comdlg32: Add stub implementation of the Common Item dialogs.

dlls/comdlg32/Makefile.in

@@ -11,6 +11,7 @@ C_SRCS = \
 	filedlgbrowser.c \
 	finddlg.c \
 	fontdlg.c \
+	itemdlg.c \
 	printdlg.c
 
 RC_SRCS = \

dlls/comdlg32/cdlg.h

@@ -169,6 +169,10 @@ typedef struct {
 #include "shlobj.h"
 #include "shellapi.h"
 
+/* Constructors */
+HRESULT FileOpenDialog_Constructor(IUnknown *pUnkOuter, REFIID riid, void **ppv);
+HRESULT FileSaveDialog_Constructor(IUnknown *pUnkOuter, REFIID riid, void **ppv);
+
 /* ITEMIDLIST */
 
 extern LPITEMIDLIST (WINAPI *COMDLG32_PIDL_ILClone) (LPCITEMIDLIST);

dlls/comdlg32/cdlg32.c

@@ -260,7 +260,16 @@ static const IClassFactoryVtbl CDLGCF_Vtbl =
  */
 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void **ppv)
 {
+    static IClassFactoryImpl FileOpenDlgClassFactory = {{&CDLGCF_Vtbl}, FileOpenDialog_Constructor};
+    static IClassFactoryImpl FileSaveDlgClassFactory = {{&CDLGCF_Vtbl}, FileSaveDialog_Constructor};
+
     TRACE("%s, %s, %p\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 
+    if(IsEqualGUID(&CLSID_FileOpenDialog, rclsid))
+        return IClassFactory_QueryInterface(&FileOpenDlgClassFactory.IClassFactory_iface, riid, ppv);
+
+    if(IsEqualGUID(&CLSID_FileSaveDialog, rclsid))
+        return IClassFactory_QueryInterface(&FileSaveDlgClassFactory.IClassFactory_iface, riid, ppv);
+
     return CLASS_E_CLASSNOTAVAILABLE;
 }