求用VC做的“电子粉笔”也可叫鼠标笔的源码！

来源：百度知道 编辑：UC知道 时间：2024/06/04 00:46:23
最好说明是怎么做的，是不是工作窗口设为透明啊！？？？？最好给个设计过程来看下！谢谢
我想要一个工程的的源码，我初学，不太会啊！！！！邮箱 fan.jia.wan@163.com

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

void CDrawView::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
/*HDC hdc;
hdc=::GetDC(m_hWnd);
MoveToEx(hdc,m_ptOrigin.x,m_ptOrigin.y,NULL);
LineTo(hdc,point.x,point.y);
::ReleaseDC(m_hWnd,hdc);*/
/*CDC *pDC=GetDC();
pDC->MoveTo(m_ptOrigin);
pDC->LineTo(point);
ReleaseDC(pDC);*/

//CClientDC dc(this);
/*CClientDC dc(GetParent());
dc.MoveTo(m_ptOrigin);
dc.LineTo(point);*/

//CWindowDC dc(this);
//CWindowDC dc(GetParent());
/*CWindowDC dc(GetDesktopWindow());
dc.MoveTo(m_ptOrigin);
dc.LineTo(point);*/
/*CPen pen(PS_DOT,1,RGB(0,255,0));
CC