cmdlistener.h

一个完整的IE插件的程序的源代码（有些参考价值）

// CmdListener.h
//
// @author christian oetterli
//

#ifndef __CMDLISTENER_H__
#define __CMDLISTENER_H__

// the CDropBar window does not receive any WM_COMMAND messages. i guess this is because 
// explorer intercepts them in some way.
//
// DropBar uses this hidden window for receiving commands.

class CCmdListener : public CWindowImpl<CCmdListener>
{
	typedef CWindowImpl<CCmdListener> super;

public:
	// initializes with DropBar.
	// @param newDropBar pointer to DropBar.
	CCmdListener(class CDropBar *newDropBar);
	virtual ~CCmdListener();

	// creates this window.
	// @param parent parent window.
	// @return TRUE if successfull.
	HWND Create(HWND parent);

	BEGIN_MSG_MAP(CCmdListener)
		MESSAGE_HANDLER(WM_COMMAND, OnCommand)
	END_MSG_MAP()

protected:
	// the Drop Bar.
	class CDropBar *dropBar;

	// @return Drop Bar.
	class CDropBar *getDropBar();

protected:
	LRESULT OnCommand(UINT msg, WPARAM wParam, LPARAM lParam, BOOL& handled);
};

#endif //__CMDLISTENER_H__