| Irrlicht 3D Engine |

Public Member Functions
irr::gui::IGUIEnvironment Class Reference

GUI Environment. Used as factory and manager of all other GUI elements. More...

`#include <IGUIEnvironment.h>`

Inheritance diagram for irr::gui::IGUIEnvironment:

List of all members.

## Public Member Functions

- virtual IGUIButton * addButton (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, const wchar_t *text=0, const wchar_t *tooltiptext=0)=0
    Adds a button element.
- virtual IGUICheckBox * addCheckBox (bool checked, const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, const wchar_t *text=0)=0
    Adds a checkbox element.
- virtual IGUIColorSelectDialog * addColorSelectDialog (const wchar_t *title=0, bool modal=true, IGUIElement *parent=0, s32 id=-1)=0
    Adds a color select dialog.
- virtual IGUIComboBox * addComboBox (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1)=0
    Adds a combo box to the environment.
- virtual IGUIContextMenu * addContextMenu (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1)=0
    Adds a context menu to the environment.
- virtual IGUIEditBox * addEditBox (const wchar_t *text, const core::rect< s32 > &rectangle, bool border=true, IGUIElement *parent=0, s32 id=-1)=0
    Adds an edit box.
- virtual IGUISpriteBank * addEmptySpriteBank (const io::path &name)=0
    Adds an empty sprite bank to the manager.
- virtual IGUIFileOpenDialog * addFileOpenDialog (const wchar_t *title=0, bool modal=true, IGUIElement *parent=0, s32 id=-1, bool restoreCWD=false, io::path::char_type *startDir=0)=0
    Adds a file open dialog.
- virtual IGUIFont * addFont (const io::path &name, IGUIFont *font)=0
    Adds an externally loaded font to the font list.
- virtual IGUIElement * addGUIElement (const c8 *elementName, IGUIElement *parent=0)=0
    Adds a GUI element by its name.
- virtual IGUIImage * addImage (video::ITexture *image, core::position2d< s32 > pos, bool useAlphaChannel=true, IGUIElement *parent=0, s32 id=-1, const wchar_t *text=0)=0
    Adds an image element.
- virtual IGUIImage * addImage (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, const wchar_t *text=0, bool useAlphaChannel=true)=0
    Adds an image element.
- virtual IGUIInOutFader * addInOutFader (const core::rect< s32 > *rectangle=0, IGUIElement *parent=0, s32 id=-1)=0
    Adds an element for fading in or out.
- virtual IGUIListBox * addListBox (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, bool drawBackground=false)=0
    Adds a list box element.
- virtual IGUIContextMenu * addMenu (IGUIElement *parent=0, s32 id=-1)=0
    Adds a menu to the environment.
- virtual IGUIMeshViewer * addMeshViewer (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, const wchar_t *text=0)=0
    Adds a mesh viewer. Not 100% implemented yet.
- virtual IGUIWindow * addMessageBox (const wchar_t *caption, const wchar_t *text=0, bool modal=true, s32 flags=EMBF_OK, IGUIElement *parent=0, s32 id=-1, video::ITexture *image=0)=0
    Adds a message box.
- virtual IGUIElement * addModalScreen (IGUIElement *parent)=0
    Adds a modal screen.
- virtual IGUIScrollBar * addScrollBar (bool horizontal, const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1)=0
    Adds a scrollbar.
- virtual IGUISpinBox * addSpinBox (const wchar_t *text, const core::rect< s32 > &rectangle, bool border=true, IGUIElement *parent=0, s32 id=-1)=0
    Adds a spin box.
- virtual IGUIStaticText * addStaticText (const wchar_t *text, const core::rect< s32 > &rectangle, bool border=false, bool wordWrap=true, IGUIElement *parent=0, s32 id=-1, bool fillBackground=false)=0
    Adds a static text.
- virtual IGUITab * addTab (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1)=0
    Adds tab to the environment.
- virtual IGUITabControl * addTabControl (const core::rect< s32 > &rectangle, IGUIElement *parent=0, bool fillbackground=false, bool border=true, s32 id=-1)=0
    Adds a tab control to the environment.
- virtual IGUITable * addTable (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, bool drawBackground=false)=0
    Adds a table to the environment.
- virtual IGUIToolBar * addToolBar (IGUIElement *parent=0, s32 id=-1)=0
