Remove the stub Win32 GUI.

It is only confusing and doesn't add anything atm.
If we want to go for WIMP-based GUI, it will be using a multi-platform toolkit anyways.

Makefile.win

@@ -64,7 +64,6 @@ HAVE_STDIN_CMD = 1
 HAVE_THREADS = 1
 HAVE_RGUI = 1
 DYNAMIC = 1
-HAVE_WIN32GUI = 1
 
 HAVE_WINXINPUT = 1
 
@@ -105,10 +104,6 @@ ifeq ($(HAVE_RGUI), 1)
    OBJ += frontend/menu/menu_common.o frontend/menu/menu_context.o frontend/menu/rgui.o frontend/menu/history.o
 endif
 
-ifeq ($(HAVE_WIN32GUI), 1)
-   DEFINES += -DHAVE_WIN32GUI
-endif
-
 ifeq ($(HAVE_SDL), 1)
    OBJ += gfx/sdl_gfx.o input/sdl_input.o input/sdl_joypad.o audio/sdl_audio.o
    JOBJ += input/sdl_joypad.o

gfx/context/wgl_ctx.c

@@ -25,7 +25,6 @@
 #include "../gfx_context.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
-#include "../../media/resource.h"
 #include <windows.h>
 #include <commdlg.h>
 #include <string.h>
@@ -176,24 +175,6 @@ static void create_gl_context(HWND hwnd)
    }
 }
 
-static bool BrowseForFile(char *filename)
-{
-   OPENFILENAME ofn;
-   memset(&ofn, 0, sizeof(OPENFILENAME));
-
-   ofn.lStructSize = sizeof(OPENFILENAME);
-   ofn.hwndOwner = g_hwnd;
-   ofn.lpstrFilter = "All Files\0*.*\0\0";
-   ofn.lpstrFile = filename;
-   ofn.lpstrTitle = "Select ROM";
-   ofn.lpstrDefExt = "";
-   ofn.nMaxFile = PATH_MAX;
-   ofn.Flags = OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
-   if (GetOpenFileName(&ofn))
-      return true;
-   return false;
-}
-
 static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       WPARAM wparam, LPARAM lparam)
 {
@@ -244,29 +225,6 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
             g_resized = true;
          }
          return 0;
-
-      case WM_COMMAND:
-         switch (wparam & 0xffff)
-         {
-            case ID_M_OPENROM:
-            {
-               char rom_file[PATH_MAX] = {0};
-               if (BrowseForFile(rom_file))
-               {
-                  strlcpy(g_extern.fullpath, rom_file, sizeof(g_extern.fullpath));
-                  g_extern.lifecycle_mode_state |= (1ULL << MODE_LOAD_GAME);
-                  PostMessage(g_hwnd, WM_CLOSE, 0, 0);
-               }
-               break;
-            }
-            case ID_M_RESET:
-               rarch_game_reset();
-               break;
-            case ID_M_QUIT:
-               PostMessage(g_hwnd, WM_CLOSE, 0, 0);
-               break;
-         }
-         break;
    }
 
    return DefWindowProc(hwnd, message, wparam, lparam);
@@ -469,17 +427,6 @@ static bool gfx_ctx_set_video_mode(
    if (!g_hwnd)
       goto error;
 
-#ifdef HAVE_WIN32GUI
-   if (!fullscreen)
-   {
-      SetMenu(g_hwnd, LoadMenu(GetModuleHandle(NULL), MAKEINTRESOURCE(IDR_MENU)));
-      RECT rcTemp = {0, 0, width, 0x7FFF}; // 0x7FFF = "Infinite" height
-      SendMessage(g_hwnd, WM_NCCALCSIZE, FALSE, (LPARAM)&rcTemp); // recalculate margin, taking possible menu wrap into account
-      unsigned menu_height = rcTemp.top + rect.top; // rect.top is negative after AdjustWindowRect().
-      SetWindowPos(g_hwnd, NULL, 0, 0, width, height + menu_height, SWP_NOMOVE);
-   }
-#endif
-
    if (!fullscreen || windowed_full)
    {
       ShowWindow(g_hwnd, SW_RESTORE);

media/rarch.rc

@@ -1,13 +1 @@
-#include "resource.h"
 1                       ICON                    "retroarch-icon.ico"
-
-IDR_MENU MENU
-BEGIN
-    POPUP "File"
-    BEGIN
-        MENUITEM "Open ROM",                                    ID_M_OPENROM
-        MENUITEM SEPARATOR
-        MENUITEM "Reset",                                       ID_M_RESET
-        MENUITEM "Quit",                                        ID_M_QUIT
-    END
-END

media/resource.h

@@ -1,6 +0,0 @@
-// Used by rarch.rc
-//
-#define IDR_MENU                              101
-#define ID_M_OPENROM                          40001
-#define ID_M_RESET                            40002
-#define ID_M_QUIT                             40003