VC++深入详解-第四章学习心得

这一章节主要讲解了 简单的绘图

主要是通过一些小的例子让我们学会了VC++的一些基本操作

void CDrawView::OnLButtonDown(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default
	m_ptOrigin = point;
//	MessageBox("hello");
	CView::OnLButtonDown(nFlags, point);
}

void CDrawView::OnLButtonUp(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default
	/*
	//获得窗口的设备描述表
	HDC hdc;
	hdc = ::GetDC(m_hWnd);
	//移动到线条起点
	MoveToEx(hdc,m_ptOrigin.x,m_ptOrigin.y,NULL);
	//画线
	LineTo(hdc,point.x,point.y);
	//释放
	::ReleaseDC(m_hWnd,hdc);
	CView::OnLButtonUp(nFlags, point);
	*/

	/*
	//获得窗口的设备描述表对象的指针
           CDC* pDC = GetDC();
	pDC->MoveTo(m_ptOrigin);
	pDC->LineTo(point);
	ReleaseDC(pDC);
	CView::OnLButtonUp(nFlags, point);
	*/

	/*
	CClientDC dc(this);
	dc.MoveTo(m_ptOrigin);
	dc.LineTo(point);
	CView::OnLButtonUp(nFlags, point);
	*/

	/*
	//CWindowDC wDC(this);
	//CWindowDC wDC(GetParent());
	CWindowDC wDC(GetDesktopWindow());
	wDC.MoveTo(m_ptOrigin);
	wDC.LineTo(point);
	CView::OnLButtonUp(nFlags, point);
	*/

	/*
	CPen pen(PS_SOLID,1,RGB(255,0,0));
	CClientDC dc(this);
	CPen* pOldPen = dc.SelectObject(&pen);
	dc.MoveTo(m_ptOrigin);
	dc.LineTo(point);
	dc.SelectObject(pOldPen);
	CView::OnLButtonUp(nFlags, point);
	*/

	/*
	//定义画刷
	CBrush brush(RGB(255,0,0));
	//获得窗口的设备描述表对象
	CClientDC dc(this);
	//画矩形
	dc.FillRect(CRect(m_ptOrigin,point),&brush);

	CView::OnLButtonUp(nFlags, point);
	*/

	//创建位图
	CBitmap bitmap;
	//加载位图资源
	bitmap.LoadBitmap(IDB_BITMAP1);
	//画刷
	CBrush brush(&bitmap);
	CClientDC dc(this);
	dc.FillRect(CRect(m_ptOrigin,point),&brush);

	CView::OnLButtonUp(nFlags, point);

}

后面还有几个小例子就没有一一去写了，基本类似，因为个人觉得实用性不大，需要看相关绘图方面的资料时再回头来看