added support for WindowsCE (building on top of klimt)
[freeglut] / src / freeglut_window.c
index eb1842d..8933a30 100644 (file)
 #include <GL/freeglut.h>
 #include "freeglut_internal.h"
 
+#if TARGET_HOST_WINCE
+#include <aygshell.h>
+#pragma comment( lib, "Aygshell.lib" )
+
+wchar_t* wstr_from_str(const char* str)
+{
+    int i,len=strlen(str);
+    wchar_t* wstr = (wchar_t*)malloc(2*len+2);
+    for(i=0; i<len; i++)
+        wstr[i] = str[i];
+    wstr[len] = 0;
+       return wstr;
+}
+
+
+#endif //TARGET_HOST_WINCE
+
 /*
  * TODO BEFORE THE STABLE RELEASE:
  *
@@ -154,6 +171,9 @@ XVisualInfo* fgChooseVisual( void )
 GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
                               unsigned char layer_type )
 {
+#if TARGET_HOST_WINCE
+       return GL_TRUE;
+#else
     PIXELFORMATDESCRIPTOR* ppfd, pfd;
     int flags, pixelformat;
 
@@ -203,7 +223,7 @@ GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
 
     pfd.cColorBits = (BYTE) GetDeviceCaps( window->Window.Device, BITSPIXEL );
     ppfd = &pfd;
-    
+
     pixelformat = ChoosePixelFormat( window->Window.Device, ppfd );
     if( pixelformat == 0 )
         return GL_FALSE;
@@ -211,6 +231,7 @@ GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly,
     if( checkOnly )
         return GL_TRUE;
     return SetPixelFormat( window->Window.Device, pixelformat, ppfd );
+#endif //TARGET_HOST_WINCE
 }
 #endif
 
@@ -227,7 +248,7 @@ void fgSetWindow ( SFG_Window *window )
             window->Window.Handle,
             window->Window.Context
         );
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
     if( fgStructure.Window )
         ReleaseDC( fgStructure.Window->Window.Handle,
                    fgStructure.Window->Window.Device );
@@ -235,8 +256,8 @@ void fgSetWindow ( SFG_Window *window )
     if ( window )
     {
         window->Window.Device = GetDC( window->Window.Handle );
-        wglMakeCurrent( 
-            window->Window.Device, 
+        wglMakeCurrent(
+            window->Window.Device,
             window->Window.Context
         );
     }
@@ -293,7 +314,7 @@ void fgOpenWindow( SFG_Window* window, const char* title,
             window->Window.VisualInfo = fgChooseVisual( );
             fgState.DisplayMode &= ~GLUT_DOUBLE;
         }
-        
+
         /*
          * GLUT also checks for multi-sampling, but I don't see that
          * anywhere else in FREEGLUT so I won't bother with it for the moment.
@@ -308,70 +329,49 @@ void fgOpenWindow( SFG_Window* window, const char* title,
      */
     assert( window->Window.VisualInfo != NULL );
 
-    window->State.IsOffscreen = GL_FALSE;
-    if( fgState.DisplayMode & GLUT_OFFSCREEN )
-    {
-        window->State.IsOffscreen = GL_TRUE;
-        window->Window.Pixmap = XCreatePixmap(
-            fgDisplay.Display, fgDisplay.RootWindow,
-            w, h,
-            window->Window.VisualInfo->depth
-        );
-        if( False != window->Window.Pixmap )
-        {
-            window->Window.Handle = glXCreateGLXPixmap(
-                fgDisplay.Display,
-                window->Window.VisualInfo,
-                window->Window.Pixmap
-            );
-            if( False == window->Window.Handle )
-                XFreePixmap( fgDisplay.Display, window->Window.Pixmap );
-        }
-    }
-    else
-    {
-        /*
-         * XXX HINT: the masks should be updated when adding/removing callbacks.
-         * XXX       This might speed up message processing. Is that true?
-         * XXX
-         * XXX A: Not appreciably, but it WILL make it easier to debug.
-         * XXX    Try tracing old GLUT and try tracing freeglut.  Old GLUT
-         * XXX    turns off events that it doesn't need and is a whole lot
-         * XXX    more pleasant to trace.  (Think mouse-motion!  Tons of
-         * XXX    ``bonus'' GUI events stream in.)
-         */
-        winAttr.event_mask        =
-            StructureNotifyMask | SubstructureNotifyMask | ExposureMask |
-            ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyRelease |
-            VisibilityChangeMask | EnterWindowMask | LeaveWindowMask |
-            PointerMotionMask | ButtonMotionMask;
-        winAttr.background_pixmap = None;
-        winAttr.background_pixel  = 0;
-        winAttr.border_pixel      = 0;
-
-        winAttr.colormap = XCreateColormap(
-            fgDisplay.Display, fgDisplay.RootWindow,
-            window->Window.VisualInfo->visual, AllocNone
-        );
 
