以下是一绘图软件地小部分源码，但是我在VC上运行时总是显示有一错误。本人VC刚学，求高手指点一下。
// VCutDialog.cpp : implementation file
//

#include "stdafx.h"
#include "Vcad.h"
#include "VCutDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// VCutDialog dialog


VCutDialog::VCutDialog(CWnd* pParent /*=NULL*/)
    : CDialog(VCutDialog::IDD, pParent)
{
    //{{AFX_DATA_INIT(VCutDialog)
        // NOTE: the ClassWizard will add member initialization here
    //}}AFX_DATA_INIT
}


void VCutDialog::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(VCutDialog)
        // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(VCutDialog, CDialog)
    //{{AFX_MSG_MAP(VCutDialog)
        // NOTE: the ClassWizard will add message map macros here
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// VCutDialog message handlers

void VCutDialog::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(VCutDialog)
        // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(VCutDialog, CDialog)
    //{{AFX_MSG_MAP(VCutDialog)
        // NOTE: the ClassWizard will add message map macros here
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

// VCutDialog message handlers