用Visual Studio写mfc茶壶代码

以下是一个简单的 MFC 茶壶代码，用于在 Visual Studio 中绘制一个简单的茶壶：

1. 创建一个 MFC 应用程序项目。

2. 打开 Class View 窗口，右键单击该项目，然后选择添加->类。

3. 在“添加类”对话框中，选择“MFC”类类别，然后选择“MFC ActiveX 控件”类模板。

4. 在“添加 MFC ActiveX 控件”对话框中，输入“CTeaPot”作为控件类名称，然后选择“框架支持 ActiveX 控件”复选框。

5. 单击“完成”按钮，创建一个新的 MFC ActiveX 控件类。

6. 在“CTeaPot.h”文件中添加以下代码：

class CTeaPot : public COleControl
{
	DECLARE_DYNCREATE(CTeaPot)

// Construction
public:
	CTeaPot();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CTeaPot)
	public:
	virtual void OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid);
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual void DoPropExchange(CPropExchange* pPX);
	virtual void OnResetState();
	//}}AFX_VIRTUAL

// Implementation
protected:
	~CTeaPot();

	DECLARE_OLECREATE_EX(CTeaPot)    // Class factory and guid
	DECLARE_OLETYPELIB(CTeaPot)      // GetTypeInfo
	DECLARE_PROPPAGEIDS(CTeaPot)     // Property page IDs
	DECLARE_OLECTLTYPE(CTeaPot)		// Type name and misc status

// Message maps
	//{{AFX_MSG(CTeaPot)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

// Dispatch maps
	//{{AFX_DISPATCH(CTeaPot)
	afx_msg float GetHeight();
	afx_msg void SetHeight(float newVal);
	afx_msg float GetWidth();
	afx_msg void SetWidth(float newVal);
	//}}AFX_DISPATCH
	DECLARE_DISPATCH_MAP()

// Event maps
	//{{AFX_EVENT(CTeaPot)
	//}}AFX_EVENT
	DECLARE_EVENT_MAP()

// Properties
public:
	float m_fHeight;
	float m_fWidth;
};

7. 在“CTeaPot.cpp”文件中添加以下代码：

// TeaPot.cpp : Implementation of CTeaPotApp and DLL registration.

#include "stdafx.h"
#include "TeaPot.h"

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


/////////////////////////////////////////////////////////////////////////////
// CTeaPotApp

BEGIN_MESSAGE_MAP(CTeaPotApp, CWinApp)
	//{{AFX_MSG_MAP(CTeaPotApp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTeaPotApp construction

CTeaPotApp::CTeaPotApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CTeaPotApp object

CTeaPotApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CTeaPotApp initialization

BOOL CTeaPotApp::InitInstance()
{
	AfxEnableControlContainer();
	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.

#ifdef _AFXDLL
	Enable3dControls();			// Call this when using MFC in a shared DLL
#else
	Enable3dControlsStatic();	// Call this when linking to MFC statically
#endif

	return TRUE;
}

8. 在“CTeaPot.cpp”文件中，添加以下代码来实现绘制茶壶的功能：

// CTeaPot::OnDraw - Drawing function
void CTeaPot::OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
	// TODO: Replace the following code with your own drawing code.
	CPen pen(PS_SOLID, 1, RGB(255, 0, 0));
	CPen* pOldPen = pdc->SelectObject(&pen);

	pdc->MoveTo(rcBounds.left, rcBounds.top);
	pdc->LineTo(rcBounds.right, rcBounds.bottom);

	pdc->MoveTo(rcBounds.left, rcBounds.bottom);
	pdc->LineTo(rcBounds.right, rcBounds.top);

	pdc->SelectObject(pOldPen);
}

// CTeaPot::PreCreateWindow - Modify parameters for CreateWindowEx
BOOL CTeaPot::PreCreateWindow(CREATESTRUCT& cs)
{
	//cs.lpszClass = _T("STATIC");
	cs.style |= WS_CLIPCHILDREN|WS_CLIPSIBLINGS;
	return COleControl::PreCreateWindow(cs);
}

9. 在“TeaPot.idl”文件中，添加以下代码：

import "oaidl.idl";

[
    uuid(69B182FE-3142-4B7C-8AF7-99FB9E77E705),
    helpstring("TeaPot 1.0 Control"),
    control,
    threading(apartment),
    vi_progid("TeaPot.TeaPotCtrl.1"),
    progid("TeaPot.TeaPotCtrl"),
    version(1.0),
    helpfile("TeaPot.hlp"),
    event_source("com")
]
interface ITeaPot : IDispatch {
    [id(1), helpstring("property Height")] float Height;
    [id(2), helpstring("property Width")] float Width;
};

10. 在“TeaPot.rgs”文件中，添加以下代码：

HKCR
{
	TeaPot.TeaPotCtrl.1 = s 'TeaPot ActiveX Control'
	{
		CLSID = s '{02D5B4F8-7177-4E7B-8B55-5E6D4C02E8D8}'
		Insertable = s '1'
		ProgID = s 'TeaPot.TeaPotCtrl.1'
		VersionIndependentProgID = s 'TeaPot.TeaPotCtrl'
		DefaultIcon = s '%MODULE%,0'
	}
}

HKCR\CLSID
{
	{02D5B4F8-7177-4E7B-8B55-5E6D4C02E8D8} = s 'TeaPot ActiveX Control'
	{
		ProgID = s 'TeaPot.TeaPotCtrl.1'
		VersionIndependentProgID = s 'TeaPot.TeaPotCtrl'
		Description = s 'TeaPot ActiveX Control'
		Control = s ''
	}

	{F033EFE8-07B1-11D2-A4F8-0000F8756F7A} = s 'TeaPot ActiveX Control'
	{
		ProgID = s 'TeaPot.TeaPotCtrl.1'
		VersionIndependentProgID = s 'TeaPot.TeaPotCtrl'
		Description = s 'TeaPot ActiveX Control'
		OleObject = s 'TeaPot.TeaPotCtrl.1'
	}
}

HKLM
{
	Software\Classes\TeaPot.TeaPotCtrl.1 = s 'TeaPot ActiveX Control'
	{
		CLSID = s '{02D5B4F8-7177-4E7B-8B55-5E6D4C02E8D8}'
		Insertable = s '1'
		ProgID = s 'TeaPot.TeaPotCtrl.1'
		VersionIndependentProgID = s 'TeaPot.TeaPotCtrl'
		DefaultIcon = s '%MODULE%,0'
	}
}

HKLM\Software\Classes\CLSID
{
	{02D5B4F8-7177-4E7B-8B55-5E6D4C02E8D8} = s 'TeaPot ActiveX Control'
	{
		ProgID = s 'TeaPot.TeaPotCtrl.1'
		VersionIndependentProgID = s 'TeaPot.TeaPotCtrl'
		Description = s 'TeaPot ActiveX Control'
		Control = s ''
	}
}

11. 编译并运行项目，在窗体设计器中将控件拖放到窗体上，然后在属性窗口中设置控件的高度和宽度属性，即可在窗体上看到绘制的茶壶。