#include<afxwin.h>



class CHelloApp:public CWinApp
{
public:
    virtual BOOL InitInstance();                         //虚函数
};

CHelloApp theApp;              //建立实例

class CMainFrame:public CFrameWnd
{
public:
    CMainFrame()
    {
        Create(NULL,"我的窗口",WS_OVERLAPPEDWINDOW,CRect(0,0,400,300));
    }
protected:
    afx_msg void OnLButtonDown(UINT nFlags,CPoint point);

    DECLARE_MESSAGE_MAP()
};


BEGIN_MESSAGE_MAP(CMainFrame,CFrameWnd)
ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()


void CMainFrame::OnLButtonDown(UINT nFlags,CPoint point)
{
    MessageBox("你好，我的Visual C++世界！","李亚运",0);
    CFrameWnd::OnLButtonDown(nFlags,point);
}

BOLL CHelloApp::InitInstance()
{
    m_pMainWnd=new CMainFrame();
    m_pMainWnd->ShowWindow(m_nCmdShow);
    m_pMainWnd->UpdateWindow();
    return TRUE;
}
上述为代码，
C:\Documents and Settings\GWOLF18\桌面\垃圾\test\test.cpp(38) : error C2143: syntax error : missing ';' before 'tag::id'
C:\Documents and Settings\GWOLF18\桌面\垃圾\test\test.cpp(38) : error C2501: 'BOLL' : missing storage-class or type specifiers
C:\Documents and Settings\GWOLF18\桌面\垃圾\test\test.cpp(38) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

test.obj - 3 error(s), 0 warning(s)
这个是错误，怎么回事？

哎，果然BOOL这点错了，谢谢了，这就是我的整个代码了