new file mode 100644
--- /dev/null
+++ b/src/os_w32exe.c
@@ -0,0 +1,136 @@
+/* vi:set ts=8 sts=4 sw=4:
+ *
+ * VIM - Vi IMproved		by Bram Moolenaar
+ *				GUI support by Robert Webb
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+/*
+ * Windows GUI: main program (EXE) entry point:
+ *
+ * Ron Aaron <ronaharon@yahoo.com> wrote this and  the DLL support code.
+ */
+#include "vim.h"
+
+#ifdef __MINGW32__
+# ifndef _cdecl
+#  define _cdecl
+# endif
+#endif
+
+/* cproto doesn't create a prototype for main() */
+int _cdecl
+#if defined(FEAT_GUI_W32)
+VimMain
+#else
+    main
+#endif
+	__ARGS((int argc, char **argv));
+int (_cdecl *pmain)(int, char **);
+
+#ifndef PROTO
+#ifdef FEAT_GUI
+#ifndef VIMDLL
+void _cdecl SaveInst(HINSTANCE hInst);
+#endif
+void (_cdecl *pSaveInst)(HINSTANCE);
+#endif
+
+    int WINAPI
+WinMain(
+    HINSTANCE	hInstance,
+    HINSTANCE	hPrevInst,
+    LPSTR	lpszCmdLine,
+    int		nCmdShow)
+{
+    int		argc;
+    char	**argv;
+    char	*tofree;
+    char	prog[256];
+#ifdef VIMDLL
+    char	*p;
+    HANDLE	hLib;
+#endif
+
+    /* Ron: added full path name so that the $VIM variable will get set to our
+     * startup path (so the .vimrc file can be found w/o a VIM env. var.) */
+    GetModuleFileName(NULL, prog, 255);
+
+    /* Separate the command line into arguments. */
+    argc = get_cmd_args(prog, (char *)lpszCmdLine, &argv, &tofree);
+    if (argc == 0)
+    {
+	MessageBox(0, _("Could not allocate memory for command line."),
+							   _("VIM Error"), 0);
+	return 0;
+    }
+
+#ifdef DYNAMIC_GETTEXT
+    /* Initialize gettext library */
+    dyn_libintl_init(NULL);
+#endif
+
+#ifdef VIMDLL
+    // LoadLibrary - get name of dll to load in here:
+    p = strrchr(prog, '\\');
+    if (p != NULL)
+    {
+# ifdef DEBUG
+	strcpy(p+1, "vim32d.dll");
+# else
+	strcpy(p+1, "vim32.dll");
+# endif
+    }
+    hLib = LoadLibrary(prog);
+    if (hLib == NULL)
+    {
+	MessageBox(0, _("Could not load vim32.dll!"), _("VIM Error"), 0);
+	goto errout;
+    }
+    // fix up the function pointers
+# ifdef FEAT_GUI
+    pSaveInst = GetProcAddress(hLib, (LPCSTR)2);
+# endif
+    pmain = GetProcAddress(hLib, (LPCSTR)1);
+    if (pmain == NULL)
+    {
+	MessageBox(0, _("Could not fix up function pointers to the DLL!"),
+							    _("VIM Error"),0);
+	goto errout;
+    }
+#else
+# ifdef FEAT_GUI
+    pSaveInst = SaveInst;
+# endif
+    pmain =
+# if defined(FEAT_GUI_W32)
+    //&& defined(__MINGW32__)
+	VimMain
+# else
+	main
+# endif
+	;
+#endif
+#ifdef FEAT_GUI
+    pSaveInst(
+#ifdef __MINGW32__
+	    GetModuleHandle(NULL)
+#else
+	    hInstance
+#endif
+	    );
+#endif
+    pmain(argc, argv);
+
+#ifdef VIMDLL
+    FreeLibrary(hLib);
+errout:
+#endif
+    free(argv);
+    free(tofree);
+
+    return 0;
+}
+#endif