gdk.display_manager

Module for [DisplayManager] class

class DisplayManager DisplayManagerGidBuilder DisplayManagerGidBuilderImpl

Types 3

classDisplayManager : gobject.object.ObjectWrap

A singleton object that offers notification when displays appear or disappear.

You can use [gdk.display_manager.DisplayManager.get] to obtain the [gdk.display_manager.DisplayManager] singleton, but that should be rarely necessary. Typically, initializing GTK opens a display that you can work with without ever accessing the [gdk.display_manager.DisplayManager].

The GDK library can be built with support for multiple backends. The [gdk.display_manager.DisplayManager] object determines which backend is used at runtime.

In the rare case that you need to influence which of the backends is being used, you can use func@Gdk.set_allowed_backends. Note that you need to call this function before initializing GTK.

Backend-specific code

When writing backend-specific code that is supposed to work with multiple GDK backends, you have to consider both compile time and runtime. At compile time, use the GDK_WINDOWING_X11, GDK_WINDOWING_WIN32 macros, etc. to find out which backends are present in the GDK library you are building your application against. At runtime, use type-check macros like GDK_IS_X11_DISPLAY() to find out which backend is in use:

#ifdef GDK_WINDOWING_X11
 if (GDK_IS_X11_DISPLAY (display))
   {
     // make X11-specific calls here
   }
 else
#endif
#ifdef GDK_WINDOWING_MACOS
 if (GDK_IS_MACOS_DISPLAY (display))
   {
     // make Quartz-specific calls here
   }
 else
#endif
 g_error ("Unsupported GDK backend");

Methods
GType _getGType()
GType _gType() @property
DisplayManager self()Returns `this`, for use in `with` statements.
DisplayManagerGidBuilder builder()Get builder for [gdk.display_manager.DisplayManager] Returns: New builder object
gdk.display.Display defaultDisplay() @propertyGet `defaultDisplay` property. Returns: The default display.
void defaultDisplay(gdk.display.Display propval) @propertySet `defaultDisplay` property. Params: propval = The default display.
gdk.display_manager.DisplayManager get()Gets the singleton [gdk.display_manager.DisplayManager] object.
gdk.display.Display getDefaultDisplay()Gets the default [gdk.display.Display]. Returns: a [gdk.display.Display]
gdk.display.Display[] listDisplays()List all currently open displays. Returns: a newly allocated [glib.slist.SList] of [gdk.display.Display] objects
gdk.display.Display openDisplay(string name = null)Opens a display.
void setDefaultDisplay(gdk.display.Display display)Sets display as the default display.
gulong connectDisplayOpened(T)(T callback, Flag!"After" after = No.After) if (isCallable!T && is(ReturnType!T == void) && (Parameters!T.length < 1 || (ParameterStorageClassTuple!T[0] == ParameterStorageClass.none && is(Parameters!T[0] : gdk.display.Display))) && (Parameters!T.length < 2 || (ParameterStorageClassTuple!T[1] == ParameterStorageClass.none && is(Parameters!T[1] : gdk.display_manager.DisplayManager))) && Parameters!T.length < 3)Connect to `DisplayOpened` signal.
Constructors
this(void * ptr, Flag!"Take" take)
classDisplayManagerGidBuilderImpl(T) : gobject.object.ObjectWrapGidBuilderImpl!T
Methods
T defaultDisplay(gdk.display.Display propval)Set `defaultDisplay` property. Params: propval = The default display. Returns: Builder instance for fluent chaining
classDisplayManagerGidBuilder : DisplayManagerGidBuilderImpl!DisplayManagerGidBuilder

Fluent builder for [gdk.display_manager.DisplayManager]

Methods
DisplayManager build()