Question

我尝试在c＃中做一个程序，你试图装饰一棵圣诞树，我想用鼠标选择地球仪并放在圣诞树上。我可以做到这一点，但只是为了一个图片框，我写了第二个图片框的代码，我运行程序，全球正在移动。这是我的代码。怎么解决这个问题？
附： picturebox1和2是地球仪，pb_brad是圣诞树。

   public partial class Form1 : Form
{
    Point location = Point.Empty;
    public Form1()
    {
        InitializeComponent();
        pictureBox1.Parent = pb_brad;
        pictureBox1.BackColor = Color.Transparent;
        pictureBox2.Parent = pb_brad;
        pictureBox2.BackColor = Color.Transparent;

    }

    private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            location = new Point(e.X, e.Y);
        }
    }

    private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
    {
        if (location != Point.Empty)
        {
            Point newlocation = this.pictureBox1.Location;
            newlocation.X += e.X - location.X;
            newlocation.Y += e.Y - location.Y;
            this.pictureBox1.Location = newlocation;
        }
    }

    private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
    {
        location = Point.Empty;
    }

    private void pictureBox2_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            location = new Point(e.X, e.Y);
        }
    }

    private void pictureBox2_MouseMove(object sender, MouseEventArgs e)
    {
        if (location != Point.Empty)
        {
            Point newlocation = this.pictureBox1.Location;
            newlocation.X += e.X - location.X;
            newlocation.Y += e.Y - location.Y;
            this.pictureBox2.Location = newlocation;
        }
    }

    private void pictureBox2_MouseUp(object sender, MouseEventArgs e)
    {
        location = Point.Empty;
    }

}

Answer 1

我看到你在pictureBox2的MouseMove事件处理程序中使用了pictureBox1。

顺便说一下，我看到两个PictureBox的处理程序是相同的。为什么不对所有PictureBox使用相同的处理程序并通过sender参数获取当前的PictureBox？

C＃如何用鼠标移动图片框

1 个答案: