I'd like to rotate the screen under program control.
Similar to the the Windows Control-Alt and Arrow Key.
Is there an API call to do this?
This would be for a program placed in the Startup Folder that rotates the screen and then does other things.
It is for viewing music wit a monitor mounted sideways to read more like a sheet of paper - portrait orientation.
Yes you can use the functions ChangeDisplaySettings().
Here (https://msdn.microsoft.com/en-us/library/ms812499.aspx) you'll find more info and a sample.
Thank you