alternative to assert

[gtkD.git] / src / gdk / Screen.d

/*
 * This file is part of duit.
 *
 * duit is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * duit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with duit; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage

/*
 * Conversion parameters:
 * inFile  = GdkScreen.html
 * outPack = gdk
 * outFile = Screen
 * strct   = GdkScreen
 * realStrct=
 * ctorStrct=
 * clss    = Screen
 * interf  = 
 * class Code: No
 * interface Code: No
 * template for:
 * extend  = 
 * implements:
 * prefixes:
 *      - gdk_screen_
 * omit structs:
 * omit prefixes:
 * omit code:
 * imports:
 *      - cairoLib.cairoLibtypes
 *      - glib.Str
 *      - gdk.Screen
 *      - gdk.Colormap
 *      - gdk.Visual
 *      - gdk.Window
 *      - gdk.Display
 *      - glib.ListG
 *      - gdk.Rectangle
 *      - gdk.Event
 *      - gobject.Value
 * structWrap:
 *      - GList* -> ListG
 *      - GValue* -> Value
 *      - GdkColormap* -> Colormap
 *      - GdkDisplay* -> Display
 *      - GdkEvent* -> Event
 *      - GdkRectangle* -> Rectangle
 *      - GdkScreen* -> Screen
 *      - GdkVisual* -> Visual
 *      - GdkWindow* -> Window
 * local aliases:
 */

module gdk.Screen;

private import gdk.gdktypes;

private import lib.gdk;

private import cairoLib.cairoLibtypes;
private import glib.Str;
private import gdk.Screen;
private import gdk.Colormap;
private import gdk.Visual;
private import gdk.Window;
private import gdk.Display;
private import glib.ListG;
private import gdk.Rectangle;
private import gdk.Event;
private import gobject.Value;

/**
 * Description
 *  GdkScreen objects are the GDK representation of a physical screen. It is used
 *  throughout GDK and GTK+ to specify which screen the top level windows
 *  are to be displayed on.
 *  It is also used to query the screen specification and default settings such as
 *  the default colormap (gdk_screen_get_default_colormap()),
 *  the screen width (gdk_screen_get_width()), etc.
 * Note that a screen may consist of multiple monitors which are merged to
 * form a large screen area.
 */
private import gobject.ObjectG;
public class Screen : ObjectG
{
        
        /** the main Gtk struct */
        protected GdkScreen* gdkScreen;
        
        
        public GdkScreen* getScreenStruct()
        {
                return gdkScreen;
        }
        
        
        /** the main Gtk struct as a void* */
        protected void* getStruct()
        {
                return cast(void*)gdkScreen;
        }
        
        /**
         * Sets our main struct and passes it to the parent class
         */
        public this (GdkScreen* gdkScreen)
        {
                super(cast(GObject*)gdkScreen);
                this.gdkScreen = gdkScreen;
        }
        
        /**
         */
        
        // imports for the signal processing
        private import gobject.Signals;
        private import gdk.gdktypes;
        int[char[]] connectedSignals;
        
        void delegate(Screen)[] onCompositedChangedListeners;
        void addOnCompositedChanged(void delegate(Screen) dlg)
        {
                if ( !("composited-changed" in connectedSignals) )
                {
                        Signals.connectData(
                        getStruct(),
                        "composited-changed",
                        cast(GCallback)&callBackCompositedChanged,
                        this,
                        null,
                        cast(ConnectFlags)0);
                        connectedSignals["composited-changed"] = 1;
                }
                onCompositedChangedListeners ~= dlg;
        }
        extern(C) static void callBackCompositedChanged(GdkScreen* screenStruct, Screen screen)
        {
                bit consumed = false;
                
                foreach ( void delegate(Screen) dlg ; screen.onCompositedChangedListeners )
                {
                        dlg(screen);
                }
                
                return consumed;
        }
        
        void delegate(Screen)[] onSizeChangedListeners;
        void addOnSizeChanged(void delegate(Screen) dlg)
        {
                if ( !("size-changed" in connectedSignals) )
                {
                        Signals.connectData(
                        getStruct(),
                        "size-changed",
                        cast(GCallback)&callBackSizeChanged,
                        this,
                        null,
                        cast(ConnectFlags)0);
                        connectedSignals["size-changed"] = 1;
                }
                onSizeChangedListeners ~= dlg;
        }
        extern(C) static void callBackSizeChanged(GdkScreen* screenStruct, Screen screen)
        {
                bit consumed = false;
                
                foreach ( void delegate(Screen) dlg ; screen.onSizeChangedListeners )
                {
                        dlg(screen);
                }
                
                return consumed;
        }
        
        
        