    Adds a toolbar to the environment.
- virtual IGUITreeView * addTreeView (const core::rect< s32 > &rectangle, IGUIElement *parent=0, s32 id=-1, bool drawBackground=false, bool scrollBarVertical=true, bool scrollBarHorizontal=false)=0
    Adds a tree view element.
- virtual IGUIWindow * addWindow (const core::rect< s32 > &rectangle, bool modal=false, const wchar_t *text=0, IGUIElement *parent=0, s32 id=-1)=0
    Adds an empty window element.
- virtual void clear ()=0
    Removes all elements from the environment.
- virtual IGUIImageList * createImageList (video::ITexture *texture, core::dimension2d< s32 > imageSize, bool useAlphaChannel)=0
    Creates the image list from the given texture.
- virtual IGUISkin * createSkin (EGUI_SKIN_TYPE type)=0
    Creates a new GUI Skin based on a template.
- virtual void deserializeAttributes (io::IAttributes *in, io::SAttributeReadWriteOptions *options=0)=0
    Reads attributes of the gui environment.
- virtual void drawAll ()=0
    Draws all gui elements by traversing the GUI environment starting at the root node.
- virtual IGUIFont * getBuiltInFont () const =0
    Returns the default built-in font.
- virtual IGUIElementFactory * getDefaultGUIElementFactory () const =0
    Get the default element factory which can create all built-in elements.
- virtual io::IFileSystem * getFileSystem () const =0
    Returns the file system.
- virtual IGUIElement * getFocus () const =0
    Returns the element which holds the focus.
- virtual IGUIFont * getFont (const io::path &filename)=0
    Returns pointer to the font with the specified filename.
- virtual IGUIElementFactory * getGUIElementFactory (u32 index) const =0
    Get a gui element factory by index.
- virtual IGUIElement * getHovered () const =0
    Returns the element which was last under the mouse cursor.
- virtual IOSOperator * getOSOperator () const =0
    returns a pointer to the OS operator
- virtual u32 getRegisteredGUIElementFactoryCount () const =0
    Get amount of registered gui element factories.
- virtual IGUIElement * getRootGUIElement ()=0
    Returns the root gui element.
- virtual IGUISkin * getSkin () const =0
    Returns pointer to the current gui skin.
- virtual IGUISpriteBank * getSpriteBank (const io::path &filename)=0
    Returns pointer to the sprite bank with the specified file name.
- virtual video::IVideoDriver * getVideoDriver () const =0
    Returns the current video driver.
- virtual bool hasFocus (IGUIElement *element) const =0
    Returns whether the element has focus.
- virtual bool loadGUI (const io::path &filename, IGUIElement *parent=0)=0
    Loads the gui. Note that the current gui is not cleared before.
- virtual bool loadGUI (io::IReadFile *file, IGUIElement *parent=0)=0
    Loads the gui. Note that the current gui is not cleared before.
- virtual bool postEventFromUser (const SEvent &event)=0
    Posts an input event to the environment.
- virtual void readGUIElement (io::IXMLReader *reader, IGUIElement *node)=0
    reads an element
- virtual void registerGUIElementFactory (IGUIElementFactory *factoryToAdd)=0
    Adds an element factory to the gui environment.
- virtual bool removeFocus (IGUIElement *element)=0
    Removes the focus from an element.
- virtual void removeFont (IGUIFont *font)=0
    remove loaded font
- virtual bool saveGUI (const io::path &filename, IGUIElement *start=0)=0
    Saves the current gui into a file.
- virtual bool saveGUI (io::IWriteFile *file, IGUIElement *start=0)=0
    Saves the current gui into a file.
- virtual void serializeAttributes (io::IAttributes *out, io::SAttributeReadWriteOptions *options=0) const =0
    Writes attributes of the gui environment.
- virtual bool setFocus (IGUIElement *element)=0
    Sets the focus to an element.
- virtual void setSkin (IGUISkin *skin)=0
    Sets a new GUI Skin.
- virtual void setUserEventReceiver (IEventReceiver *evr)=0
    This sets a new event receiver for gui events.
- virtual void writeGUIElement (io::IXMLWriter *writer, IGUIElement *node)=0
    writes an element

## Detailed Description

GUI Environment. Used as factory and manager of all other GUI elements.

