a(file), buffer);
-    strcpy(buffer, root);
-    return do_search(file, buffer, TRUE, NULL, NULL);
+    WCHAR       rootW[MAX_PATH];
+    WCHAR       fileW[MAX_PATH];
+    WCHAR       bufferW[MAX_PATH];
+    BOOL        ret;
+
+    MultiByteToWideChar(CP_ACP, 0, root, -1, rootW, MAX_PATH);
+    MultiByteToWideChar(CP_ACP, 0, file, -1, fileW, MAX_PATH);
+    ret = SearchTreeForFileW(rootW, fileW, bufferW);
+    if (ret)
+        WideCharToMultiByte(CP_ACP, 0, bufferW, -1, buffer, MAX_PATH, NULL, NULL);
+    return ret;
 }
 
 /******************************************************************

include/dbghelp.h

@@ -1020,6 +1020,7 @@ BOOL WINAPI SymSetSearchPathW(HANDLE, PCWSTR);
 DWORD WINAPI GetTimestampForLoadedLibrary(HMODULE);
 BOOL WINAPI MakeSureDirectoryPathExists(PCSTR);
 BOOL WINAPI SearchTreeForFile(PCSTR, PCSTR, PSTR);
+BOOL WINAPI SearchTreeForFileW(PCWSTR, PCWSTR, PWSTR);
 typedef BOOL (CALLBACK *PENUMDIRTREE_CALLBACK)(LPCSTR, PVOID);
 BOOL WINAPI EnumDirTree(HANDLE, PCSTR, PCSTR, PSTR, PENUMDIRTREE_CALLBACK, void*);
 typedef BOOL (CALLBACK *PENUMDIRTREE_CALLBACKW)(LPCWSTR, PVOID);