此外，你可以定义当用户双击时默认选中的对象。
In addition, you can define the object that is selected by default when the user double taps.
当用户双击其中的错误项时，编辑器就会打开有问题的文件。
When the user double-clicks an entry, the editor opens with the offending file.
当用户双击selectedStates 控件时，将使用showDialog函数显示弹出对话框。
When the user double clicks the selectedStates control, the pop-up dialog is displayed using the showDialog function.
如果已通过使用此属性增加了分隔符的宽度，则当用户双击分隔符与相邻列之间的边界时，会发生此事件。
If the width of a divider has been increased through the use of this property, this event occurs when the user double-clicks the boundary between the divider and the adjacent column.
当用户双击文档时，需要在相关联的应用程序中打开文档（比如用 AdobeReader 打开PDF文件）。
When the user double-clicks the document, you need to launch the document in its associated application (such as the Adobe Reader for a PDF file).
当用户双击文档时，需要在相关联的应用程序中打开文档（比如用 AdobeReader 打开PDF文件）。
When the user double-clicks the document, you need to launch the document in its associated application (such as the Adobe Reader for a PDF file).
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