Delphi自制的标尺控件 正方形的标尺，Package1.dpk是控件源码，时间关系，这里没有附加控件，截图没有看到控件效果，有意需要的下载源码测试下，应该不会有问题。-Delphi controls homemade ruler square ruler, Package1.dpk a control source, time, there are no additional controls, screenshots do not see the effect of the controls, intentionally need to download the source code under test, it should not be a problem.