Question

嗨我正在尝试制作一个面板，当它悬停在图片上时会显示一些文字，我希望它跟随光标，所以我

System.Windows.Forms.Panel pan = new System.Windows.Forms.Panel();
    public Form1()
    {
        InitializeComponent();
        Product p = new Product();
        p.SetValues();
        this.pictureBox1.Image = (Image)Properties.Resources.ResourceManager.GetObject("pictureName");

    }

    private void pictureBox1_MouseEnter(object sender, EventArgs e)
    {
        pan.Height = 200;
        pan.Width = 100;
        pan.BackColor = Color.Blue;
        this.Controls.Add(pan);
        pan.BringToFront();
        //pan.Location = PointToClient(Cursor.Position);
    }

    private void pictureBox1_MouseLeave(object sender, EventArgs e)
    {
        Controls.Remove(pan);
    }

    private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
    {
        pan.Location = PointToClient(Cursor.Position);  
    }

我尝试添加this.doublebuffered = true; 但它只是使我看起来像我移动鼠标后面板的图像

当我将鼠标悬停在我的照片上时，它会显示面板，但它会像疯了一样闪烁这是正常的还是有解决方法或这是我的电脑问题

Answer 1

将this.DoubleDuffered = true;添加到Form只会影响Form，而不影响Panel。

因此请使用doubleBuffered Panel 子类：

class DrawPanel : Panel
{
    public DrawPanel ()
    {
      this.DoubleBuffered = true;
    }
}

然而，移动大件物品会造成损失。顺便说一句，PictureBox类已经是doubleBuffered。将Panel添加到PictureBox而不是表单似乎更合乎逻辑：pictureBox1.Controls.Add(pan);并向pictureBox1.Refresh();添加MouseMove。

更新：由于您没有在Panel上绘图并且还需要它与PictureBox重叠，因此上述想法并不真正适用;使用子类是没有必要的，虽然它在某些方面可能会派上用场。是的，Panel需要添加到Form的Controls集合中！

此代码在这里工作正常：

public Form1()
{
    InitializeComponent();

    // your other init code here

    Controls.Add(pan);  // add only once
    pan.BringToFront();
    pan.Hide();         // and hide or show
    this.DoubleDuffered = true  // !!
}

private void pictureBox1_MouseLeave(object sender, EventArgs e)
{
    pan.Hide();         // hide or show
}

private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
    pan.Location = pictureBox1.PointToClient(Cursor.Position);
    pictureBox1.Refresh();  // !!
    Refresh();              // !!
}

private void pictureBox1_MouseEnter(object sender, EventArgs e)
{
    pan.Height = 200;
    pan.Width = 100;
    pan.BackColor = Color.Blue;
    pan.Location = pictureBox1.PointToClient(Cursor.Position);
    pan.Show();        // and hide or show
}

您似乎错过了 doublebuffering Form和刷新的正确组合，Form和PictureBox

如何让我的面板停止闪烁

1 个答案: