Can I send a ctrl-C (SIGINT) to an application on Windows?

Question

I have (in the past) written cross-platform (Windows/Unix) applications which, when started from the command line, handled a user-typed Ctrl-C combinat

Answer 1

Thanks to jimhark's answer and other answers here, I found a way to do it in PowerShell:

$ProcessID = 1234
$MemberDefinition = '
    [DllImport("kernel32.dll")]public static extern bool FreeConsole();
    [DllImport("kernel32.dll")]public static extern bool AttachConsole(uint p);
    [DllImport("kernel32.dll")]public static extern bool GenerateConsoleCtrlEvent(uint e, uint p);
    public static void SendCtrlC(uint p) {
        FreeConsole();
        if (AttachConsole(p)) {
            GenerateConsoleCtrlEvent(0, p);
            FreeConsole();
        }
        AttachConsole(uint.MaxValue);
    }'
Add-Type -Name 'dummyName' -Namespace 'dummyNamespace' -MemberDefinition $MemberDefinition
[dummyNamespace.dummyName]::SendCtrlC($ProcessID) }

What made things work was sending the GenerateConsoleCtrlEvent to the desired process group instead of all processes that share the console of the calling process and AttachConsole back to the console of the parent of the current process.