代码说明： AtPos控件是否工作？怎样鼠标下的控件，怎样建立编目的属性，建立一个连接的请求等 By RSD Software. Samples how to: 1. When ControlAtPos method is working and is not? 2. How to see what (win)control is under mouse cursor? (Demo + TControlAtCursorPos component) 3. Macro Substitution in Delphi. Create indexed property. (Demo + TMacroSubstitution object) 4. Make a joined (sorted) Query LIVING (Demo) 5. Write component and property editors (Demo + 2 components) 6. Reindex all indexes in the alias in Delphi 1.0 (Demo)

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