error c2664 cannot convert parameter 4 from lpstr to lpcwstr VC++ 2008 (Vista)

#include <winsock.h> 
#include <windows.h>
#include <iostream> 
#include <vfw.h> 
 
 
 
 
void SetClientRect(HWND hwnd, HWND hwndMCI)
 
{
 
    RECT rect;
 
    GetWindowRect(hwndMCI, &rect);
 
    AdjustWindowRectEx(&rect, GetWindowLong(hwnd, GWL_STYLE),
 
                       FALSE, GetWindowLong(hwnd, GWL_EXSTYLE));
 
    MoveWindow(hwnd, rect.left, rect.top, rect.right - rect.left,
 
               rect.bottom - rect.top, TRUE);
 
}
 
LRESULT CALLBACK WndProc(HWND hwnd, UINT uMsg,
 
                         WPARAM wParam, LPARAM lParam)
 
{
 
    switch(uMsg)
 
    {
 
        case MCIWNDM_NOTIFYPOS:
 
        case MCIWNDM_NOTIFYSIZE:
 
            SetClientRect(hwnd, (HWND)wParam);
 
            break;
 
        case WM_DESTROY:
 
            PostQuitMessage(0);
 
            break;
 
        default:
 
            return DefWindowProc(hwnd, uMsg, wParam, lParam);
 
    }
 
    return 0;
 
}
 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
 
                                     LPSTR lpCmdLine, int nCmdShow)
 
{
 
    MSG msg;
 
    HWND hwnd;
 
    WNDCLASS wndClass;
 static TCHAR szAppName[] = TEXT("WIHOCW"); // global declaration 
 
 if (hPrevInstance == NULL)
    {
        static TCHAR szAppName[] = TEXT("WIHOCW");
 
		memset(&wndClass, 0, sizeof(wndClass));
 
        wndClass.style = CS_HREDRAW | CS_VREDRAW;
 
        wndClass.lpfnWndProc = WndProc;
 
        wndClass.hInstance = hInstance;
 
        wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
 
        wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 
         // wndClass.lpszClassName = "HELLO";  // Possible VC++ 2005 
 
// new !!!!! (13/1/2009)
 
		wndClass.lpszClassName = szAppName; 
 
 
        if (!RegisterClass(&wndClass)) return FALSE;
 
    }
 
  //  hwnd = CreateWindow("HELLO", "HELLO",  // original coding 
 
 
//------------------------------------------------------------//
 // --- *** Creates the Window for the Application -- ***/
 //----------------------------------------------------------//
 
 hwnd = CreateWindow(szAppName, szAppName,
                        WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU,
 
                        CW_USEDEFAULT, 0, CW_USEDEFAULT, 0,
 
                        NULL, NULL, hInstance, NULL);
 
 
//-------------------------------------------------------------------------------//
// --- *** MAJOR ISSUE FOR THE COMMAND TO INSERT THE VIDEO --- **** (14/01/2009)
//-------------------------------------------------------------------------------// 
 
 
//  SetClientRect(hwnd, MCIWndCreate(hwnd, hInstance, WS_VISIBLE |  WS_CHILD | MCIWNDF_SHOWALL |
  //                                MCIWNDF_NOTIFYSIZE |  MCIWNDF_NOTIFYPOS, lpCmdLine)); 
 
 
SetClientRect(hwnd, MCIWndCreate(hwnd, hInstance, WS_VISIBLE |  WS_CHILD | MCIWNDF_SHOWALL |
                                 MCIWNDF_NOTIFYSIZE |  MCIWNDF_NOTIFYPOS, lpCmdLine)); 
 
 
    ShowWindow(hwnd, nCmdShow);
 
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
 
        DispatchMessage(&msg);
 
    return msg.wParam;
 
}
                                  

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