On the Releases page, download the file that matches your computer, then unzip it.

Inside are two folders:

medius-capi-<your-platform>/
├── include/
│   └── medius.h
└── lib/
    └── libmedius_capi      (.so Linux · .dylib macOS · .dll + .lib Windows · .a static)

include/ holds the header you #include; lib/ holds the library you link.

In your project's Properties (use the same values for C and C++):

1. Under C/C++ → General → Additional Include Directories, add the unzipped include\ folder.
2. Under Linker → General → Additional Library Directories, add the lib\ folder.
3. Under Linker → Input → Additional Dependencies, add medius_capi.dll.lib.
4. Copy medius_capi.dll next to your built .exe (or onto your PATH).

Build and run as normal. To skip the DLL, add medius_capi.lib in step 3 instead (static, nothing to copy).

cl app.c /I include /link /LIBPATH:lib medius_capi.dll.lib
:: C++:  cl /std:c++17 app.cpp /I include /link /LIBPATH:lib medius_capi.dll.lib
:: then copy medius_capi.dll next to app.exe, and run:
app.exe

# C
cc  app.c   -I include -L lib -lmedius_capi -o app
# C++ (same header, same library)
g++ -std=c++17 app.cpp -I include -L lib -lmedius_capi -o app

# run (tell the loader where the library is)
LD_LIBRARY_PATH=lib ./app        # macOS: DYLD_LIBRARY_PATH=lib ./app

On Linux add -lpthread. To avoid setting a path at run time, link the static libmedius_capi.a instead.

medius_version_string and medius_abi_version are pure library calls. If this builds and prints a version, you're set.

// app.c
#include <stdio.h>
#include <medius.h>

int main(void) {
    printf("%s, abi %u\n", medius_version_string(), medius_abi_version());
    return 0;
}

medius_device_find opens the first box it sees and runs the handshake; medius_device_free closes it. Full walk-through on First program.

MediusDevice *dev = NULL;
if (medius_device_find(&dev) != MEDIUS_STATUS_OK) { /* see Calls & errors */ }

MediusVersion v;
medius_device_query_version(dev, &v);
printf("firmware %u.%u.%u\n", v.fw_major, v.fw_minor, v.fw_patch);

medius_device_free(dev);

Every call returns a MediusStatus you check; reading the failure text is on Calls & errors. The full call list is the API index.