无需 AutoScroll 即可获得实时滚动 [英] Get real-time scrolling without AutoScroll
问题描述
询问后:当包含的控件获得焦点时阻止自动滚动我找到了一种没有 AutoScroll 的滚动条的方法(使用可以访问 VScroll
属性的派生类).但是 - 它不是实时的.即只有当用户完成滚动时,控件才会真正滚动.(与带有 AutoScroll = true
的面板相反.)那么我如何让它实时滚动?
After asking this: Prevent AutoScroll when contained Control gets focus I've found a way to have a scrollbar without the AutoScroll (using a derived class which can access the VScroll
property). However - it's not in real-time. i.e. Only when the user is done scrolling does the Control actually get scrolled. (as opposed to a Panel with AutoScroll = true
.) So how do I get it to scroll in real-time?
我的代码:
using System.Drawing;
using System.Windows.Forms;
namespace test
{
public partial class Form1 : Form
{
MyPanel panel = new MyPanel
{
//AutoScroll = true,
Size = new Size(200, 200),
Location = new Point(0, 30),
BackColor = Color.Green
};
Button b1 = new Button
{
Location = new Point(100, 100),
Size = new Size(50, 150),
BackColor = Color.Black
};
Button b2 = new Button();
public Form1()
{
InitializeComponent();
panel.Controls.Add(b1);
Controls.Add(panel);
Controls.Add(b2);
Shown += new System.EventHandler(Form1_Shown);
}
void Form1_Shown(object sender, System.EventArgs e)
{
panel.VerticalScroll.Visible = true;
panel.SetV();
}
}
class MyPanel : Panel
{
public void SetV() { VScroll = true; }
}
}
推荐答案
如评论所示:
您需要覆盖面板的 OnScroll() 方法并调用SetDisplayRectLocation(0, -se.NewValue).
You'll need to override the panel's OnScroll() method and call SetDisplayRectLocation(0, -se.NewValue).
这就是这个问题的答案.
That's the answer to this question.
但是,我发现我不能同时拥有两个滚动条.或者至少 - 我还没有找到办法做到这一点.
However, I've found that I can't have both scrollbars simultaneously. Or at least - I haven't found a way to do it.
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