        /**
         * Gets the default screen for the default display. (See
         * gdk_display_get_default()).
         * Returns:
         *  a GdkScreen, or NULL if there is no default display.
         * Since 2.2
         */
        public static Screen getDefault()
        {
                // GdkScreen* gdk_screen_get_default (void);
                return new Screen( gdk_screen_get_default() );
        }
        
        /**
         * Gets the default colormap for screen.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the default GdkColormap.
         * Since 2.2
         */
        public Colormap getDefaultColormap()
        {
                // GdkColormap* gdk_screen_get_default_colormap  (GdkScreen *screen);
                return new Colormap( gdk_screen_get_default_colormap(gdkScreen) );
        }
        
        /**
         * Sets the default colormap for screen.
         * screen:
         *  a GdkScreen
         * colormap:
         *  a GdkColormap
         * Since 2.2
         */
        public void setDefaultColormap(Colormap colormap)
        {
                // void gdk_screen_set_default_colormap (GdkScreen *screen,  GdkColormap *colormap);
                gdk_screen_set_default_colormap(gdkScreen, (colormap is null) ? null : colormap.getColormapStruct());
        }
        
        /**
         * Gets the system's default colormap for screen
         * screen:
         *  a GdkScreen
         * Returns:
         *  the default colormap for screen.
         * Since 2.2
         */
        public Colormap getSystemColormap()
        {
                // GdkColormap* gdk_screen_get_system_colormap (GdkScreen *screen);
                return new Colormap( gdk_screen_get_system_colormap(gdkScreen) );
        }
        
        /**
         * Get the system's default visual for screen.
         * This is the visual for the root window of the display.
         * The return value should not be freed.
         * screen:
         *  a GdkScreen.
         * Returns:
         *  the system visual
         * Since 2.2
         */
        public Visual getSystemVisual()
        {
                // GdkVisual* gdk_screen_get_system_visual (GdkScreen *screen);
                return new Visual( gdk_screen_get_system_visual(gdkScreen) );
        }
        
        /**
         * Gets the preferred colormap for rendering image data on screen.
         * Not a very useful function; historically, GDK could only render RGB
         * image data to one colormap and visual, but in the current version
         * it can render to any colormap and visual. So there's no need to
         * call this function.
         * screen:
         *  a GdkScreen.
         * Returns:
         *  the preferred colormap
         * Since 2.2
         */
        public Colormap getRgbColormap()
        {
                // GdkColormap* gdk_screen_get_rgb_colormap (GdkScreen *screen);
                return new Colormap( gdk_screen_get_rgb_colormap(gdkScreen) );
        }
        
        /**
         * Gets a "preferred visual" chosen by GdkRGB for rendering image data
         * on screen. In previous versions of
         * GDK, this was the only visual GdkRGB could use for rendering. In
         * current versions, it's simply the visual GdkRGB would have chosen as
         * the optimal one in those previous versions. GdkRGB can now render to
         * drawables with any visual.
         * screen:
         *  a GdkScreen
         * Returns:
         *  The GdkVisual chosen by GdkRGB.
         * Since 2.2
         */
        public Visual getRgbVisual()
        {
                // GdkVisual* gdk_screen_get_rgb_visual (GdkScreen *screen);
                return new Visual( gdk_screen_get_rgb_visual(gdkScreen) );
        }
        
        /**
         * Gets a colormap to use for creating windows or pixmaps with an
         * alpha channel. The windowing system on which GTK+ is running
         * may not support this capability, in which case NULL will
         * be returned. Even if a non-NULL value is returned, its
         * possible that the window's alpha channel won't be honored
         * when displaying the window on the screen: in particular, for
         * X an appropriate windowing manager and compositing manager
         * must be running to provide appropriate display.
         * screen:
         *  a GdkScreen.
         * Returns:
         *  a colormap to use for windows with an alpha channel
         *  or NULL if the capability is not available.
         * Since 2.8
         */
        public Colormap getRgbaColormap()
        {
                // GdkColormap* gdk_screen_get_rgba_colormap (GdkScreen *screen);
                return new Colormap( gdk_screen_get_rgba_colormap(gdkScreen) );
        }
        
