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A Complete ActiveX Web Control Tutorial

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21 Jun 200617 min read 2M   20.8K   423  
This article is intended to help you get up to speed quickly with developing an ActiveX control. It will show you the basic concepts you need to know about ActiveX, such as methods, properties, and events, and how to communicate between an ActiveX control and a web page.
#pragma once
#include "maindialog.h"

// MyActiveXCtrl.h : Declaration of the CMyActiveXCtrl ActiveX Control class.


// CMyActiveXCtrl : See MyActiveXCtrl.cpp for implementation.

class CMyActiveXCtrl : public COleControl
{
	DECLARE_DYNCREATE(CMyActiveXCtrl)

// Constructor
public:
	CMyActiveXCtrl();

// Overrides
public:
	virtual void OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid);
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	virtual void DoPropExchange(CPropExchange* pPX);
	virtual void OnResetState();
	virtual DWORD GetControlFlags();

// Implementation
protected:
	~CMyActiveXCtrl();

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

	// Subclassed control support
	BOOL IsSubclassedControl();
	LRESULT OnOcmCommand(WPARAM wParam, LPARAM lParam);

// Message maps
	DECLARE_MESSAGE_MAP()

// Dispatch maps
	DECLARE_DISPATCH_MAP()

// Event maps
	DECLARE_EVENT_MAP()

// Dispatch and event IDs
public:
	enum {
		eventidParameterLoaded = 1L,
		dispidLoadParameter = 3L,
		dispidOutputParameter = 2,
		dispidInputParameter = 1
	};
public:
	CMainDialog m_MainDialog;
public:
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
protected:
	void OnInputParameterChanged(void);
	CString m_InputParameter;
	void OnOutputParameterChanged(void);
	CString m_OutputParameter;
	void LoadParameter(void);

	void FireParameterLoaded(void)
	{
		FireEvent(eventidParameterLoaded, EVENT_PARAM(VTS_NONE));
	}
};

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