www.pudn.com > EndpointDetection_Pitch.zip > TrackControl.h

#if !defined(AFX_TRACKCONTROL_H__06A38C29_E713_4289_97B5_EC17CA3DAED0__INCLUDED_) 
#define AFX_TRACKCONTROL_H__06A38C29_E713_4289_97B5_EC17CA3DAED0__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
// TrackControl.h : header file 
// 
 
template 
///////////////////////////////////////////////////////////////////////////// 
// CTrackControl window 
 
class CTrackControl : public BaseClass 
{ 
// Construction 
public: 
	CTrackControl() 
	{ 
		m_bTracking=m_bHover=FALSE; 
	} 
	virtual ~CTrackControl() {} 
	BOOLEAN IsHover() 
	{ 
		return m_bHover; 
	} 
	 
// Implementation 
public: 
	virtual void OnHoverEnter()=0; 
	virtual void OnHoverLeave()=0; 
	 
	// Generated message map functions 
protected: 
	virtual LRESULT WindowProc(UINT nMessage, WPARAM wParam, LPARAM lParam) 
	{ 
		LRESULT nResult=BaseClass::WindowProc(nMessage,wParam,lParam); 
		switch(nMessage) 
		{ 
		case WM_MOUSEMOVE: 
			{ 
				if (!m_bTracking) 
				{ 
					TRACKMOUSEEVENT Tme; 
					Tme.cbSize = sizeof(Tme); 
					Tme.hwndTrack = GetSafeHwnd(); 
					Tme.dwFlags = TME_LEAVE|TME_HOVER; 
					Tme.dwHoverTime = 1; 
					if (_TrackMouseEvent(&Tme)) 
						m_bTracking=TRUE; 
				} 
				break;				 
			} 
		case WM_MOUSEHOVER: 
			m_bHover=TRUE; 
			OnHoverEnter(); 
			break; 
		case WM_MOUSELEAVE: 
			m_bTracking=m_bHover=FALSE; 
			OnHoverLeave(); 
			break; 
		} 
		return nResult; 
	} 
 
private: 
	BOOLEAN m_bTracking; 
	BOOLEAN m_bHover; 
}; 
 
///////////////////////////////////////////////////////////////////////////// 
 
//{{AFX_INSERT_LOCATION}} 
// Microsoft Visual C++ will insert additional declarations immediately before the previous line. 
 
#endif // !defined(AFX_TRACKCONTROL_H__06A38C29_E713_4289_97B5_EC17CA3DAED0__INCLUDED_)