在面板中移动pictureBox

时间:2009-12-22 00:51:09

标签: c# winforms panel picturebox

我在C#,WindowsForms中有一个项目,我创建了一个panel,其中包含的pictureBox比他父母大得多。

我将panel.AutoScroll转为true我想要做的就是在pictureBox中拖动panel而不是抓住滚动并移动它。

即。当我抓住一个图像并将光标向左和向下移动时,我希望得到与panel的卷轴相同的行为。

怎么做?

3 个答案:

答案 0 :(得分:5)

好的,我明白了。 ;-)如果其他人有同样的问题,这里有解决方案:

    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;
        }
    }  

答案 1 :(得分:0)

hsz解决方案的较小变体:)

    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);
        }
    }

答案 2 :(得分:0)

来自hsz'的改进解决方案,有滚动限制,但我只允许垂直滚动

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;
    }
}