        /**
         * Gets a visual to use for creating windows or pixmaps with an
         * alpha channel. See the docs for gdk_screen_get_rgba_colormap()
         * for caveats.
         * screen:
         *  a GdkScreen
         * Returns:
         *  a visual to use for windows with an alpha channel
         *  or NULL if the capability is not available.
         * Since 2.8
         */
        public Visual getRgbaVisual()
        {
                // GdkVisual* gdk_screen_get_rgba_visual (GdkScreen *screen);
                return new Visual( gdk_screen_get_rgba_visual(gdkScreen) );
        }
        
        /**
         * Returns whether windows with an RGBA visual can reasonably
         * be expected to have their alpha channel drawn correctly on
         * the screen.
         * On X11 this function returns whether a compositing manager is
         * compositing screen.
         * screen:
         *  a GdkScreen
         * Returns:
         *  Whether windows with RGBA visuals can reasonably be
         * expected to have their alpha channels drawn correctly on the screen.
         * Since 2.10
         */
        public int isComposited()
        {
                // gboolean gdk_screen_is_composited (GdkScreen *screen);
                return gdk_screen_is_composited(gdkScreen);
        }
        
        /**
         * Gets the root window of screen.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the root window
         * Since 2.2
         */
        public Window getRootWindow()
        {
                // GdkWindow* gdk_screen_get_root_window (GdkScreen *screen);
                return new Window( gdk_screen_get_root_window(gdkScreen) );
        }
        
        /**
         * Gets the display to which the screen belongs.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the display to which screen belongs
         * Since 2.2
         */
        public Display getDisplay()
        {
                // GdkDisplay* gdk_screen_get_display (GdkScreen *screen);
                return new Display( gdk_screen_get_display(gdkScreen) );
        }
        
        /**
         * Gets the index of screen among the screens in the display
         * to which it belongs. (See gdk_screen_get_display())
         * screen:
         *  a GdkScreen
         * Returns:
         *  the index
         * Since 2.2
         */
        public int getNumber()
        {
                // gint gdk_screen_get_number (GdkScreen *screen);
                return gdk_screen_get_number(gdkScreen);
        }
        
        /**
         * Gets the width of screen in pixels
         * screen:
         *  a GdkScreen
         * Returns:
         *  the width of screen in pixels.
         * Since 2.2
         */
        public int getWidth()
        {
                // gint gdk_screen_get_width (GdkScreen *screen);
                return gdk_screen_get_width(gdkScreen);
        }
        
        /**
         * Gets the height of screen in pixels
         * screen:
         *  a GdkScreen
         * Returns:
         *  the height of screen in pixels.
         * Since 2.2
         */
        public int getHeight()
        {
                // gint gdk_screen_get_height (GdkScreen *screen);
                return gdk_screen_get_height(gdkScreen);
        }
        
        /**
         * Gets the width of screen in millimeters.
         * Note that on some X servers this value will not be correct.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the width of screen in millimeters.
         * Since 2.2
         */
        public int getWidthMm()
        {
                // gint gdk_screen_get_width_mm (GdkScreen *screen);
                return gdk_screen_get_width_mm(gdkScreen);
        }
        
        /**
         * Returns the height of screen in millimeters.
         * Note that on some X servers this value will not be correct.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the heigth of screen in millimeters.
         * Since 2.2
         */
        public int getHeightMm()
        {
                // gint gdk_screen_get_height_mm (GdkScreen *screen);
                return gdk_screen_get_height_mm(gdkScreen);
        }
        
        /**
         * Lists the available visuals for the specified screen.
         * A visual describes a hardware image data format.
         * For example, a visual might support 24-bit color, or 8-bit color,
         * and might expect pixels to be in a certain format.
         * Call g_list_free() on the return value when you're finished with it.
         * screen:
         *  the relevant GdkScreen.
         * Returns:
         *  a list of visuals; the list must be freed, but not its
         * contents
         * Since 2.2
         */
        public ListG listVisuals()
        {
                // GList* gdk_screen_list_visuals (GdkScreen *screen);
                return new ListG( gdk_screen_list_visuals(gdkScreen) );
        }
        
