控制移动PictureBox

所以，我有点卡在我移动的PICTURE盒子上; 目前我的表格2加载图片框开始移动，这正是我想要的，但它不在我的控制中，这就是我想要做的，但我失败了…..我只想要是动态图片盒的方向由键控制……谢谢。

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form2 : Form { public Form2() { InitializeComponent(); } private void Form2_Load(object sender, EventArgs e) { timer1.Start(); } private void Form2_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Right) { pictureBox1.Location = new Point(pictureBox1.Location.X + 5, pictureBox1.Location.Y); } if (e.KeyCode == Keys.Up) { pictureBox1.Location = new Point(pictureBox1.Location.X, pictureBox1.Location.Y - 5); } if (e.KeyCode == Keys.Left) { pictureBox1.Location = new Point(pictureBox1.Location.X - 5, pictureBox1.Location.Y); } if (e.KeyCode == Keys.Down) { pictureBox1.Location = new Point(pictureBox1.Location.X, pictureBox1.Location.Y + 5); } } private void timer1_Tick(object sender, EventArgs e) { pictureBox1.Location = new Point(pictureBox1.Location.X + 25, pictureBox1.Location.Y); } private void pictureBox1_Click(object sender, EventArgs e) { } } } 

Answer 1

您需要一个变量来指示框移动的方向：

  private enum Direction { None, Left, Right, Up, Down }; private Direction currentDir = Direction.None; 

计时器的Tick事件需要检查此变量以了解移动框的方向：

  private void timer1_Tick(object sender, EventArgs e) { int vel = 5; switch (currentDir) { case Direction.Left: pictureBox1.Left -= Math.Min(vel, pictureBox1.Left); break; case Direction.Right: pictureBox1.Left += Math.Min(vel, this.ClientSize.Width - pictureBox1.Right); break; case Direction.Up: pictureBox1.Top -= Math.Min(vel, pictureBox1.Top); break; case Direction.Down: pictureBox1.Top += Math.Min(vel, this.ClientSize.Height - pictureBox1.Bottom); break; } } 

您的KeyDown事件处理程序应该只设置变量：

  private void Form1_KeyDown(object sender, KeyEventArgs e) { switch (e.KeyData) { case Keys.Left: currentDir = Direction.Left; break; case Keys.Right: currentDir = Direction.Right; break; case Keys.Up: currentDir = Direction.Up; break; case Keys.Down: currentDir = Direction.Down; break; } } 

您还需要KeyUp事件，它应该再次停止移动框：

  private void Form1_KeyUp(object sender, KeyEventArgs e) { switch (e.KeyData) { case Keys.Left: if (currentDir == Direction.Left) currentDir = Direction.None; break; case Keys.Right: if (currentDir == Direction.Right) currentDir = Direction.None; break; case Keys.Up: if (currentDir == Direction.Up) currentDir = Direction.None; break; case Keys.Down: if (currentDir == Direction.Down) currentDir = Direction.None; break; } } 

Answer 2

在UI线程上引发了计时器事件，因此按键事件的播放速度不够快。

在后台线程上运行计时器，它应该工作。 请记住，计时器将进行跨线程调用，因此您需要使用Control.InvokeRequired