Hi,
I want to use my horizontal lcd as vertical in my application. Currently I am using it horizontal (32bit dept) and all works fine. I change GUIDRV_LIN_32 to GUIDRV_LIN_OSXY_32 to use it vertical. Then when I compile the project, the -undefined reference to 'GUIDRV_Lin_OSXY_32_API '- error occurs.But when I review the library all GUI_DEVICE_APIs refers to same header. How can I define the reference of 'GUIDRV_Lin_OSXY_32_API' ?

Thanks in advance.

The problem solved through answer of "Alessandro D"