滚动查看器和画布的问题
我有一个自定义的 canvas 控件，它位于 scrollviewer 内 - 我已经实现了 canvas 上的项目的拖放和移动，并覆盖了 >MeasureOverride 这样，当我在画布上移动项目时，其大小会反映更改，因此，如果我将项目移动到画布的可见部分之外，它将调整大小以适应移动的项目，并且滚动条将适当显示。
但是，如果我随后使用滚动条将项目放入视图中，然后开始再次将项目移回视图中，滚动条就会变得有点失控。
我担心这对问题的解释相当糟糕，但我不知道还能怎么说，但希望它能包含足够的信息，让有人为我指明正确的方向。
I have a custom canvas control which sits inside a scrollviewer - I have implemented drag, drop and move for items on the canvas and overridden MeasureOverride so that when I move an item around on the canvas its size reflects the changes so if I move the item beyond the visible portion of the canvas it will resize to accommodate the moved item and scrollbars will show appropriately.
However if I then bring the item into view by using the scrollbars then start to move the item back out again the scrollbars go a bit haywire.
It's a rather poor explanation of the problem I afraid but I am not sure how else to put it but hopefully it will contain enough info for somebody to point me in the right direction.
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是的，你是对的，需要对问题进行更多解释。尽管我也遇到了
Canvas和scroll-viewer的很多问题，但请查看这个问题以了解我遇到的问题以及我如何解决该问题 -< a href="https://stackoverflow.com/questions/3061400/scrollbars-are-not-visible-after-change-positions-of-controls-inside-a-canvas">更改控件位置后滚动条不可见在画布内
Yes you are right, more explanation of problem is required. Although I was also in a situation where I faced a lot of issues with
Canvasandscroll-viewer, look at this question for problems I faced and how I solved that -ScrollBars are not visible after changing positions of controls inside a Canvas