This element can create the following events of type EGUI_EVENT_TYPE (which are passed on to focused sub-elements):
  - EGET_ELEMENT_FOCUS_LOST
  - EGET_ELEMENT_FOCUSED
  - EGET_ELEMENT_LEFT
  - EGET_ELEMENT_HOVERED

Definition at line 70 of file IGUIEnvironment.h.

## Member Function Documentation

virtual IGUIButton* irr::gui::IGUIEnvironment::addButton | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | const wchar_t * | text = `0`,
|  | const wchar_t * | tooltiptext = `0`
| ) |  | `[pure virtual]`

Adds a button element.

Parameters:

  rectangle | Rectangle specifying the borders of the button.
  parent | Parent gui element of the button.
  id | Id with which the gui element can be identified.
  text | Text displayed on the button.
  tooltiptext | Text displayed in the tooltip.

Returns:
  Pointer to the created button. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUICheckBox* irr::gui::IGUIEnvironment::addCheckBox | ( | bool | checked,
|  | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | const wchar_t * | text = `0`
| ) |  | `[pure virtual]`

Adds a checkbox element.

Parameters:

  checked | Define the initial state of the check box.
  rectangle | Rectangle specifying the borders of the check box.
  parent | Parent gui element of the check box.
  id | Id to identify the gui element.
  text | Title text of the check box.

Returns:
  Pointer to the created check box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIColorSelectDialog* irr::gui::IGUIEnvironment::addColorSelectDialog | ( | const wchar_t * | title = `0`,
|  | bool | modal = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a color select dialog.

Parameters:

  title | The title of the dialog.
  modal | Defines if the dialog is modal. This means, that all other gui elements which were created before the dialog cannot be used until it is removed.
  parent | The parent of the dialog.
  id | The ID of the dialog.

Returns:
  Pointer to the created file open dialog. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIComboBox* irr::gui::IGUIEnvironment::addComboBox | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a combo box to the environment.

Parameters:

  rectangle | Rectangle specifying the borders of the combo box.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the combo box directly in the environment.
  id | An identifier for the combo box.

Returns:
  Pointer to the created combo box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIContextMenu* irr::gui::IGUIEnvironment::addContextMenu | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a context menu to the environment.

Parameters:

  rectangle | Rectangle specifying the borders of the menu. Note that the menu is resizing itself based on what items you add.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the menu directly in the environment.
  id | An identifier for the menu.

Returns:
  Pointer to the created context menu. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIEditBox* irr::gui::IGUIEnvironment::addEditBox | ( | const wchar_t * | text,
|  | const core::rect< s32 > & | rectangle,
|  | bool | border = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds an edit box.

Supports unicode input from every keyboard around the world, scrolling, copying and pasting (exchanging data with the clipboard directly), maximum character amount, marking, and all shortcuts like ctrl+X, ctrl+V, ctrl+C, shift+Left, shift+Right, Home, End, and so on.

Parameters:

  text | Text to be displayed. Can be altered after creation by setText().
  rectangle | Rectangle specifying the borders of the edit box.
  border | Set to true if the edit box should have a 3d border.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the edit box directly in the environment.
  id | The ID of the element.

Returns:
  Pointer to the created edit box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUISpriteBank* irr::gui::IGUIEnvironment::addEmptySpriteBank | ( | const io::path & | name | ) | `[pure virtual]`

Adds an empty sprite bank to the manager.

Parameters:

  name | Name of the new sprite bank.

Returns:
  Pointer to the sprite bank. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIFileOpenDialog* irr::gui::IGUIEnvironment::addFileOpenDialog | ( | const wchar_t * | title = `0`,
|  | bool | modal = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | bool | restoreCWD = `false`,
|  | io::path::char_type * | startDir = `0`
| ) |  | `[pure virtual]`

Adds a file open dialog.

