时间控制动画gdi

dc.SelectObject(&pen); switch(1) { case1: { dc.MoveTo(m_start.x,m_start.y); dc.LineTo(m_end.x,m_end.y); m_end.x=m_end.x+c; m_end.y=m_end.y+c; if(m_end.x>=100&&m_end.y>=250)KillTimer(1); dc.LineTo(m_end.x,m_end.y); break; } case2: { intd=1; dc