        /**
         * Obtains a list of all toplevel windows known to GDK on the screen screen.
         * A toplevel window is a child of the root window (see
         * gdk_get_default_root_window()).
         * The returned list should be freed with g_list_free(), but
         * its elements need not be freed.
         * screen:
         *  The GdkScreen where the toplevels are located.
         * Returns:
         *  list of toplevel windows, free with g_list_free()
         * Since 2.2
         */
        public ListG getToplevelWindows()
        {
                // GList* gdk_screen_get_toplevel_windows (GdkScreen *screen);
                return new ListG( gdk_screen_get_toplevel_windows(gdkScreen) );
        }
        
        /**
         * Determines the name to pass to gdk_display_open() to get
         * a GdkDisplay with this screen as the default screen.
         * screen:
         *  a GdkScreen
         * Returns:
         *  a newly allocated string, free with g_free()
         * Since 2.2
         */
        public char[] makeDisplayName()
        {
                // gchar* gdk_screen_make_display_name (GdkScreen *screen);
                return Str.toString(gdk_screen_make_display_name(gdkScreen) );
        }
        
        /**
         * Returns the number of monitors which screen consists of.
         * screen:
         *  a GdkScreen.
         * Returns:
         *  number of monitors which screen consists of.
         * Since 2.2
         */
        public int getNMonitors()
        {
                // gint gdk_screen_get_n_monitors (GdkScreen *screen);
                return gdk_screen_get_n_monitors(gdkScreen);
        }
        
        /**
         * Retrieves the GdkRectangle representing the size and position of
         * the individual monitor within the entire screen area.
         * Note that the size of the entire screen area can be retrieved via
         * gdk_screen_get_width() and gdk_screen_get_height().
         * screen:
         *  a GdkScreen.
         * monitor_num:
         *  the monitor number.
         * dest:
         *  a GdkRectangle to be filled with the monitor geometry
         * Since 2.2
         */
        public void getMonitorGeometry(int monitorNum, Rectangle dest)
        {
                // void gdk_screen_get_monitor_geometry (GdkScreen *screen,  gint monitor_num,  GdkRectangle *dest);
                gdk_screen_get_monitor_geometry(gdkScreen, monitorNum, (dest is null) ? null : dest.getRectangleStruct());
        }
        
        /**
         * Returns the monitor number in which the point (x,y) is located.
         * screen:
         *  a GdkScreen.
         * x:
         *  the x coordinate in the virtual screen.
         * y:
         *  the y coordinate in the virtual screen.
         * Returns:
         *  the monitor number in which the point (x,y) lies, or
         *  a monitor close to (x,y) if the point is not in any monitor.
         * Since 2.2
         */
        public int getMonitorAtPoint(int x, int y)
        {
                // gint gdk_screen_get_monitor_at_point (GdkScreen *screen,  gint x,  gint y);
                return gdk_screen_get_monitor_at_point(gdkScreen, x, y);
        }
        
        /**
         * Returns the number of the monitor in which the largest area of the
         * bounding rectangle of window resides.
         * screen:
         *  a GdkScreen.
         * window:
         *  a GdkWindow
         * Returns:
         *  the monitor number in which most of window is located,
         *  or if window does not intersect any monitors, a monitor,
         *  close to window.
         * Since 2.2
         */
        public int getMonitorAtWindow(Window window)
        {
                // gint gdk_screen_get_monitor_at_window  (GdkScreen *screen,  GdkWindow *window);
                return gdk_screen_get_monitor_at_window(gdkScreen, (window is null) ? null : window.getWindowStruct());
        }
        
        /**
         * On X11, sends an X ClientMessage event to all toplevel windows on
         * screen.
         * Toplevel windows are determined by checking for the WM_STATE property,
         * as described in the Inter-Client Communication Conventions Manual (ICCCM).
         * If no windows are found with the WM_STATE property set, the message is
         * sent to all children of the root window.
         * On Windows, broadcasts a message registered with the name
         * GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of
         * data is limited to one long, i.e. four bytes.
         * screen:
         *  the GdkScreen where the event will be broadcasted.
         * event:
         *  the GdkEvent.
         * Since 2.2
         */
        public void broadcastClientMessage(Event event)
        {
                // void gdk_screen_broadcast_client_message  (GdkScreen *screen,  GdkEvent *event);
                gdk_screen_broadcast_client_message(gdkScreen, (event is null) ? null : event.getEventStruct());
        }
        
