Re: [問題] 繪圖與部分繪圖

[ideaup (ideaupsoho)]

Bitmap offScreenBmp;
Graphics Screen;
:         private void Form_LoadCall(){
:             offScreenBmp = new Bitmap(this.Width, this.Height);
:             Graphics Buffer;
:             Buffer = Graphics.FromImage(offScreenBmp);
:
              Bitmap pic = new Bitmap("pic1.jpg");
:             Buffer.Clear(this.BackColor);

:             Buffer.DrawImage(pic, pic_x, pic_y, pic.Width, pic.Height);
                }

         private void MyPaint(){
              if (Screen==null) PictureBox.CreateGraphics();
              else if (Has-e) Screen=e.Graphics;

:             Screen.DrawImage(offScreenBmp, 0, 0);

:            // Buffer.Dispose();   Screen.Dispose(); //no need
:         }


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