Set the Variant types and the number of columns used by this.
This method must be called exactly once before using this. Note that some constructors will do this for you.
To create a model with three columns; a 32 bit integer, a string, and lastly an array of strings, you would do:
DeeModel *model;
model = dee_sequence_model_new ();
dee_model_set_schema (model, "i", "s", "as", NULL);| this |
The Model to set the column layout for |