在选择Branch的状态下,点击中下方的Asserted Conditions(添加条件)中的第二个按钮(Create restrition )。在弹出的对话框中,选择Restrition中的allValuesFrom,然后点击下方的Insert class.
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如果上述代码中不包含第二行内容,并且使用带有简单操作Open page的第二个按钮以转到page2,那么computed字段将返回空值。
If instead the preceding code did not contain line 2 and if you used a second button with an Open page simple action to go to page2, the computed field would come back empty.
第二个按钮hello server与computed字段一起工作,图3突出显示了它在Properties附签中的值。
The second button, hello server, works in tandem with the computed field, whose value in the Properties TAB is highlighted in figure 3.
一开始,显示在两个按钮中的文字都相同,但随著调整按钮的大小,第二个按钮中的文字会扭曲。
Initially, the text appears the same in both buttons, but as the buttons are resized, the text in the second button becomes distorted.
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