I used the awt to make a menu and populated that menu with several items. How do I "disable" the menu items?
menuItemInstance.setEnabled(false);
不能抵制对其他答案的微调:改变现状 项目本身是可以做到的,因此技术上是正确的。 然而,这在大部分时间都不是一个好的想法。
管理扶持状态,除了最简单的环境外,还可能变得非常复杂。 通常需要一个专门的国家模式。 这一国家模式的目标项目应当像数据一样(而不是类似观点)。 理想(因为其设计是为了:)指标项目(或其他纽特州)为<行动编码>。
短版:用<条码>行动填充男子,然后管理行动授权而不是行动组成部分。
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