Question

How do I go about adding support to my Windows Forms Application to be able to launch with parameters?

I’m using C++.

Answer 1

If you are writing Win32 gui application then your entry point it WinMain:

int CALLBACK WinMain(
  _In_  HINSTANCE hInstance,
  _In_  HINSTANCE hPrevInstance,
  _In_  LPSTR lpCmdLine,
  _In_  int nCmdShow
);

The third parameter, lpCmdLine is the command line passed to the application. The command line parameters passed to the application will be in that string.