Re: Is there a way to work with processes in Windows without extern(c)?

[Dennis via Digitalmars-d-learn]

On Wednesday, 13 January 2021 at 14:04:52 UTC, dog2002 wrote:
I could use extern(c) and Process Walking (Process32First, 
Process32Next), but maybe there is a way to get the list by 
means of D?

I don't think this is part of the standard library.
Here's a piece of code I wrote a while ago if that's useful:

```
pragma(lib, "Kernel32.lib");

/**
 * Get a list of tuples for each currently running process, 
containing name and id
 * Returns:
 *   array of (name, id) tuples
 */
auto getProcessList() @system {
	import core.sys.windows.tlhelp32: CreateToolhelp32Snapshot, 
TH32CS_SNAPPROCESS,
                Process32First, Process32Next, PROCESSENTRY32;
	import core.sys.windows.windows: HANDLE, INVALID_HANDLE_VALUE, 
CloseHandle;

        import std.typecons: Tuple, tuple;
        import std.string: fromStringz;
        import std.conv: to;

        HANDLE hProcessSnap;
        PROCESSENTRY32 pe32;
        hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
        scope(exit) CloseHandle(hProcessSnap);

        alias restype = Tuple!(string, "name", int, "id");
        restype[] result = [];

        if (hProcessSnap != INVALID_HANDLE_VALUE) {
                pe32.dwSize = PROCESSENTRY32.sizeof;
                for (auto notAtEnd = Process32First(hProcessSnap, &pe32);
                        notAtEnd;
                        notAtEnd = Process32Next(hProcessSnap, &pe32)
                ) {
			string processName = 
pe32.szExeFile[].ptr.fromStringz.to!string;
                        result ~= restype(processName, pe32.th32ProcessID);
                }
        }

        return result;
}
```