Define Missing MATLABType Property

R2026b

When defining arguments in a MATLAB^® interface, MATLAB automatically converts C++ types to MATLAB types, as described in C++ to MATLAB Data Type Mapping. You can override or specify these mappings when programmatically defining argument behavior.

If the C++ type for the argument is a string, then use these options when specifying values for the MATLABType and Size properties in clibgen.api.InputArgumentDefinition or clibgen.api.OutputArgumentDefinition objects when defining arguments.

This table shows typical mappings and options for string pointer types. The values are applied when defining argument types in the interface definition.

C++ Type	MATLABType	Direction	Options for Size
char*a	"int8"	"input"	Scalar value Array of scalar values
char** char*[]	"string"	"input"	cell
const char*	"char"		Scalar value Array of scalar values
	"string"	"input"	"nullTerminated"
const char** const char*[]	"char"	"input"	Scalar value Array of scalar values
	"string"	"input"	"nullTerminated"
a These types are equivalent to MATLAB char: wchar_t char16_t char32_t