[EM_SETPAGEROTATE is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions.]
Sets the text layout for a rich edit control.
Text layout value. This can be one of the following values.
Not used; must be zero.
Return value is the new text layout value.
This message sets the text layout for the entire document. However, embedded contents are not rotated and must be rotated separately by the application.
Minimum supported client
|Windows XP with SP1 [desktop apps only]|
Minimum supported server
|Windows Server 2003 [desktop apps only]|
Build date: 11/16/2013