error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int还请多多指教

// MainFrm.h : CMainFrame 类的接口
//

#pragma once
#include "FileView.h"
#include "ClassView.h"
#include "OutputWnd.h"
#include "PropertiesWnd.h"
using namespace std;

class CMainFrame : public CFrameWndEx
{

protected: // 仅从序列化创建
CMainFrame();
DECLARE_DYNCREATE(CMainFrame)

// 属性
public:

// 操作
public:

// 重写
public:
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
virtual BOOL LoadFrame(UINT nIDResource, DWORD dwDefaultStyle = WS_OVERLAPPEDWINDOW | FWS_ADDTOTITLE, CWnd* pParentWnd = NULL, CCreateContext* pContext = NULL);

// 实现
public:
virtual ~CMainFrame();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif

protected: // 控件条嵌入成员
CMFCMenuBar m_wndMenuBar;
CMFCToolBar m_wndToolBar;
CMFCStatusBar m_wndStatusBar;
CMFCToolBarImages m_UserImages;
CFileView m_wndFileView;
CClassView m_wndClassView;
COutputWnd m_wndOutput;
CPropertiesWnd m_wndProperties;

// 生成的消息映射函数
protected:
afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
afx_msg void OnViewCustomize();
afx_msg LRESULT OnToolbarCreateNew(WPARAM wp, LPARAM lp);
afx_msg void OnApplicationLook(UINT id);
afx_msg void OnUpdateApplicationLook(CCmdUI* pCmdUI);
DECLARE_MESSAGE_MAP()

BOOL CreateDockingWindows();
void SetDockingWindowIcons(BOOL bHiColorIcons);

public:
COLOREF;
m_CurrentColor;
int m_CurrentThickness;
afx_msg void OnColorRed();
afx_msg void OnColorBlue();
afx_msg void OnColorBlack();
afx_msg void OnLineSingle();
afx_msg void OnLineDouble();
afx_msg void OnLineTriple();
afx_msg void OnToolsLine();
afx_msg void OnToolsRectangle();
afx_msg void OnToolsCircle();
};

类型定义错误。哪一行的