Parameters:

  title | Text to be displayed as the title of the dialog.
  modal | Defines if the dialog is modal. This means, that all other gui elements which were created before the message box cannot be used until this messagebox is removed.
  parent | Parent gui element of the dialog.
  id | Id to identify the gui element.
  restoreCWD | If set to true, the current workingn directory will be restored after the dialog is closed in some way. Otherwise the working directory will be the one that the file dialog was last showing.
  startDir | Optional path for which the file dialog will be opened.

Returns:
  Pointer to the created file open dialog. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIFont* irr::gui::IGUIEnvironment::addFont | ( | const io::path & | name,
|  | IGUIFont * | font
| ) |  | `[pure virtual]`

Adds an externally loaded font to the font list.

This method allows to attach an already loaded font to the list of existing fonts. The font is grabbed if non-null and adding was successful.

Parameters:

  name | Name the font should be stored as.
  font | Pointer to font to add.

Returns:
  Pointer to the font stored. This can differ from given parameter if the name previously existed.

virtual IGUIElement* irr::gui::IGUIEnvironment::addGUIElement | ( | const c8 * | elementName,
|  | IGUIElement * | parent = `0`
| ) |  | `[pure virtual]`

Adds a GUI element by its name.

Each factory is checked if it can create an element of the given name. The first match will be created.

Parameters:

  elementName | Name of the element to be created.
  parent | Parent of the new element, if not 0.

Returns:
  New GUI element, or 0 if no such element exists.

virtual IGUIImage* irr::gui::IGUIEnvironment::addImage | ( | video::ITexture * | image,
|  | core::position2d< s32 > | pos,
|  | bool | useAlphaChannel = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | const wchar_t * | text = `0`
| ) |  | `[pure virtual]`

Adds an image element.

Parameters:

  image | Image to be displayed.
  pos | Position of the image. The width and height of the image is taken from the image.
  useAlphaChannel | Sets if the image should use the alpha channel of the texture to draw itself.
  parent | Parent gui element of the image.
  id | Id to identify the gui element.
  text | Title text of the image.

Returns:
  Pointer to the created image element. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIImage* irr::gui::IGUIEnvironment::addImage | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | const wchar_t * | text = `0`,
|  | bool | useAlphaChannel = `true`
| ) |  | `[pure virtual]`

Adds an image element.

Use IGUIImage::setImage later to set the image to be displayed.

Parameters:

  rectangle | Rectangle specifying the borders of the image.
  parent | Parent gui element of the image.
  id | Id to identify the gui element.
  text | Title text of the image.
  useAlphaChannel | Sets if the image should use the alpha channel of the texture to draw itself.

Returns:
  Pointer to the created image element. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIInOutFader* irr::gui::IGUIEnvironment::addInOutFader | ( | const core::rect< s32 > * | rectangle = `0`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds an element for fading in or out.

Parameters:

  rectangle | Rectangle specifying the borders of the fader. If the pointer is NULL, the whole screen is used.
  parent | Parent item of the element, e.g. a window.
  id | An identifier for the fader.

Returns:
  Pointer to the created in-out-fader. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIListBox* irr::gui::IGUIEnvironment::addListBox | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | bool | drawBackground = `false`
| ) |  | `[pure virtual]`

Adds a list box element.

Parameters:

  rectangle | Rectangle specifying the borders of the list box.
  parent | Parent gui element of the list box.
  id | Id to identify the gui element.
  drawBackground | Flag whether the background should be drawn.

Returns:
  Pointer to the created list box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIContextMenu* irr::gui::IGUIEnvironment::addMenu | ( | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a menu to the environment.

This is like the menu you can find on top of most windows in modern graphical user interfaces.

Parameters:

  parent | Parent item of the element, e.g. a window. Set it to 0 to place the menu directly in the environment.
  id | An identifier for the menu.

Returns:
  Pointer to the created menu. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIMeshViewer* irr::gui::IGUIEnvironment::addMeshViewer | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | const wchar_t * | text = `0`
| ) |  | `[pure virtual]`

Adds a mesh viewer. Not 100% implemented yet.

Parameters:

  rectangle | Rectangle specifying the borders of the mesh viewer.
  parent | Parent gui element of the mesh viewer.
  id | Id to identify the gui element.
  text | Title text of the mesh viewer.

