Hello,

with regard to ready-made API in emWin you can only rotate content of memory devices. These are memory areas where you can draw or copy any graphics including images.

See chapter "Memory Devices" in the manual and description of the GUI_MEMDEV_Create(), GUI_MEMDEV_Rotate() in the memory device API list.

There is also an example from SEGGER emWin simulation pack in the file MEMDEV_ZoomAndRotate.c

Alex.