-        mask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
+    /*
+     * XXX HINT: the masks should be updated when adding/removing callbacks.
+     * XXX       This might speed up message processing. Is that true?
+     * XXX
+     * XXX A: Not appreciably, but it WILL make it easier to debug.
+     * XXX    Try tracing old GLUT and try tracing freeglut.  Old GLUT
+     * XXX    turns off events that it doesn't need and is a whole lot
+     * XXX    more pleasant to trace.  (Think mouse-motion!  Tons of
+     * XXX    ``bonus'' GUI events stream in.)
+     */
+    winAttr.event_mask        =
+        StructureNotifyMask | SubstructureNotifyMask | ExposureMask |
+        ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyRelease |
+        VisibilityChangeMask | EnterWindowMask | LeaveWindowMask |
+        PointerMotionMask | ButtonMotionMask;
+    winAttr.background_pixmap = None;
+    winAttr.background_pixel  = 0;
+    winAttr.border_pixel      = 0;
+
+    winAttr.colormap = XCreateColormap(
+        fgDisplay.Display, fgDisplay.RootWindow,
+        window->Window.VisualInfo->visual, AllocNone
+    );
 
-        if ( window->IsMenu )
-        {
-            winAttr.override_redirect = True;
-            mask |= CWOverrideRedirect;
-        }
+    mask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
 
-        window->Window.Handle = XCreateWindow(
-            fgDisplay.Display,
-            window->Parent == NULL ? fgDisplay.RootWindow :
-                                     window->Parent->Window.Handle,
-            x, y, w, h, 0,
-            window->Window.VisualInfo->depth, InputOutput,
-            window->Window.VisualInfo->visual, mask,
-            &winAttr
-        );
+    if( window->IsMenu )
+    {
+        winAttr.override_redirect = True;
+        mask |= CWOverrideRedirect;
     }
+
+    window->Window.Handle = XCreateWindow(
+        fgDisplay.Display,
+        window->Parent == NULL ? fgDisplay.RootWindow :
+        window->Parent->Window.Handle,
+        x, y, w, h, 0,
+        window->Window.VisualInfo->depth, InputOutput,
+        window->Window.VisualInfo->visual, mask,
+        &winAttr
+    );
+
     /*
      * The GLX context creation, possibly trying the direct context rendering
      *  or else use the current context if the user has so specified
@@ -446,39 +446,43 @@ void fgOpenWindow( SFG_Window* window, const char* title,
      * that they should replace a window manager that they like, and which
      * works, just because *we* think that it's not "modern" enough.
      */
+#if TARGET_HOST_WINCE
+    sizeHints.x      = 0;
+    sizeHints.y      = 0;
+    sizeHints.width  = 320;
+    sizeHints.height = 240;
+#else
     sizeHints.x      = x;
     sizeHints.y      = y;
     sizeHints.width  = w;
     sizeHints.height = h;
+#endif //TARGET_HOST_WINCE
 
     wmHints.flags = StateHint;
     wmHints.initial_state = fgState.ForceIconic ? IconicState : NormalState;
-    if( GL_FALSE == window->State.IsOffscreen )
-    {
-        /*
-         * Prepare the window and iconified window names...
-         */
-        XStringListToTextProperty( (char **) &title, 1, &textProperty );
+    /*
+     * Prepare the window and iconified window names...
+     */
+    XStringListToTextProperty( (char **) &title, 1, &textProperty );
 