Returns:
  Pointer to the created mesh viewer. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIWindow* irr::gui::IGUIEnvironment::addMessageBox | ( | const wchar_t * | caption,
|  | const wchar_t * | text = `0`,
|  | bool | modal = `true`,
|  | s32 | flags = `EMBF_OK`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | video::ITexture * | image = `0`
| ) |  | `[pure virtual]`

Adds a message box.

Parameters:

  caption | Text to be displayed the title of the message box.
  text | Text to be displayed in the body of the message box.
  modal | Defines if the dialog is modal. This means, that all other gui elements which were created before the message box cannot be used until this messagebox is removed.
  flags | Flags specifying the layout of the message box. For example to create a message box with an OK and a CANCEL button on it, set this to (EMBF_OK | EMBF_CANCEL).
  parent | Parent gui element of the message box.
  id | Id with which the gui element can be identified.
  image | Optional texture which will be displayed beside the text as an image

Returns:
  Pointer to the created message box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIElement* irr::gui::IGUIEnvironment::addModalScreen | ( | IGUIElement * | parent | ) | `[pure virtual]`

Adds a modal screen.

This control stops its parent's members from being able to receive input until its last child is removed, it then deletes itself.

Parameters:

  parent | Parent gui element of the modal.

Returns:
  Pointer to the created modal. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIScrollBar* irr::gui::IGUIEnvironment::addScrollBar | ( | bool | horizontal,
|  | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a scrollbar.

Parameters:

  horizontal | Specifies if the scroll bar is drawn horizontal or vertical.
  rectangle | Rectangle specifying the borders of the scrollbar.
  parent | Parent gui element of the scroll bar.
  id | Id to identify the gui element.

Returns:
  Pointer to the created scrollbar. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUISpinBox* irr::gui::IGUIEnvironment::addSpinBox | ( | const wchar_t * | text,
|  | const core::rect< s32 > & | rectangle,
|  | bool | border = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a spin box.

An edit box with up and down buttons

Parameters:

  text | Text to be displayed. Can be altered after creation by setText().
  rectangle | Rectangle specifying the borders of the spin box.
  border | Set to true if the spin box should have a 3d border.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the spin box directly in the environment.
  id | The ID of the element.

Returns:
  Pointer to the created spin box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIStaticText* irr::gui::IGUIEnvironment::addStaticText | ( | const wchar_t * | text,
|  | const core::rect< s32 > & | rectangle,
|  | bool | border = `false`,
|  | bool | wordWrap = `true`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | bool | fillBackground = `false`
| ) |  | `[pure virtual]`

Adds a static text.

Parameters:

  text | Text to be displayed. Can be altered after creation by SetText().
  rectangle | Rectangle specifying the borders of the static text
  border | Set to true if the static text should have a 3d border.
  wordWrap | Enable if the text should wrap into multiple lines.
  parent | Parent item of the element, e.g. a window.
  id | The ID of the element.
  fillBackground | Enable if the background shall be filled. Defaults to false.

Returns:
  Pointer to the created static text. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUITab* irr::gui::IGUIEnvironment::addTab | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds tab to the environment.

You can use this element to group other elements. This is not used for creating tabs on tab controls, please use IGUITabControl::addTab() for this instead.

Parameters:

  rectangle | Rectangle specifying the borders of the tab.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the tab directly in the environment.
  id | An identifier for the tab.

Returns:
  Pointer to the created tab. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUITabControl* irr::gui::IGUIEnvironment::addTabControl | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | bool | fillbackground = `false`,
|  | bool | border = `true`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a tab control to the environment.

Parameters:

  rectangle | Rectangle specifying the borders of the tab control.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the tab control directly in the environment.
  fillbackground | Specifies if the background of the tab control should be drawn.
  border | Specifies if a flat 3d border should be drawn. This is usually not necessary unless you place the control directly into the environment without a window as parent.
  id | An identifier for the tab control.

Returns:
  Pointer to the created tab control element. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUITable* irr::gui::IGUIEnvironment::addTable | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | bool | drawBackground = `false`
| ) |  | `[pure virtual]`

Adds a table to the environment.

