检查是否在Windows形成滚动条滚动一路下跌？ [英] Checking if a Windows forms scroll bar is scrolled all the way down?

问题描述

我有一个作为记录了丰富的文本框。当一个新的消息被追加，这是很好的日志自动滚动自行关闭。唯一的问题是，当用户希望从之前查看的东西在日志中;如果有新的消息被追加，包装盒自动滚动一路下来，prevents无法看到任何东西的用户。 我想能够检查丰富的文本框滚动一路下来，如果不是不向下滚动。

I have a rich text box which serves as a log. The log automatically scrolls itself down when a new message is appended, which is good. The only problem is when the user wants to view something in the log from before; if a new message is appended, the box automatically scrolls all the way down and prevents the user from seeing anything. I would like to be able to check if the rich text box is scrolled all the way down, and if it isn't not scroll down.

目前我可以在虚拟空间文本（SendMessage函数与EM_GETSCROLLPOS）滚动位置。我还可以得到与GetScrollBarInfo PInvoke的滚动条信息。但我怎么找出虚拟空间文本的底部？

Currently I can get the scroll position in the virtual text space (SendMessage with EM_GETSCROLLPOS). I can also get scroll bar info with GetScrollBarInfo pinvoke. But how do I figure out what the bottom of the virtual text space is?

谢谢！

推荐答案

使用 vScrollBar 控制你的的RichTextBox 而处理其Scroll事件

Use a vScrollBar control for your RichTextBox and handle its Scroll event

    private void vScrollBar1_Scroll(object sender, ScrollEventArgs e)
    {
        if (e.Type == ScrollEventType.Last)
        {
            //scrollbar is all the way down
        }
        else
        {
            //user has scrolled up
        }
    }

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