WM_COMMAND WM_NOTIFY custom notification code

I wish开发者_开发问答 to define a new nofication id that will be used in WM_COMMAND messages of my subclassed control. But I failed to find any rules of creating user control-defined notification codes.

See technical note 20, 21 and 22 on that:

• TN020: ID Naming and Numbering Conventions

• TN021: Command and Message Routing

• TN022: Standard Commands Implementation

Short answer: pick a number in the range 0x8000 - 0xDFFF .