How to create a process by a "LPTHREAD_START_ROUTINE lpStartAddress" alike argument?

Question

I want to create a process with syntax similar to the following,except that I don't want to create a thread：

     hThread = CreateThread( 
        NULL,              // no security attribute 
        0,                 // default stack size 
        InstanceThread,    // thread proc
        (LPVOID) hPipe,    // thread parameter 
        0,                 // not suspended 
        &dwThreadId);      // returns thread ID 

But I've checked the reference for CreateProcess and a sample :

BOOL result = ::CreateProcess(
  L"C:\\Windows\\NOTEPAD.exe",
  NULL,
  NULL,
  NULL,
  FALSE,
  NORMAL_PRIORITY_CLASS,
  NULL,
  NULL,
  &startupInfo,
  &processInformation
);

It seems I must specify an existing executable to create a process? How can I create one by a callback similar to InstanceThread ?

Answer 1

You cannot do this. Processes and threads are different. You cannot create a process by just giving the address of a function in your executable.

You could, however, create your process with some command-line argument that your process reads and then uses to call the target function you want.

What are you trying to achieve?

Answer 2

Perhaps look how cygwin implements fork(). Unix fork() is what you want here.