| gtkmm
    3.24.4
    | 
Drawing context for GDK windows. More...
#include <gdkmm/drawingcontext.h>

| Public Member Functions | |
| DrawingContext (DrawingContext&& src) noexcept | |
| DrawingContext& | operator= (DrawingContext&& src) noexcept | 
| ~DrawingContext () noexcept override | |
| GdkDrawingContext* | gobj () | 
| Provides access to the underlying C GObject.  More... | |
| const GdkDrawingContext* | gobj () const | 
| Provides access to the underlying C GObject.  More... | |
| GdkDrawingContext* | gobj_copy () | 
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.  More... | |
| Glib::RefPtr< Window > | get_window () | 
| Retrieves the window that created the drawing context.  More... | |
| Glib::RefPtr< const Window > | get_window () const | 
| Retrieves the window that created the drawing context.  More... | |
| ::Cairo::RefPtr< ::Cairo::Region > | get_clip () const | 
| Retrieves a copy of the clip region used when creating the context.  More... | |
| bool | is_valid () const | 
| Checks whether the given Gdk::DrawingContext is valid.  More... | |
| ::Cairo::RefPtr< ::Cairo::Context > | get_cairo_context () | 
| Retrieves a Cairo context to be used to draw on the Gdk::Window that created the Gdk::DrawingContext.  More... | |
| ::Cairo::RefPtr< const ::Cairo::Context > | get_cairo_context () const | 
| Retrieves a Cairo context to be used to draw on the Gdk::Window that created the Gdk::DrawingContext.  More... | |
| Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Window > > | property_window () const | 
| The Gdk::Window that created the drawing context.  More... | |
|  Public Member Functions inherited from Glib::Object | |
| Object (const Object &)=delete | |
| Object & | operator= (const Object &)=delete | 
| Object (Object &&src) noexcept | |
| Object & | operator= (Object &&src) noexcept | 
| void * | get_data (const QueryQuark &key) | 
| void | set_data (const Quark &key, void *data) | 
| void | set_data (const Quark &key, void *data, DestroyNotify notify) | 
| void | remove_data (const QueryQuark &quark) | 
| void * | steal_data (const QueryQuark &quark) | 
| Glib::RefPtr< Glib::Object > | wrap (GObject *object, bool take_copy=false) | 
|  Public Member Functions inherited from Glib::ObjectBase | |
| ObjectBase (const ObjectBase &)=delete | |
| ObjectBase & | operator= (const ObjectBase &)=delete | 
| void | set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value) | 
| void | get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const | 
| void | set_property (const Glib::ustring &property_name, const PropertyType &value) | 
| void | get_property (const Glib::ustring &property_name, PropertyType &value) const | 
| void | connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void > &slot) | 
| void | connect_property_changed (const Glib::ustring &property_name, sigc::slot< void > &&slot) | 
| sigc::connection | connect_property_changed_with_return (const Glib::ustring &property_name, const sigc::slot< void > &slot) | 
| sigc::connection | connect_property_changed_with_return (const Glib::ustring &property_name, sigc::slot< void > &&slot) | 
| void | freeze_notify () | 
| void | thaw_notify () | 
| virtual void | reference () const | 
| virtual void | unreference () const | 
| GObject * | gobj () | 
| const GObject * | gobj () const | 
| GObject * | gobj_copy () const | 
|  Public Member Functions inherited from sigc::trackable | |
| trackable () noexcept | |
| trackable (const trackable &src) noexcept | |
| trackable (trackable &&src) | |
| ~trackable () | |
| void | add_destroy_notify_callback (void *data, func_destroy_notify func) const | 
| void | notify_callbacks () | 
| trackable & | operator= (const trackable &src) | 
| trackable & | operator= (trackable &&src) | 
| void | remove_destroy_notify_callback (void *data) const | 
| Static Public Member Functions | |
| static GType | get_type () | 
