代码说明： 在字处理软件中的标尺，类似word中的 A ruler bar control for word processors and similar applications. Similar in appearance to the MS Word ruler bar. Features: Dimensions in inches or centimeters Adjustable markers for margins and indent Up to 255 tabs with left, center and right styles Tabs can be set at design time and used at runtime Margins and tabs can be set at runtime by clicking and dragging Comprehensive help file included

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