深入c# GDI+简单绘图的具体操作步骤(二)

Graphics g = this.CreateGraphics();
Rectangle rect = new Rectangle(10,50,50);//定义矩形,参数为起点横纵坐标以及其长和宽
//单色填充
SolidBrush b1 = new SolidBrush(Color.Blue);//定义单色画刷         
g.FillRectangle(b1,rect);//填充这个矩形
//字符串
g.DrawString("字符串",new Font("宋体",10),b1,new PointF(90,10));
//用图片填充
TextureBrush b2 = new TextureBrush(Image.FromFile(@"e:picture1.jpg"));
rect.Location = new Point(10,70);//更改这个矩形的起点坐标
rect.Width = 200;//更改这个矩形的宽来
rect.Height = 200;//更改这个矩形的高
g.FillRectangle(b2,rect);
//用渐变色填充
rect.Location = new Point(10,290);
LinearGradientBrush b3 = new  LinearGradientBrush(rect,Color.Yellow,Color.Black,LinearGradientMode.Horizontal);
g.FillRectangle(b3,rect);

Graphics g = this.CreateGraphics();
//单色填充
//SolidBrush b1 = new SolidBrush(Color.Blue);//定义单色画刷         
Pen p = new Pen(Color.Blue,1);
//转变坐标轴角度
for (int i = 0; i < 90; i++)
{
    g.RotateTransform(i);//每旋转一度就画一条线
    g.DrawLine(p,100,0);
    g.ResetTransform();//恢复坐标轴坐标
}
//平移坐标轴
g.TranslateTransform(100,100);
g.DrawLine(p,0);
g.ResetTransform();
//先平移到指定坐标,然后进行度旋转
g.TranslateTransform(100,200);
for (int i = 0; i < 8; i++)
{
g.RotateTransform(45);
g.DrawLine(p,0);
}
g.Dispose();