Three executables (coming with source code) serve as examples for controlling ngspice. These are not meant to be `production' programs, but just give some commented example usages of the interface.

ng_start.exe is a MS Windows application loading ngspice.dll dynamically. All functions and callbacks of the interface are assessed. The source code, generated with Turbo Delphi 2006, may be found here, the binaries compiled for 32 Bit are here.

Two console applications, compilable with Linux, CYGWIN, MINGW or MS Visual Studio, are available here, demonstrating either linking upon start-up or loading shared ngspice dynamically at runtime. A simple feedback loop is shown in tests 3 and 4, where a device parameter is changed upon having an output vector value crossing a limit.

An XSPICE event node example may be assessed at ngspice/visualc/ng_shared_xspice_v, currently tested only with MS Windows and compiled with Visual Studio.