[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.
Text flows from left to right and from top to bottom.
Text flows from bottom to top and from left to right.
Text flows from right to left and from bottom to top.
Text flows from top to bottom and from right to left.
Windows 8: Text flows top to bottom and left to right (Mongolian text layout).
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]