CreateWindow Problems

Im trying to move a pocket pc game i made onto windows and my createwindow function is registering the class, but not making a window. What is wrong with this function.

Code:

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bool SimpleWindow(LPCTSTR ClassName,LPCTSTR WindowName,HWND &WindowHwnd,HINSTANCE &hInstance)
        {
        WNDCLASS wc;

        wc.style = 0;
        wc.cbClsExtra=0;
        wc.cbWndExtra=0;
        wc.lpfnWndProc = MainWndProc;
        wc.hInstance = hInstance;
        wc.hbrBackground =(HBRUSH) (COLOR_WINDOW+1);
        wc.hCursor=0;
        wc.hIcon = 0;
        wc.lpszMenuName = 0;       
        wc.lpszClassName = ClassName;
       
        if(RegisterClass(&wc))
                {

                WindowHwnd = CreateWindow(ClassName,WindowName,WS_OVERLAPPEDWINDOW,0,0,320,320,NULL,NULL,hInstance,NULL);

                if(WindowHwnd != 0)
                        {
                        return 1;
                        }
                else
                        {
                        MessageBox(0,"Window Create Error","B",0);
                        return 0;
                        }
                }
        else
                {
                MessageBox(0,"Register Class Error","B",0);
                return 0;
                }
        }

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Nevermind i resolved the problem. I didn't have a return in my WndProc.