移动图片框面板

Question

我在C＃中，WindowsForms一个项目，我创建了一个包含一个panel比他的父母更大的一个pictureBox。

我转身panel.AutoScroll到true和我想要做的就是在pictureBox拖动这个panel，而不是追赶滚动和移动它。

即。当我抢的图像和移动光标到左，下，我想获得相同的行为，我将与panel的滚动做到这一点。

怎么办呢？

Answer 1

好的，我知道了。 ;-)如果任何人具有同样的问题，这里是溶液：

    protected Point clickPosition;
    protected Point scrollPosition; 

    private void pictureBox_MouseDown(object sender, MouseEventArgs e)
    {
        this.clickPosition.X = e.X;
        this.clickPosition.Y = e.Y;
    }

    private void pictureBox_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            scrollPosition.X = scrollPosition.X + clickPosition.X - e.X;
            scrollPosition.Y = scrollPosition.Y + clickPosition.Y - e.Y;
            this.panel.AutoScrollPosition = scrollPosition;
        }
    }  

Answer 2

的HSZ溶液的更小的变体：）

    protected Point clickPosition;
    protected Point scrollPosition;

    private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
    {
        this.clickPosition = e.Location;            
    }

    private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            this.SuspendLayout();
            this.scrollPosition += (Size)clickPosition - (Size)e.Location;
            this.panel1.AutoScrollPosition = scrollPosition;                    
            this.ResumeLayout(false);
        }
    }

Answer 3

这HSZ”的改进的解决方案，具有滚动的限制，但是我只允许垂直滚动

protected Point clickPosition;
protected Point scrollPosition;

private void picBoxScan_MouseDown(object sender, MouseEventArgs e)
{
    this.clickPosition.X = e.X;
    this.clickPosition.Y = e.Y;
}

private void picBoxScan_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        scrollPosition.X = panelViewFile.AutoScrollPosition.X;
        scrollPosition.Y = scrollPosition.Y + (clickPosition.Y - e.Y);
        scrollPosition.Y = Math.Min(scrollPosition.Y,panelViewFile.VerticalScroll.Maximum);
        scrollPosition.Y = Math.Max(scrollPosition.Y,panelViewFile.VerticalScroll.Minimum);
        panelViewFile.AutoScrollPosition = scrollPosition;
    }
}