The original specification for rich edit controls is rich edit version 1.0. The current specification is rich edit version 2.0. Before creating a rich edit control, you should call the LoadLibrary function to verify which version of rich edit is installed. The following table shows which DLL corresponds with which version of rich edit.
| Rich Edit Version | DLL |
|---|---|
| 1.0 | RICHED32.DLL |
| 2.0 | RICHED20.DLL |
Windows NT: Windows NT version 4.0 and later ship both rich edit libraries.
Windows 95: Windows 95 ships only RICHED32.DLL. However, RICHED20.DLL is compatible with Windows 95 and may be present if an application that uses rich edit 2.0 has been installed on the system.