I've found a solution for my situation:

for obj in bpy.data.objects:
    if obj.visible_get() and bpy.context.space_data.show_object_select_mesh == False:
        # Do something...

I forgot, I can use the Info window to see the most command codes, that were recently used by the user.

I've found a solution for my situation:

for obj in bpy.data.objects:
    if obj.visible_get() and bpy.context.space_data.show_object_select_mesh == False:
        # Do something...

I forgot, I can use the Info window in Blender to see the most command codes, that were recently used by the user.