[Dev-C++] can't create RichEdit control

[Vlada D. <dj...@im...>]

Hi.
I'm trying to create an MDI child window with as a RichEdit control, so =
i can type in it. The program compiled, but when I start it, it can't =
create child window. I guess the CreateWindowEx returns NULL when =
creating the child window, because I get the message box "could not =
create child window". What could cause this? Here's the piece of code:
case WM_CREATE:
        {
            char path[]=3D"c:\\winnt\\system32\\riched20.dll\0";
            HMODULE hMod=3DLoadLibrary((LPCTSTR)&path);
            if(hMod=3D=3DNULL)
                MessageBox(hFrameWnd,"Could not load =
library","Error",MB_OK);
            CLIENTCREATESTRUCT ccs;
            ccs.hWindowMenu=3DGetSubMenu(GetMenu(hFrameWnd),1);
            ccs.idFirstChild=3DID_FIRSTCHILD;
            /*create client window*/
            =
hMDIClient=3DCreateWindowEx(0,"MDICLIENT",(LPCTSTR)NULL,WS_CHILD|WS_CLIPC=
HILDREN,CW_USEDEFAULT,
            =
CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,hFrameWnd,(HMENU)ccs.idFirstChi=
ld,
            g_hInstance,(LPVOID)&ccs);
            ShowWindow(hMDIClient,SW_SHOW);
           =20
            /*create child window*/
            =
hChildWnd=3DCreateWindowEx(WS_EX_CLIENTEDGE|WS_EX_MDICHILD,"RICHEDIT_CLAS=
S","Untitled",
            =
WS_CHILD|ES_MULTILINE|ES_AUTOVSCROLL|WS_VISIBLE,CW_USEDEFAULT,CW_USEDEFAU=
LT,300,200,hMDIClient,
            (HMENU)ccs.idFirstChild,g_hInstance,(LPVOID)lParam);
            if(!hChildWnd)
                 MessageBox(hFrameWnd,"Could not create child =
wnd","Error",MB_OK);
            ShowWindow(hChildWnd,SW_SHOW);
            nChildCount=3D1;
        }
        break;

Regards,
Vlada