-        XSetWMProperties(
-            fgDisplay.Display,
-            window->Window.Handle,
-            &textProperty,
-            &textProperty,
-            0,
-            0,
-            &sizeHints,
-            &wmHints,
-            NULL
-        );
-    
-        XSetWMProtocols( fgDisplay.Display, window->Window.Handle,
-                         &fgDisplay.DeleteWindow, 1 );
-    
-        XMapWindow( fgDisplay.Display, window->Window.Handle );
-    }
-    
-#elif TARGET_HOST_WIN32
+    XSetWMProperties(
+        fgDisplay.Display,
+        window->Window.Handle,
+        &textProperty,
+        &textProperty,
+        0,
+        0,
+        &sizeHints,
+        &wmHints,
+        NULL
+    );
+
+    XSetWMProtocols( fgDisplay.Display, window->Window.Handle,
+                     &fgDisplay.DeleteWindow, 1 );
+
+    XMapWindow( fgDisplay.Display, window->Window.Handle );
+
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
     WNDCLASS wc;
     DWORD flags;
@@ -486,13 +490,13 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     ATOM atom;
 
     freeglut_assert_ready;
-    
+
     /*
      * Grab the window class we have registered on glutInit():
      */
-    atom = GetClassInfo( fgDisplay.Instance, "FREEGLUT", &wc );
+    atom = GetClassInfo( fgDisplay.Instance, _T("FREEGLUT"), &wc );
     assert( atom != 0 );
-    
+
     if( gameMode )
     {
         assert( window->Parent == NULL );
@@ -505,6 +509,7 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     }
     else
     {
+#if !TARGET_HOST_WINCE
         if ( ( ! isSubWindow ) && ( ! window->IsMenu ) )
         {
             /*
@@ -516,6 +521,7 @@ void fgOpenWindow( SFG_Window* window, const char* title,
             h += (GetSystemMetrics( SM_CYSIZEFRAME ) )*2 +
                 GetSystemMetrics( SM_CYCAPTION );
         }
+#endif //TARGET_HOST_WINCE
 
         if( ! fgState.Position.Use )
         {
@@ -539,12 +545,39 @@ void fgOpenWindow( SFG_Window* window, const char* title,
             flags |= WS_POPUP;
             exFlags |= WS_EX_TOOLWINDOW;
         }
+#if !TARGET_HOST_WINCE
         else if( window->Parent == NULL )
             flags |= WS_OVERLAPPEDWINDOW;
+#endif
         else
             flags |= WS_CHILD;
     }
 
+#if TARGET_HOST_WINCE
+       {
+               wchar_t* wstr = wstr_from_str(title);
+
+               window->Window.Handle = CreateWindow( 
+                       _T("FREEGLUT"),
+                       wstr,
+                       WS_VISIBLE | WS_POPUP,
+                       0,0, 240,320,
+                       NULL,
+                       NULL,
+                       fgDisplay.Instance,
+                       (LPVOID) window
+               );
+
+               free(wstr);
+
+               SHFullScreen(window->Window.Handle, SHFS_HIDESTARTICON);
+               SHFullScreen(window->Window.Handle, SHFS_HIDESIPBUTTON);
+               SHFullScreen(window->Window.Handle, SHFS_HIDETASKBAR);
+               MoveWindow(window->Window.Handle, 0, 0, 240, 320, TRUE);
+               ShowWindow(window->Window.Handle, SW_SHOW);
+               UpdateWindow(window->Window.Handle);
+       }
+#else
     window->Window.Handle = CreateWindowEx(
         exFlags,
         "FREEGLUT",
@@ -556,11 +589,18 @@ void fgOpenWindow( SFG_Window* window, const char* title,
         fgDisplay.Instance,
         (LPVOID) window
     );
+#endif TARGET_HOST_WINCE
+
     if( !( window->Window.Handle ) )
         fgError( "Failed to create a window (%s)!", title );
 
+#if TARGET_HOST_WINCE
+    ShowWindow( window->Window.Handle, SW_SHOW );
+#else
     ShowWindow( window->Window.Handle,
                 fgState.ForceIconic ? SW_SHOWMINIMIZED : SW_SHOW );
+#endif //TARGET_HOST_WINCE
+
     UpdateWindow( window->Window.Handle );
     ShowCursor( TRUE );  /* XXX Old comments say "hide cusror"! */
 
@@ -588,16 +628,12 @@ void fgCloseWindow( SFG_Window* window )
 #if TARGET_HOST_UNIX_X11
 