Parameters:

  rectangle | Rectangle specifying the borders of the table.
  parent | Parent item of the element, e.g. a window. Set it to 0 to place the element directly in the environment.
  id | An identifier for the table.
  drawBackground | Flag whether the background should be drawn.

Returns:
  Pointer to the created table. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIToolBar* irr::gui::IGUIEnvironment::addToolBar | ( | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds a toolbar to the environment.

It is like a menu that is always placed on top of its parent, and contains buttons.

Parameters:

  parent | Parent item of the element, e.g. a window. Set it to 0 to place the tool bar directly in the environment.
  id | An identifier for the tool bar.

Returns:
  Pointer to the created tool bar. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUITreeView* irr::gui::IGUIEnvironment::addTreeView | ( | const core::rect< s32 > & | rectangle,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`,
|  | bool | drawBackground = `false`,
|  | bool | scrollBarVertical = `true`,
|  | bool | scrollBarHorizontal = `false`
| ) |  | `[pure virtual]`

Adds a tree view element.

Parameters:

  rectangle | Position and dimension of list box.
  parent | Parent gui element of the list box.
  id | Id to identify the gui element.
  drawBackground | Flag whether the background should be drawn.
  scrollBarVertical | Flag whether a vertical scrollbar should be used
  scrollBarHorizontal | Flag whether a horizontal scrollbar should be used

Returns:
  Pointer to the created list box. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIWindow* irr::gui::IGUIEnvironment::addWindow | ( | const core::rect< s32 > & | rectangle,
|  | bool | modal = `false`,
|  | const wchar_t * | text = `0`,
|  | IGUIElement * | parent = `0`,
|  | s32 | id = `-1`
| ) |  | `[pure virtual]`

Adds an empty window element.

Parameters:

  rectangle | Rectangle specifying the borders of the window.
  modal | Defines if the dialog is modal. This means, that all other gui elements which were created before the window cannot be used until it is removed.
  text | Text displayed as the window title.
  parent | Parent gui element of the window.
  id | Id with which the gui element can be identified.

Returns:
  Pointer to the created window. Returns 0 if an error occurred. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual void irr::gui::IGUIEnvironment::clear | ( |  | ) | `[pure virtual]`

Removes all elements from the environment.

virtual IGUIImageList* irr::gui::IGUIEnvironment::createImageList | ( | video::ITexture * | texture,
|  | core::dimension2d< s32 > | imageSize,
|  | bool | useAlphaChannel
| ) |  | `[pure virtual]`

Creates the image list from the given texture.

Parameters:

  texture | Texture to split into images
  imageSize | Dimension of each image
  useAlphaChannel | Flag whether alpha channel of the texture should be honored.

Returns:
  Pointer to the font. Returns 0 if the font could not be loaded. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUISkin* irr::gui::IGUIEnvironment::createSkin | ( | EGUI_SKIN_TYPE | type | ) | `[pure virtual]`

Creates a new GUI Skin based on a template.

Use setSkin() to set the created skin.

Parameters:

  type | The type of the new skin.

Returns:
  Pointer to the created skin. If you no longer need it, you should call IGUISkin::drop(). See IReferenceCounted::drop() for more information.

virtual void irr::gui::IGUIEnvironment::deserializeAttributes | ( | io::IAttributes * | in,
|  | io::SAttributeReadWriteOptions * | options = `0`
| ) |  | `[pure virtual]`

Reads attributes of the gui environment.

virtual void irr::gui::IGUIEnvironment::drawAll | ( |  | ) | `[pure virtual]`

Draws all gui elements by traversing the GUI environment starting at the root node.

virtual IGUIFont* irr::gui::IGUIEnvironment::getBuiltInFont | ( |  | ) | const`[pure virtual]`

Returns the default built-in font.

Returns:
  Pointer to the default built-in font. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIElementFactory* irr::gui::IGUIEnvironment::getDefaultGUIElementFactory | ( |  | ) | const`[pure virtual]`

Get the default element factory which can create all built-in elements.

Returns:
  Pointer to the factory. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual io::IFileSystem* irr::gui::IGUIEnvironment::getFileSystem | ( |  | ) | const`[pure virtual]`

Returns the file system.

