题
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?
解决方案
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;
}
}
其他提示
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);
}
}
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;
}
}
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