        /**
         * Retrieves a desktop-wide setting such as double-click time
         * for the GdkScreen screen.
         * FIXME needs a list of valid settings here, or a link to
         * more information.
         * screen:
         *  the GdkScreen where the setting is located
         * name:
         *  the name of the setting
         * value:
         *  location to store the value of the setting
         * Returns:
         *  TRUE if the setting existed and a value was stored
         *  in value, FALSE otherwise.
         * Since 2.2
         */
        public int getSetting(char[] name, Value value)
        {
                // gboolean gdk_screen_get_setting (GdkScreen *screen,  const gchar *name,  GValue *value);
                return gdk_screen_get_setting(gdkScreen, Str.toStringz(name), (value is null) ? null : value.getValueStruct());
        }
        
        /**
         * Gets any options previously set with gdk_screen_set_font_options().
         * screen:
         *  a GdkScreen
         * Returns:
         *  the current font options, or NULL if no default
         *  font options have been set.
         * Since 2.10
         */
        public cairo_font_options_t* getFontOptions()
        {
                // const cairo_font_options_t* gdk_screen_get_font_options  (GdkScreen *screen);
                return gdk_screen_get_font_options(gdkScreen);
        }
        
        /**
         * Sets the default font options for the screen. These
         * options will be set on any PangoContext's newly created
         * with gdk_pango_context_get_for_screen(). Changing the
         * default set of font options does not affect contexts that
         * have already been created.
         * screen:
         *  a GdkScreen
         * options:
         *  a cairo_font_options_t, or NULL to unset any
         *  previously set default font options.
         * Since 2.10
         */
        public void setFontOptions(cairo_font_options_t* options)
        {
                // void gdk_screen_set_font_options (GdkScreen *screen,  const cairo_font_options_t *options);
                gdk_screen_set_font_options(gdkScreen, options);
        }
        
        /**
         * Gets the resolution for font handling on the screen; see
         * gdk_screen_set_resolution() for full details.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the current resolution, or -1 if no resolution
         * has been set.
         * Since 2.10
         */
        public double getResolution()
        {
                // gdouble gdk_screen_get_resolution (GdkScreen *screen);
                return gdk_screen_get_resolution(gdkScreen);
        }
        
        /**
         * Sets the resolution for font handling on the screen. This is a
         * scale factor between points specified in a PangoFontDescription
         * and cairo units. The default value is 96, meaning that a 10 point
         * font will be 13 units high. (10 * 96. / 72. = 13.3).
         * screen:
         *  a GdkScreen
         * dpi:
         *  the resolution in "dots per inch". (Physical inches aren't actually
         *  involved; the terminology is conventional.)
         * Since 2.10
         */
        public void setResolution(double dpi)
        {
                // void gdk_screen_set_resolution (GdkScreen *screen,  gdouble dpi);
                gdk_screen_set_resolution(gdkScreen, dpi);
        }
        
        /**
         * Returns the screen's currently active window.
         * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
         * on the root window, as described in the Extended Window
         * Manager Hints. If there is no currently currently active
         * window, or the window manager does not support the
         * _NET_ACTIVE_WINDOW hint, this function returns NULL.
         * On other platforms, this function may return NULL, depending on whether
         * it is implementable on that platform.
         * The returned window should be unrefed using g_object_unref() when
         * no longer needed.
         * screen:
         *  a GdkScreen
         * Returns:
         *  the currently active window, or NULL.
         * Since 2.10
         */
        public Window getActiveWindow()
        {
                // GdkWindow* gdk_screen_get_active_window (GdkScreen *screen);
                return new Window( gdk_screen_get_active_window(gdkScreen) );
        }
        
        /**
         * Returns a GList of GdkWindows representing the current
         * window stack.
         * On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
         * property on the root window, as described in the Extended Window
         * Manager Hints. If the window manager does not support the
         * _NET_CLIENT_LIST_STACKING hint, this function returns NULL.
         * On other platforms, this function may return NULL, depending on whether
         * it is implementable on that platform.
         * The returned list is newly allocated and owns references to the
         * windows it contains, so it should be freed using g_list_free() and
         * its windows unrefed using g_object_unref() when no longer needed.
         * screen:
         *  a GdkScreen
         * Returns:
         *  a list of GdkWindows for the current window stack,
         *  or NULL.
         * Since 2.10
         */
        public ListG getWindowStack()
        {
                // GList* gdk_screen_get_window_stack (GdkScreen *screen);
                return new ListG( gdk_screen_get_window_stack(gdkScreen) );
        }
        