| Get the GType for this class, for use with the underlying GObject type system.  More... | |
| static Glib::RefPtr< DrawingContext > | get_drawing_context_from_cairo_context (const ::Cairo::RefPtr< ::Cairo::Context >& cr) | 
| Retrieves the Gdk::DrawingContext that created the Cairo context cr.  More... | |
| Protected Member Functions | |
| DrawingContext () | |
|  Protected Member Functions inherited from Glib::Object | |
| Object () | |
| Object (const Glib::ConstructParams &construct_params) | |
| Object (GObject *castitem) | |
| ~Object () noexcept override | |
|  Protected Member Functions inherited from Glib::ObjectBase | |
| ObjectBase () | |
| ObjectBase (const char *custom_type_name) | |
| ObjectBase (const std::type_info &custom_type_info) | |
| ObjectBase (ObjectBase &&src) noexcept | |
| ObjectBase & | operator= (ObjectBase &&src) noexcept | 
| virtual | ~ObjectBase () noexcept=0 | 
| void | initialize (GObject *castitem) | 
| void | initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper) | 
| Related Functions | |
| (Note that these are not member functions.) | |
| Glib::RefPtr< Gdk::DrawingContext > | wrap (GdkDrawingContext* object, bool take_copy=false) | 
| A Glib::wrap() method for this object.  More... | |
| Additional Inherited Members | |
|  Public Types inherited from Glib::Object | |
| typedef void(*)(gpointer data | DestroyNotify) | 
|  Public Types inherited from sigc::trackable | |
| typedef internal::func_destroy_notify | func_destroy_notify | 
Drawing context for GDK windows.
Gdk::DrawingContext is an object that represents the current drawing state of a Gdk::Window.
It's possible to use a Gdk::DrawingContext to draw on a Gdk::Window via rendering API like Cairo or OpenGL.
A Gdk::DrawingContext can only be created by calling Gdk::Window::begin_draw_frame() and will be valid until a call to Gdk::Window::end_draw_frame().
| 
 | noexcept | 
| 
 | overridenoexcept | 
| 
 | protected | 
| ::Cairo::RefPtr< ::Cairo::Context> Gdk::DrawingContext::get_cairo_context | ( | ) | 
Retrieves a Cairo context to be used to draw on the Gdk::Window that created the Gdk::DrawingContext.
The returned context is guaranteed to be valid as long as the Gdk::DrawingContext is valid, that is between a call to Gdk::Window::begin_draw_frame() and Gdk::Window::end_draw_frame().
| ::Cairo::RefPtr<const ::Cairo::Context> Gdk::DrawingContext::get_cairo_context | ( | ) | const | 
Retrieves a Cairo context to be used to draw on the Gdk::Window that created the Gdk::DrawingContext.
The returned context is guaranteed to be valid as long as the Gdk::DrawingContext is valid, that is between a call to Gdk::Window::begin_draw_frame() and Gdk::Window::end_draw_frame().
| ::Cairo::RefPtr< ::Cairo::Region> Gdk::DrawingContext::get_clip | ( | ) | const | 
Retrieves a copy of the clip region used when creating the context.
| 
 | static | 
Retrieves the Gdk::DrawingContext that created the Cairo context cr.
| cr | A Cairo context. | 
| 
 | static | 
Get the GType for this class, for use with the underlying GObject type system.
| Glib::RefPtr<Window> Gdk::DrawingContext::get_window | ( | ) | 
| Glib::RefPtr<const Window> Gdk::DrawingContext::get_window | ( | ) | const | 
| 
 | inline | 
Provides access to the underlying C GObject.
| 
 | inline | 
Provides access to the underlying C GObject.
| GdkDrawingContext* Gdk::DrawingContext::gobj_copy | ( | ) | 
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
| bool Gdk::DrawingContext::is_valid | ( | ) | const | 
Checks whether the given Gdk::DrawingContext is valid.
true if the context is valid. | 
 | noexcept | 
| Glib::PropertyProxy_ReadOnly< Glib::RefPtr<Window> > Gdk::DrawingContext::property_window | ( | ) | const | 
The Gdk::Window that created the drawing context.
| 
 | related | 
A Glib::wrap() method for this object.
| object | The C instance. | 
| take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref. | 
 1.8.11
 1.8.11