Question

我正在尝试使用timer.tick在面板上移动图像，但由于某种原因它不起作用... 在属性窗口中启用了计时器，这是我的代码：

public partial class Form1 : Form
{
    private Image img;
    private Point pos;

    public Form1()
    {
        InitializeComponent();

        img = Image.FromFile("C:/object.png");
        pos = new Point(100, 100);
    }

    private void panel1_Paint(object sender, PaintEventArgs e)
    {
        e.Graphics.DrawImage(img, pos);
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        pos.X += 10;
        pos.Y += 10;

        Invalidate();
    }
}

我看不出这里有什么问题？：）

我也试过这个：

public partial class Form1 : Form
{
    private Image img;
    private Point pos;

    public Form1()
    {
        InitializeComponent();

        img = Image.FromFile("C:/object.png");
        pos = new Point(100, 100);

        Timer myTimer = new Timer();
        myTimer.Enabled = true; // don't know if this goes here
        myTimer.Tick += new EventHandler(MoveImg);
        myTimer.Interval = 100;
        myTimer.Start();
    }

    private void MoveImg(Object myObject, EventArgs myEventArgs)
    {
        pos.X += 10;
        pos.Y += 10;

        Invalidate();
    }

    private void panel1_Paint(object sender, PaintEventArgs e)
    {
        e.Graphics.DrawImage(img, pos);
    }
}

Answer 1

您需要使用Timer.Start()

启动计时器

public Form1()
{
    InitializeComponent();

    img = Image.FromFile("C:/object.png");
    pos = new Point(100, 100);
    timer1.Start();
}

正如 Hans Passant 所说 - 你必须使正确的对象无效。

private void MoveImg(Object myObject, EventArgs myEventArgs)
{
    pos.X += 10;
    pos.Y += 10;

    panel1.Invalidate();
}

Timer.Tick不起作用

1 个答案: