如何通过点击特定的按钮激活keydown事件？

Question

我正在开发2D游戏（pacman），通过c＃改进自己在VB 2013中，我想通过点击特定按钮来激活我的按键事件（这是游戏结束时显示的重启按钮）。谢谢你的帮帮我。

//these are my keydown codes 
private void Form1_KeyDown(object sender, KeyEventArgs e) 
    { 


     int r = pictureBox5.Location.X; 
     int t = pictureBox5.Location.Y; 





     if (pictureBox5.Top >= 33) 
     { 
      if (e.KeyCode == Keys.Up) 
      { 
       t = t - 15; 


      } 
     } 


     if (pictureBox5.Bottom <= 490) 
     { 
      if (e.KeyCode == Keys.Down) 
      { 
       t = t + 15; 
      } 
     } 


     if (pictureBox5.Right <= 520) 
     { 
      if (e.KeyCode == Keys.Right) 
      { 
       r = r + 15; 
      } 
     } 

     if (pictureBox5.Left >= 30) 
     { 

      if (e.KeyCode == Keys.Left) 
      { 
       r = r - 15; 
      } 

     } 


     if (e.KeyCode == Keys.Up && e.KeyCode == Keys.Right) 
     { 
      t = t - 15; 
      r = r + 15; 
     } 





     pictureBox5.Location = new Point(r, t); 
    } 

//and that's the button I wanted to interlace with keydown event 
private void button1_Click(object sender, EventArgs e) 
    { 
    } 

Answer 1

有点重构可以帮助这里。假设如果你点击按钮，键码使用的是Keys.Down。在这种情况下，你可以移动Form_KeyDown里面所有的代码到一个名为HandleKey

不同的方法

private void HandleKey(Keys code)  
{ 
    int r = pictureBox5.Location.X; 
    int t = pictureBox5.Location.Y; 
    if (pictureBox5.Top >= 33) 
    { 
     if (code == Keys.Up) 
      t = t - 15; 
    } 
    if (pictureBox5.Bottom <= 490) 
    { 
     if (code == Keys.Down) 
      t = t + 15; 
    } 
    if (pictureBox5.Right <= 520) 
    { 
     if (code == Keys.Right) 
      r = r + 15; 
    } 

    if (pictureBox5.Left >= 30) 
    { 
     if (code == Keys.Left) 
      r = r - 15; 
    } 

    // This is simply impossible 
    if (code == Keys.Up && code == Keys.Right) 
    { 
     t = t - 15; 
     r = r + 15; 
    } 
    pictureBox5.Location = new Point(r, t); 
} 

现在，你甚至可以从Form_KeyDown事件这种方法

private void Form_KeyDown(object sender, KeyEventArgs e) 
{ 
    // Pass whatever the user presses... 
    HandleKey(e.KeyCode); 
} 

，并从点击链接

private void button1_Click(object sender, EventArgs e) 
{ 
    // Pass your defined key for the button click 
    HandleKey(Keys.Down); 
}