Re: [問題] 繪圖與部分繪圖

[ideaup (ideaupsoho)]

我把某個program 的程式, 列出

 Image mapImage;
  Bitmap map;
Graphics graph,xgraph;

=========Form--Load---Event  need Add
            xgraph=pictureBox1.CreateGraphics();
            ww=pictureBox1.Width; hh=pictureBox1.Height;
             src=dest=new Rectangle(0, 0, ww, hh);

            map=new Bitmap(ww, hh);
            mapImage=Image.FromHbitmap(map.GetHbitmap());
            graph=Graphics.FromImage(mapImage);
           }

    private void pictureBox1_Paint(object sender, PaintEventArgs e) {
            if (mapImage==null) return;
            try {
                e.Graphics.DrawImage(mapImage, dest, src, GraphicsUnit.Pixel);
                }
            catch(Exception ) { throw; }
        }

        private void pictureBox1_Resize(object sender, EventArgs e) {
            if (mapImage==null) return;
            int wd=pictureBox1.Width, ht=pictureBox1.Height;

            SetSize(wd,ht);
            dest=new Rectangle(0, 0, wd, ht);
            if (xgraph==null) game.xgraph=pictureBox1.CreateGraphics();
            xgraph.DrawImage(mapImage, dest, src, GraphicsUnit.Pixel);
        }

      Timer_Click() {
        //在graph上 draw,  fill 各樣rectangle, ellipse,

         xgraph.DrawImage(mapImage, dest, src, GraphicsUnit.Pixel);
        }


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