        /**
         * Like g_spawn_async(), except the child process is spawned in such
         * an environment that on calling gdk_display_open() it would be
         * returned a GdkDisplay with screen as the default screen.
         * This is useful for applications which wish to launch an application
         * on a specific screen.
         * screen:
         *  a GdkScreen
         * working_directory:
         *  child's current working directory, or NULL to
         *  inherit parent's
         * argv:
         *  child's argument vector
         * envp:
         *  child's environment, or NULL to inherit parent's
         * flags:
         *  flags from GSpawnFlags
         * child_setup:
         *  function to run in the child just before exec()
         * user_data:
         *  user data for child_setup
         * child_pid:
         *  return location for child process ID, or NULL
         * error:
         *  return location for error
         * Returns:
         *  TRUE on success, FALSE if error is set
         * Since 2.4
         */
        public int gdkSpawnOnScreen(char[] workingDirectory, char** argv, char** envp, GSpawnFlags flags, GSpawnChildSetupFunc childSetup, void* userData, int* childPid, GError** error)
        {
                // gboolean gdk_spawn_on_screen (GdkScreen *screen,  const gchar *working_directory,  gchar **argv,  gchar **envp,  GSpawnFlags flags,  GSpawnChildSetupFunc child_setup,  gpointer user_data,  gint *child_pid,  GError **error);
                return gdk_spawn_on_screen(gdkScreen, Str.toStringz(workingDirectory), argv, envp, flags, childSetup, userData, childPid, error);
        }
        
        /**
         * Like g_spawn_async_with_pipes(), except the child process is
         * spawned in such an environment that on calling gdk_display_open()
         * it would be returned a GdkDisplay with screen as the default
         * screen.
         * This is useful for applications which wish to launch an application
         * on a specific screen.
         * screen:
         *  a GdkScreen
         * working_directory:
         *  child's current working directory, or NULL to
         *  inherit parent's
         * argv:
         *  child's argument vector
         * envp:
         *  child's environment, or NULL to inherit parent's
         * flags:
         *  flags from GSpawnFlags
         * child_setup:
         *  function to run in the child just before exec()
         * user_data:
         *  user data for child_setup
         * child_pid:
         *  return location for child process ID, or NULL
         * standard_input:
         *  return location for file descriptor to write to
         *  child's stdin, or NULL
         * standard_output:
         *  return location for file descriptor to read child's
         *  stdout, or NULL
         * standard_error:
         *  return location for file descriptor to read child's
         *  stderr, or NULL
         * error:
         *  return location for error
         * Returns:
         *  TRUE on success, FALSE if an error was set
         * Since 2.4
         */
        public int gdkSpawnOnScreenWithPipes(char[] workingDirectory, char** argv, char** envp, GSpawnFlags flags, GSpawnChildSetupFunc childSetup, void* userData, int* childPid, int* standardInput, int* standardOutput, int* standardError, GError** error)
        {
                // gboolean gdk_spawn_on_screen_with_pipes (GdkScreen *screen,  const gchar *working_directory,  gchar **argv,  gchar **envp,  GSpawnFlags flags,  GSpawnChildSetupFunc child_setup,  gpointer user_data,  gint *child_pid,  gint *standard_input,  gint *standard_output,  gint *standard_error,  GError **error);
                return gdk_spawn_on_screen_with_pipes(gdkScreen, Str.toStringz(workingDirectory), argv, envp, flags, childSetup, userData, childPid, standardInput, standardOutput, standardError, error);
        }
        
        /**
         * Like g_spawn_command_line_async(), except the child process is
         * spawned in such an environment that on calling gdk_display_open()
         * it would be returned a GdkDisplay with screen as the default
         * screen.
         * This is useful for applications which wish to launch an application
         * on a specific screen.
         * screen:
         *  a GdkScreen
         * command_line:
         *  a command line
         * error:
         *  return location for errors
         * Returns:
         *  TRUE on success, FALSE if error is set.
         * Since 2.4
         * Property Details
         * The "font-options" property
         *  "font-options" gpointer : Read / Write
         * The default font options for the screen.
         */
        public int gdkSpawnCommandLineOnScreen(char[] commandLine, GError** error)
        {
                // gboolean gdk_spawn_command_line_on_screen  (GdkScreen *screen,  const gchar *command_line,  GError **error);
                return gdk_spawn_command_line_on_screen(gdkScreen, Str.toStringz(commandLine), error);
        }
        
        
}