在C#中使用画笔

public class Rectangle : Shape

{

protected Point m_Start;

protected Point m_End;

public Rectangle(Point start, Point end, Color fgColor)

{

m_Start = start;

m_End = end;

m_Color = fgColor;

}

public override void Draw(Form canvas)

{

if (canvas == null)

{

return;

}

InitializeGraphics(canvas);

Point startPoint = canvas.PointToScreen(m_Start);

Point endPoint = canvas.PointToScreen(m_End);

MainForm mainForm = (MainForm)canvas;

Color bgColor = GetBackgroundColor(m_Color);

Size rectSize = new Size(m_End.X - m_Start.X, m_End.Y - m_Start.Y);

System.Drawing.Rectangle rectToDraw = new System.Drawing.Rectangle(startPoint, rectSize);

ControlPaint.DrawReversibleFrame(rectToDraw, bgColor, FrameStyle.Thick);

}

}