Question

我正在使用WFA和C＃，我试图在包含图像的图片框上绘制一个椭圆。这是我的代码，但目前它的背后是PB。

private void Form1_Paint(object sender, PaintEventArgs e)
{
    PictureBox pb=new PictureBox();
    pb.Location=new Point(10,25);
    pb.BackgroundImage = Image.FromFile("fire2_clipped_rev_1.png");
    pb.Size = Image.FromFile("fire2_clipped_rev_1.png").Size;
    Truck.TruckF(pb.Location, pb.CreateGraphics());
    pb.Invalidate();
    Controls.Add(pb);
}

static Image truckf = Image.FromFile("fire2_clipped_rev_1.png");

public static void TruckF(Point location, Graphics e)
{
    Wheels(truckf.Size,location,e);  
}

private static void Wheels(Size simage,Point location,Graphics e)
{
    e.FillEllipse(Brushes.Black, location.X / 6F, location.Y / 1.43F, 20, 20);
}

Answer 1

您需要更改以处理表单上的Load事件。此外，PictureBox是一个控件，你需要绘制一个图像并将其交给PictureBox以使其工作。试试这个：

    private PictureBox pb;

    private void Truck_Load(object sender, EventArgs e)
    {
        pb = new PictureBox();
        pb.Location = new Point(10, 25);
        Image bg = Image.FromFile("fire2_clipped_rev_1.png");
        pb.BackgroundImage = bg;
        pb.Size = bg.Size;
        Bitmap img = new Bitmap(pb.Size.Width, pb.Size.Height);
        pb.Image = img;
        using (var g = Graphics.FromImage(img))
        {
            Truck.TruckF(pb.Location, g);
        }
        Controls.Add(pb);
    }

在图像WFA上绘图

1 个答案: