This method is not supported by the editorgadget itself. The idea is that you should subclass the gadget and implement your own error handler. The handler should just bring up a requester or write the error in a status line.
Error_ClipboardIsEmpty: The clipboard doesn't hold any data.
Error_ClipboardIsNotFTXT: The clipboard doesn't hold any text.
Error_MacroBufferIsFull: Not yet used.
Error_MemoryAllocationFailed: Not yet used.
Error_NoAreaMarked: The user has tried to copy or cut, but
Error_NoMacroDefined: Not yet used.
Error_NothingToRedo: There is nothing more to redo.
Error_NothingToUndo: There is nothing more to undo.
Error_NotEnoughUndoMem: The user has erased something that is
too big to be saved. This results in a
lost undobuffer.
Error_StringNotFound: Not yet used.