展开/折叠树后的火灾事件 [英] Fire event after expand/collapse tree

问题描述

我需要在折叠和展开后触发事件调整大小.当我尝试使用 SWT.Collapse 和 SWT.Expand 做到这一点时，树上没有任何变化，因为它在发生之前就火了.有什么办法吗?

I need to fire event resize after collapse and expand. When I try to do that using SWT.Collapse and SWT.Expand, there is no changes on tree because its fire before its happen. Is there any way to this?

推荐答案

尝试调用 Display.asyncExec 来安排 SWT.Collapse/Expand 中的 Runnable 监听器.Runnable 在当前 Tree 操作完成之前不会运行.

Try calling Display.asyncExec to schedule a Runnable in the SWT.Collapse/Expand listener. The Runnable will not run until the current Tree operation is complete.

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