c# 鍵盤控制控制項的移動

來源:互聯網
上載者:User

如何讓鍵盤控制picturebox。

1.選中Form,查看屬性:keyPreview設定成true;
2.選中Form,查看事件(屬性旁邊的閃電符號):在keyDown事件處雙擊,進入代碼編輯

 private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Left: { pictureBox1.Left -= 2; } break;
                case Keys.Right: { pictureBox1.Left += 2; } break;
                case Keys.Up: { pictureBox1.Top -= 2; } break;
                case Keys.Down: { pictureBox1.Top += 2; } break;
           
            }
        }
 private void Form1_Paint(object sender, PaintEventArgs e)
        {
            int a = 10, b = 10,c,d, i, j;
            c = pictureBox1.Location.X;
            d = pictureBox1.Location.Y;
            Graphics g = e.Graphics; //建立畫板,這裡的畫板是由Form提供的.
      Pen p = new Pen(Color.Blue, 2);//定義了一個藍色,寬度為的畫筆
      g.DrawLine(p, a, b,c ,d);//在畫板上畫直線,起始座標為(10,10),終點座標為picturebox的左上方座標

      }

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