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X Error Classes

X errors are structured in the following class hierarchy:

Exception
 \_ error.XError
     \_ error.BadRequest
     \_ error.BadValue
     \_ error.BadAtom
     \_ error.BadMatch
     \_ error.BadAccess
     \_ error.BadAlloc
     \_ error.BadName
     \_ error.BadLength
     \_ error.BadImplementation
     \_ error.XResourceError
         \_ error.BadWindow
         \_ error.BadPixmap
         \_ error.BadCursor
         \_ error.BadFont
         \_ error.BadDrawable
         \_ error.BadColor
         \_ error.BadGC
         \_ error.BadIDChoice

All error objects has the following attributes:

code
The numeric error code
sequence_number
The sequence number of the failed request
resource_id
The bad resource id. For all the error.XResourceError this is a X resource object. For the other errors it is an integer, which for some errors might have no meaning
major_opcode
The major opcode for the failed request
minor_opcode
The minor opcode for the failed request. This will be zero for all base X11R6 request, but will be interesting for extension requests


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