Returns:
  Pointer to the file system.

virtual IGUIElement* irr::gui::IGUIEnvironment::getFocus | ( |  | ) | const`[pure virtual]`

Returns the element which holds the focus.

Returns:
  Pointer to the element with focus.

virtual IGUIFont* irr::gui::IGUIEnvironment::getFont | ( | const io::path & | filename | ) | `[pure virtual]`

Returns pointer to the font with the specified filename.

Loads the font if it was not loaded before.

Parameters:

  filename | Filename of the Font.

Returns:
  Pointer to the font. Returns 0 if the font could not be loaded. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUIElementFactory* irr::gui::IGUIEnvironment::getGUIElementFactory | ( | u32 | index | ) | const`[pure virtual]`

Get a gui element factory by index.

Parameters:

  index | Index of the factory.

Returns:
  Factory at given index, or 0 if no such factory exists.

virtual IGUIElement* irr::gui::IGUIEnvironment::getHovered | ( |  | ) | const`[pure virtual]`

Returns the element which was last under the mouse cursor.

NOTE: This information is updated _after_ the user-eventreceiver received it's mouse-events. To find the hovered element while catching mouse events you have to use instead: IGUIEnvironment::getRootGUIElement()->getElementFromPoint(mousePos);

Returns:
  Pointer to the element under the mouse.

virtual IOSOperator* irr::gui::IGUIEnvironment::getOSOperator | ( |  | ) | const`[pure virtual]`

returns a pointer to the OS operator

Returns:
  Pointer to the OS operator.

virtual u32 irr::gui::IGUIEnvironment::getRegisteredGUIElementFactoryCount | ( |  | ) | const`[pure virtual]`

Get amount of registered gui element factories.

Returns:
  Amount of registered gui element factories.

virtual IGUIElement* irr::gui::IGUIEnvironment::getRootGUIElement | ( |  | ) | `[pure virtual]`

Returns the root gui element.

This is the first gui element, the (direct or indirect) parent of all other gui elements. It is a valid IGUIElement, with dimensions the same size as the screen.

Returns:
  Pointer to the root element of the GUI. The returned pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual IGUISkin* irr::gui::IGUIEnvironment::getSkin | ( |  | ) | const`[pure virtual]`

Returns pointer to the current gui skin.

Returns:
  Pointer to the GUI skin.

virtual IGUISpriteBank* irr::gui::IGUIEnvironment::getSpriteBank | ( | const io::path & | filename | ) | `[pure virtual]`

Returns pointer to the sprite bank with the specified file name.

Loads the bank if it was not loaded before.

Parameters:

  filename | Filename of the sprite bank's origin.

Returns:
  Pointer to the sprite bank. Returns 0 if it could not be loaded. This pointer should not be dropped. See IReferenceCounted::drop() for more information.

virtual video::IVideoDriver* irr::gui::IGUIEnvironment::getVideoDriver | ( |  | ) | const`[pure virtual]`

Returns the current video driver.

Returns:
  Pointer to the video driver.

virtual bool irr::gui::IGUIEnvironment::hasFocus | ( | IGUIElement * | element | ) | const`[pure virtual]`

Returns whether the element has focus.

Parameters:

  element | Pointer to the element which is tested.

Returns:
  True if the element has focus, else false.

virtual bool irr::gui::IGUIEnvironment::loadGUI | ( | const io::path & | filename,
|  | IGUIElement * | parent = `0`
| ) |  | `[pure virtual]`

Loads the gui. Note that the current gui is not cleared before.

When a parent is set the elements will be added below the parent, the parent itself does not deserialize. When the file contains skin-settings from the gui-environment those are always serialized into the guienvironment independent of the parent setting.

Parameters:

  filename | Name of the file.
  parent | Parent for the loaded GUI, root if 0.

Returns:
  True if loading succeeded, else false.

virtual bool irr::gui::IGUIEnvironment::loadGUI | ( | io::IReadFile * | file,
|  | IGUIElement * | parent = `0`
| ) |  | `[pure virtual]`

Loads the gui. Note that the current gui is not cleared before.

When a parent is set the elements will be added below the parent, the parent itself does not deserialize. When the file contains skin-settings from the gui-environment those are always serialized into the guienvironment independent of the parent setting.

