4e207038_NB_XWIN___SELinux_Wiki__Parameters
[Function Name] SELinuxGetPropertyDataContext [Minor Opcode] 13 [Comments] Get the context of the property data. This could be the policy default or that set by the SELinuxSetPropertyCreateContext (9) function. [Parameters] 
WindowID + AtomID
N o n e
C o n t e x t + L e n
D e v i c e I D + C o n t e x t + L e n
D e v i c e I D
W i n d o w I D
W i n d o w I D + A t o m I D
NB XWIN - SELinux Wiki