<SWT树>将垂直滚动条移动到树的左侧而不更改方向 [英] SWT tree &gt; move the vertical scrollbar to the left of the tree without changing the orientation

问题描述

如何将垂直滚动条放在树的左侧？

How to put the vertical scroll bar on the left hand side of the tree?

推荐答案

如果你只在Windows上，你可以这样做：

If you are on Windows only, you could do this:

int exStyle = OS.GetWindowLong(tree.handle, OS.GWL_EXSTYLE);
exStyle |= OS.WS_EX_LEFTSCROLLBAR;
OS.SetWindowLong(tree.handle, OS.GWL_EXSTYLE, exStyle);

否则你可能想看看 Snippet296 ，显示如何使用ScrolledComposite处理树的滚动。通过将样式SWT.RIGHT_TO_LEFT添加到ScrolledComposite，并将SWT.LEFT_TO_RIGHT添加到此代码段中的树，我左侧有一个滚动条。但是我没能解决当时出现的树的定位问题。

Otherwise you might want to look into Snippet296, which shows how to handle scrolling for a Tree using a ScrolledComposite. By adding the style SWT.RIGHT_TO_LEFT to ScrolledComposite, and SWT.LEFT_TO_RIGHT to the Tree in this snippet, I had a scroll bar on the left. But I failed to fix the positioning issue of the Tree, which comes up then.

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