Parameters:

  file | The file to load from.
  parent | Parent for the loaded GUI, root if 0.

Returns:
  True if loading succeeded, else false.

virtual bool irr::gui::IGUIEnvironment::postEventFromUser | ( | const SEvent & | event | ) | `[pure virtual]`

Posts an input event to the environment.

Usually you do not have to use this method, it is used by the engine internally.

Parameters:

  event | The event to post.

Returns:
  True if succeeded, else false.

virtual void irr::gui::IGUIEnvironment::readGUIElement | ( | io::IXMLReader * | reader,
|  | IGUIElement * | node
| ) |  | `[pure virtual]`

reads an element

virtual void irr::gui::IGUIEnvironment::registerGUIElementFactory | ( | IGUIElementFactory * | factoryToAdd | ) | `[pure virtual]`

Adds an element factory to the gui environment.

Use this to extend the gui environment with new element types which it should be able to create automatically, for example when loading data from xml files.

Parameters:

  factoryToAdd | Pointer to new factory.

virtual bool irr::gui::IGUIEnvironment::removeFocus | ( | IGUIElement * | element | ) | `[pure virtual]`

Removes the focus from an element.

Causes a EGET_ELEMENT_FOCUS_LOST event. If the event is absorbed then the focus will not be changed.

Parameters:

  element | Pointer to the element which shall lose the focus.

Returns:
  True on success, false on failure

virtual void irr::gui::IGUIEnvironment::removeFont | ( | IGUIFont * | font | ) | `[pure virtual]`

remove loaded font

virtual bool irr::gui::IGUIEnvironment::saveGUI | ( | const io::path & | filename,
|  | IGUIElement * | start = `0`
| ) |  | `[pure virtual]`

Saves the current gui into a file.

Parameters:

  filename | Name of the file.
  start | The GUIElement to start with. Root if 0.

Returns:
  True if saving succeeded, else false.

virtual bool irr::gui::IGUIEnvironment::saveGUI | ( | io::IWriteFile * | file,
|  | IGUIElement * | start = `0`
| ) |  | `[pure virtual]`

Saves the current gui into a file.

Parameters:

  file | The file to write to.
  start | The GUIElement to start with. Root if 0.

Returns:
  True if saving succeeded, else false.

virtual void irr::gui::IGUIEnvironment::serializeAttributes | ( | io::IAttributes * | out,
|  | io::SAttributeReadWriteOptions * | options = `0`
| ) |  | const`[pure virtual]`

Writes attributes of the gui environment.

virtual bool irr::gui::IGUIEnvironment::setFocus | ( | IGUIElement * | element | ) | `[pure virtual]`

Sets the focus to an element.

Causes a EGET_ELEMENT_FOCUS_LOST event followed by a EGET_ELEMENT_FOCUSED event. If someone absorbed either of the events, then the focus will not be changed.

Parameters:

  element | Pointer to the element which shall get the focus.

Returns:
  True on success, false on failure

virtual void irr::gui::IGUIEnvironment::setSkin | ( | IGUISkin * | skin | ) | `[pure virtual]`

Sets a new GUI Skin.

You can use this to change the appearance of the whole GUI Environment. You can set one of the built-in skins or implement your own class derived from IGUISkin and enable it using this method. To set for example the built-in Windows classic skin, use the following code:

        gui::IGUISkin* newskin = environment->createSkin(gui::EGST_WINDOWS_CLASSIC);
        environment->setSkin(newskin);
        newskin->drop();

Parameters:

  skin | New skin to use.

virtual void irr::gui::IGUIEnvironment::setUserEventReceiver | ( | IEventReceiver * | evr | ) | `[pure virtual]`

This sets a new event receiver for gui events.

Usually you do not have to use this method, it is used by the engine internally.

Parameters:

  evr | Pointer to the new receiver.

virtual void irr::gui::IGUIEnvironment::writeGUIElement | ( | io::IXMLWriter * | writer,
|  | IGUIElement * | node
| ) |  | `[pure virtual]`

writes an element

The documentation for this class was generated from the following file:

- IGUIEnvironment.h