     glXDestroyContext( fgDisplay.Display, window->Window.Context );
-    if( GL_FALSE == window->State.IsOffscreen )
-        XDestroyWindow( fgDisplay.Display, window->Window.Handle );
-    else
-    {
-        glXDestroyGLXPixmap( fgDisplay.Display, window->Window.Handle );
-        XFreePixmap( fgDisplay.Display, window->Window.Pixmap );
-    }
+    glXDestroyGLXPixmap( fgDisplay.Display, window->Window.Handle );
+    XFreePixmap( fgDisplay.Display, window->Window.Pixmap );
+
     XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
     /*
      * Make sure we don't close a window with current context active
@@ -649,18 +685,16 @@ int FGAPIENTRY glutCreateWindow( const char* title )
 int FGAPIENTRY glutCreateSubWindow( int parentID, int x, int y, int w, int h )
 {
     int ret = 0;
-    
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
-        SFG_Window* window = NULL;
-        SFG_Window* parent = NULL;
-
-        freeglut_assert_ready;
-        parent = fgWindowByID( parentID );
-        freeglut_return_val_if_fail( parent != NULL, 0 );
-        window = fgCreateWindow( parent, "", x, y, w, h, GL_FALSE, GL_FALSE );
-        ret = window->ID;
-    }
+
+    SFG_Window* window = NULL;
+    SFG_Window* parent = NULL;
+
+    freeglut_assert_ready;
+    parent = fgWindowByID( parentID );
+    freeglut_return_val_if_fail( parent != NULL, 0 );
+    window = fgCreateWindow( parent, "", x, y, w, h, GL_FALSE, GL_FALSE );
+    ret = window->ID;
+
     return ret;
 }
 
@@ -719,19 +753,17 @@ void FGAPIENTRY glutShowWindow( void )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        XMapWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
-        XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
+    XMapWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
+    XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
-        ShowWindow( fgStructure.Window->Window.Handle, SW_SHOW );
+    ShowWindow( fgStructure.Window->Window.Handle, SW_SHOW );
 
 #endif
-    }
+
     fgStructure.Window->State.Redisplay = GL_TRUE;
 }
 
@@ -743,25 +775,23 @@ void FGAPIENTRY glutHideWindow( void )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        if( fgStructure.Window->Parent == NULL )
-            XWithdrawWindow( fgDisplay.Display,
-                             fgStructure.Window->Window.Handle,
-                             fgDisplay.Screen );
-        else
-            XUnmapWindow( fgDisplay.Display,
-                          fgStructure.Window->Window.Handle );
-        XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
+    if( fgStructure.Window->Parent == NULL )
+        XWithdrawWindow( fgDisplay.Display,
+                         fgStructure.Window->Window.Handle,
+                         fgDisplay.Screen );
+    else
+        XUnmapWindow( fgDisplay.Display,
+                      fgStructure.Window->Window.Handle );
+    XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
-        ShowWindow( fgStructure.Window->Window.Handle, SW_HIDE );
+    ShowWindow( fgStructure.Window->Window.Handle, SW_HIDE );
 
 #endif
-    }
+
     fgStructure.Window->State.Redisplay = GL_FALSE;
 }
 
@@ -774,20 +804,18 @@ void FGAPIENTRY glutIconifyWindow( void )
     freeglut_assert_window;
 
     fgStructure.Window->State.Visible   = GL_FALSE;
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        XIconifyWindow( fgDisplay.Display, fgStructure.Window->Window.Handle,
-                        fgDisplay.Screen );
-        XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
+    XIconifyWindow( fgDisplay.Display, fgStructure.Window->Window.Handle,
+                    fgDisplay.Screen );
+    XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
-        ShowWindow( fgStructure.Window->Window.Handle, SW_MINIMIZE );
+    ShowWindow( fgStructure.Window->Window.Handle, SW_MINIMIZE );
 
 #endif
-    }
+
     fgStructure.Window->State.Redisplay = GL_FALSE;
 }
 
@@ -798,30 +826,37 @@ void FGAPIENTRY glutSetWindowTitle( const char* title )
 {
     freeglut_assert_ready;
     freeglut_assert_window;
-    if( ! fgStructure.Window->Parent &&
-        ( GL_FALSE == fgStructure.Window->State.IsOffscreen ) )
+    if( ! fgStructure.Window->Parent )
     {
 #if TARGET_HOST_UNIX_X11
 
         XTextProperty text;
-        
+
         text.value = (unsigned char *) title;
         text.encoding = XA_STRING;
         text.format = 8;
         text.nitems = strlen( title );
-        
+
         XSetWMName(
             fgDisplay.Display,
             fgStructure.Window->Window.Handle,
             &text
         );
-        
+
         XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
 #elif TARGET_HOST_WIN32
 
         SetWindowText( fgStructure.Window->Window.Handle, title );
 
