Aufruf von C aus MATLAB heraus

Direktaufruf von C Bibliotheksfunktionen aus MATLAB^® R2021b oder früher heraus mithilfe der Funktion calllib

Eine freigegebene Bibliothek ist eine Zusammenstellung von Funktionen, die zur Laufzeit dynamisch von einer Anwendung geladen werden.

Hinweis

Verwenden Sie diese MATLAB-Schnittstelle in MATLAB R2021b oder früher, um C Bibliotheksfunktionen aufzurufen. Die empfohlene Methode zum Aufrufen von C und C++ Bibliotheken ist die Erstellung einer MATLAB-Schnittstelle zur Bibliothek. Weitere Informationen finden Sie unter Aufrufen von C/C++ aus MATLAB. (seit R2022a)

Funktionen

`loadlibrary`	Load C shared library into MATLAB
`unloadlibrary`	Unload shared C library from memory
`calllib`	Call function in C shared library
`libfunctions`	Return information on functions in shared C library
`libfunctionsview`	Display shared C library function signatures in window
`libisloaded`	Determine if shared C library is loaded
`libpointer`	Pointer object for use with shared C library
`libstruct`	Convert MATLAB structure to C-style structure for use with shared C library

Klassen

lib.pointer Pointer object compatible with C pointer

Themen

Call Functions in C Library Loaded with loadlibrary

How to call functions in external, shared C libraries from MATLAB using calllib.
- Load and Unload C Shared Library
- View Library Functions
- Invoke Library Functions
- Shared Library shrlibsample
- Iterate Through lib.pointer Object
Pass Arguments to Shared C Library Functions

How to construct MATLAB arguments compatible with the argument types found in the library functions.
- Pass String Arguments Examples
- Pass Arrays Examples
- Pass Enumerated Types Examples
Represent Pointer Arguments in C Shared Library Functions

How to use libpointer to pass arguments by reference.
- Pass Pointers Examples
Represent Structure Arguments in C Shared Library Functions

Requirements for passing a MATLAB structure to an external library function.
- Pass Structures Examples
- Explore libstruct Objects
MATLAB Prototype Files
How to modify C header file information.

Fehlersuche

Limitations to Shared Library Support

C language features not supported.

Limitations Using Structures

Rules for using C language structures in a shared library.

Loading Library Errors

Errors occur when the shared library is not a valid library.

No Matching Signature Error

This error occurs when you call a function without the correct input or output arguments, or if there is an error in the function signature in the header file.

MATLAB Terminates Unexpectedly When Calling Function in Shared Library

Some shared libraries, compiled as Microsoft^® Windows^® 32-bit libraries, use a calling convention that is incompatible with the default MATLAB calling convention.