mlang: Store source and destination codepage ids in IMLangConvertCharset_Initialize.

dlls/mlang/mlang.c

@@ -3563,6 +3563,9 @@ static const IMLangLineBreakConsoleVtbl IMLangLineBreakConsole_vtbl =
 struct convert_charset {
     IMLangConvertCharset IMLangConvertCharset_iface;
     LONG ref;
+
+    UINT src_cp;
+    UINT dst_cp;
 };
 
 static inline struct convert_charset *impl_from_IMLangConvertCharset(IMLangConvertCharset *iface)
@@ -3614,8 +3617,16 @@ static HRESULT WINAPI MLangConvertCharset_Initialize(IMLangConvertCharset *iface
     UINT src_cp, UINT dst_cp, DWORD prop)
 {
     struct convert_charset *This = impl_from_IMLangConvertCharset(iface);
-    FIXME("(%p)->(%u %u 0x%08x): stub\n", This, src_cp, dst_cp, prop);
-    return E_NOTIMPL;
+
+    TRACE("(%p)->(%u %u 0x%08x)\n", This, src_cp, dst_cp, prop);
+
+    if (prop)
+        FIXME("property 0x%08x not supported\n", prop);
+
+    This->src_cp = src_cp;
+    This->dst_cp = dst_cp;
+
+    return S_OK;
 }
 
 static HRESULT WINAPI MLangConvertCharset_GetSourceCodePage(IMLangConvertCharset *iface, UINT *src_cp)

include/mlang.idl

@@ -375,6 +375,17 @@ interface IEnumCodePage : IUnknown
 ]
 interface IMLangConvertCharset : IUnknown
 {
+    typedef enum tagMLCONVCHARF
+    {
+        MLCONVCHARF_AUTODETECT      = 1,
+        MLCONVCHARF_ENTITIZE        = 2,
+        MLCONVCHARF_NCR_ENTITIZE    = 2,
+        MLCONVCHARF_NAME_ENTITIZE   = 4,
+        MLCONVCHARF_USEDEFCHAR      = 8,
+        MLCONVCHARF_NOBESTFITCHARS  = 16,
+        MLCONVCHARF_DETECTJPN       = 32
+    } MLCONVCHAR;
+
     HRESULT Initialize(      
         [in] UINT uiSrcCodePage,
         [in] UINT uiDstCodePage,