NSLevelIndicator - 可可
我如何才能使用 NSLevelIndicator？我对此很陌生，所以我不太了解如何在我的应用程序中使用进度条。
How would I be able to use a NSLevelIndicator? I am very new to this so, I don't know much on how to use a progress bar for my application.
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您不会将 NSLevelIndicator 用于进度条。请查看
NSProgressIndicator。它同时具有进度条和“旋转器”控件。例如，NSLevelIndicator用于显示磁盘已满，或者无线鼠标的电池剩余电量。You wouldn't use
NSLevelIndicatorfor a progress bar. Check outNSProgressIndicatorinstead. It does both progress bars and "spinner" controls.NSLevelIndicatoris used, for example, to show how full a disk is, or how much battery life is left in your wireless mouse.你没有解释你的经验水平。假设您已经在 Interface Builder 中创建了一个窗口，将 NSLevelIndicator 拖到该窗口上，在应用程序中为其创建一个出口，并根据需要设置其值。如果您不明白其中任何内容，请按照 Apple 的标准初学者教程并从那里开始。
You don't explain your level of experience. Assuming you have a window already created in Interface Builder, drag an NSLevelIndicator onto the window, create an outlet to it in your application, and set its value as needed. If you don't understand any of that, follow Apple's standard beginners' tutorial and start from there.
http://developer.apple.com/mac /library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSLevelIndicator_Class/
http://developer.apple.com/mac /library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSProgressIndicator_Class/
http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSLevelIndicator_Class/
http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSProgressIndicator_Class/