当用户尝试从具有子项的NSOutlineView中删除行时，显示NSAlert
[英]Making an NSAlert be displayed when the User attempts to delete a row from an NSOutlineView when it has children
问题描述
How would I do this? 
我该怎么做？ The Outline View is being used with Core Data. 大纲视图正与核心数据一起使用。
1 个解决方案
解决方案1
2 已采纳 2009-09-06 13:21:40
This hasn't really got anything to do with Core Data. 这实际上与Core Data没有任何关系。 Just check [object.children count] upon deletion. 只需在删除时检查[object.children count]。 When it is not 0, show a NSAlert. 如果不为0，则显示NSAlert。
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