笔记.txt

移动鼠标捕获鼠标当前的坐标

1.
CZuoBiaoDoc
// Implementation
public:
	CString m_strLocal;      /////储存鼠标位置字符串

2.
CZuoBiaoView
// Implementation
public:
	CPoint m_point;          /////储存鼠标当前的位置

3.
在CZuoBiaoView中添加WM_MOUSEMOVE和WM_LBUTTONDOWN消息


4.
CZuoBiaoDoc::CZuoBiaoDoc()
{
	// TODO: add one-time construction code here
	m_strLocal="";           //////初始化
}


5.
void CZuoBiaoView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default

	CZuoBiaoDoc* pDoc=GetDocument();
	ASSERT_VALID(pDoc);
	pDoc->m_strLocal.Format("%d,%d",point.x,point.y);
	m_point.x=point.x+20;
	m_point.y=point.y;
	Invalidate();
	
	CView::OnMouseMove(nFlags, point);
}


6.
void CZuoBiaoView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default

	CRect r;
	GetClientRect(&r);
	char * s;
	if(point.x>r.right/2)
	{
		if(point.y>r.bottom/2)
			s="你现在位于第四区";
	    else
		    s="你现在位于第一区";
	}
	else
	{
		if(point.y>r.bottom/2)
            s="你现在位于第三区";
		else
		    s="你现在位于第二区";
	}
	MessageBox(s,"位置提示",MB_OK|MB_ICONEXCLAMATION);
	CView::OnLButtonDown(nFlags, point);
}


7.
void CZuoBiaoView::OnDraw(CDC* pDC)
{
	CZuoBiaoDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here

	pDC->TextOut(m_point.x,m_point.y,pDoc->m_strLocal);
	CRect g;
	GetClientRect(&g);
	CPoint point;
	point.x=g.Width()/2;
	point.y=0;
	pDC->MoveTo(point);
	point.y=g.Height();
	pDC->LineTo(point);
	point.y=g.Height()/2;
	point.x=0;
	pDC->MoveTo(point);
	point.x=g.Width();
	pDC->LineTo(point);
}