[MSDN Library June 1998] EM_SETREADONLY (44.4014319014319%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Controls > Edit Controls > Edit Control Reference > Edit Control Messages

[MSDN Library September 1992] EM_SETREADONLY (39.0136179609864%)

Product Documentation > Windows 3.1 SDK > Programmer's Reference Volume 3: Messages, Structures, and Macros > Chapter 2 Messages > DM_GETDEFID