+#elif TARGET_HOST_WINCE
+               {
+                       wchar_t* wstr = wstr_from_str(title);
+
+                       SetWindowText( fgStructure.Window->Window.Handle, wstr );
+
+                       free(wstr);
+               }
 #endif
     }
 }
@@ -834,13 +869,12 @@ void FGAPIENTRY glutSetIconTitle( const char* title )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( ! fgStructure.Window->Parent &&
-        GL_FALSE == fgStructure.Window->State.IsOffscreen )
+    if( ! fgStructure.Window->Parent )
     {
 #if TARGET_HOST_UNIX_X11
 
         XTextProperty text;
-        
+
         text.value = (unsigned char *) title;
         text.encoding = XA_STRING;
         text.format = 8;
@@ -858,6 +892,14 @@ void FGAPIENTRY glutSetIconTitle( const char* title )
 
         SetWindowText( fgStructure.Window->Window.Handle, title );
 
+#elif TARGET_HOST_WINCE
+               {
+                       wchar_t* wstr = wstr_from_str(title);
+
+                       SetWindowText( fgStructure.Window->Window.Handle, wstr );
+
+                       free(wstr);
+               }
 #endif
     }
 }
@@ -870,13 +912,9 @@ void FGAPIENTRY glutReshapeWindow( int width, int height )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    /* XXX Could delete/create/set-window-id for offscreen. */
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
-        fgStructure.Window->State.NeedToResize = GL_TRUE;
-        fgStructure.Window->State.Width  = width ;
-        fgStructure.Window->State.Height = height;
-    }
+    fgStructure.Window->State.NeedToResize = GL_TRUE;
+    fgStructure.Window->State.Width  = width ;
+    fgStructure.Window->State.Height = height;
 }
 
 /*
@@ -887,18 +925,17 @@ void FGAPIENTRY glutPositionWindow( int x, int y )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        XMoveWindow( fgDisplay.Display, fgStructure.Window->Window.Handle,
-                     x, y );
-        XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
-
-#elif TARGET_HOST_WIN32
+    XMoveWindow( fgDisplay.Display, fgStructure.Window->Window.Handle,
+                 x, y );
+    XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
 
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
+    
+    {
         RECT winRect;
-        
+
         GetWindowRect( fgStructure.Window->Window.Handle, &winRect );
         MoveWindow(
             fgStructure.Window->Window.Handle,
@@ -908,9 +945,9 @@ void FGAPIENTRY glutPositionWindow( int x, int y )
             winRect.bottom - winRect.top,
             TRUE
         );
+    }
 
 #endif
-    }
 }
 
 /*
@@ -921,23 +958,20 @@ void FGAPIENTRY glutPushWindow( void )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        XLowerWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
+    XLowerWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
-        SetWindowPos(
-            fgStructure.Window->Window.Handle,
-            HWND_BOTTOM,
-            0, 0, 0, 0,
-            SWP_NOSIZE | SWP_NOMOVE
-        );
+    SetWindowPos(
+        fgStructure.Window->Window.Handle,
+        HWND_BOTTOM,
+        0, 0, 0, 0,
+        SWP_NOSIZE | SWP_NOMOVE
+    );
 
 #endif
-    }
 }
 
 /*
@@ -948,23 +982,20 @@ void FGAPIENTRY glutPopWindow( void )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
-    {
 #if TARGET_HOST_UNIX_X11
 
-        XRaiseWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
+    XRaiseWindow( fgDisplay.Display, fgStructure.Window->Window.Handle );
 
-#elif TARGET_HOST_WIN32
+#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
 
-        SetWindowPos(
-            fgStructure.Window->Window.Handle,
-            HWND_TOP,
-            0, 0, 0, 0,
-            SWP_NOSIZE | SWP_NOMOVE
-        );
+    SetWindowPos(
+        fgStructure.Window->Window.Handle,
+        HWND_TOP,
+        0, 0, 0, 0,
+        SWP_NOSIZE | SWP_NOMOVE
+    );
 
 #endif
-    }
 }
 
 /*
@@ -975,7 +1006,6 @@ void FGAPIENTRY glutFullScreen( void )
     freeglut_assert_ready;
     freeglut_assert_window;
 
-    if( GL_FALSE == fgStructure.Window->State.IsOffscreen )
     {
 #if TARGET_HOST_UNIX_X11
         int x, y;
@@ -1038,7 +1068,7 @@ void FGAPIENTRY glutFullScreen( void )
                       rect.bottom - rect.top,
                       SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
                       SWP_NOZORDER
-        );
+                    );
 #endif
     }
 }