Personal Communications DDE Data Items
Microsoft Windows DDE
uses a three-level naming scheme to identify data items: application,
topic, and item. Table 1 describes these levels.
| Level | Description | Example |
|---|---|---|
| Application | A Windows task or a particular task of an application. In this book, the application is Personal Communications. | IBM327032 IBM525032 |
| Topic | A specific part of an application. | SessionA |
| Item | A data object that can be passed in a data exchange. An item is an application-defined data item that conforms to one of the Windows clipboard formats or to a private, application-defined, clipboard format. For more information regarding Windows clipboard formats, refer to Microsoft Windows Software Development Kit Guide to Programming. | PS (presentation space) |
Personal Communications supports IBM327032 and IBM525032 applications as Win32 DDE server.
You can use the following topics:
- System
- SessionA, SessionB, …, SessionZ
- LUA_xxxx, LUB_xxxx, …, LUZ_xxxx
In DDE, atoms identify application names, topic names, and data items. Atoms represent a character string that is reduced to a unique integer value. The character string is added to an atom table, which can be referred to for the value of the string associated with an atom. Atoms are created with the GlobalAddAtom function call. Refer to Microsoft Windows Software Development Kit Guide to Programming for more information about how to create and use atoms.