UDraggableWindow

#include <DraggableWindowUMG/DraggableWindow.h>

class UDraggableWindow

Defined in DraggableWindow.h:18

Inherits: UUserWidget

Inheritance diagram

---
config:
  class:
    hideEmptyMembersBox: true
---
classDiagram
  class UDraggableWindow["UDraggableWindow"]
  class UUserWidget["UUserWidget"]
  UUserWidget <|-- UDraggableWindow

Collaboration diagram

---
config:
  class:
    hideEmptyMembersBox: true
---
classDiagram
  class UDraggableWindow["UDraggableWindow"]
  class EOperatingSystemWindowStartupState["EOperatingSystemWindowStartupState"]
  UDraggableWindow ..> EOperatingSystemWindowStartupState

Class detail

---
config:
  class:
    hideEmptyMembersBox: true
---
classDiagram
  class UDraggableWindow {
    +UDraggableWindow(const FObjectInitializer &ObjectInitializer
    +SetWindowTitle(const FText &NewTitle)
    +CloseWindow()
    +GetWindowPosition() const TOptional< FVector2D >
    +AddContentWidgetClass(TSubclassOf< class UUserWidget > InWidgetCl
    +AddContentWidget(class UUserWidget *InWidget, const bool bCl
    +ToggleMaximize() bool
    +CenterWindowToScreen()
    +UpdateWindowSize(const FVector2D &InNewSize) bool
    +GetChildWidget(UUserWidget *&OutChildWidget) const bool
    +SetPosition(const FVector2D NewPosition)
    +IsMaximized() const bool
    +CreateDraggableWindow(const UObject *WorldContextObject, TSubclas UDraggableWindow() *
    +CreateDraggableWindowFromWidget(const UObject *WorldContextObject, TSubclas UDraggableWindow() *
    +bEnableDrag : uint8
    +bEnableResizing : uint8
    +bEnableMaximizing : uint8
    +MaximizeTaskbarOffset : float
    +ResizeMinWidth : float
    +ResizeMaxWidth : float
    +ResizeMinHeight : float
    +ResizeMaxHeight : float
    +DragKey : FKey
    +WindowTitleBorderWidget : UBorder *
    +ChildWidgetCanvas : UCanvasPanel *
    +ResizeAreaWidget : UBorder *
    +ParentSlot : UCanvasPanelSlot *
    +ChildWidget : UUserWidget *
    +bIsMaximized : uint8
    +LastMousePosition : FVector2D
    +PreResizeAlignment : FVector2D
    +PreResizeOffset : FVector2D
    +PreDragSize : FVector2D
    +StartSize : FVector2D
    +CurrentZOrder : int32
    +PreFullscreenAnchors : FAnchors
    +PreFullscreenMargin : FMargin
    +StartupState : EOperatingSystemWindowStartupState()
    +NativeConstruct() override
    +NativeOnMouseMove(const FGeometry &InGeometry, const FPointer FReply
    +NativeOnMouseButtonUp(const FGeometry &InGeometry, const FPointer FReply
    +OnCloseWindow()
    +K2_OnCloseWindow()
    +K2_OnSetWindowTitle(const FText &NewWindowTitle)
    +K2_OnContentWidgetAdded(const UUserWidget *AddedUserWidget)
    +K2_OnDragStart(const FPointerEvent &InMouseEvent)
    +K2_OnResizeStart(const FPointerEvent &InMouseEvent)
    +K2_StartMinimized()
    +K2_OnWindowMaximizeToggled()
    +Internal_OnMouseButtonUpEvent()
    +Internal_DetermineNewSize(const FVector2D &InDelta) const FVector2D
    +Internal_OnMouseButtonUp_WindowTitleBorder(FGeometry InGeometry, const FPointerEvent & FEventReply
    +Internal_OnMouseButtonDown_WindowTitleBorder(FGeometry InGeometry, const FPointerEvent & FEventReply
    +Internal_OnMouseButtonDown_ResizeArea(FGeometry InGeometry, const FPointerEvent & FEventReply
    +Internal_AddContentWidget(const bool bClearPrevious)
  }

User widget class that represents a draggable window widget. It allows users to create draggable windows with optional resizing and maximizing features.

Public Methods

Return	Name	Description
	UDraggableWindow
void	SetWindowTitle inline	Sets the title of the window.
void	CloseWindow	Closes the draggable window.
TOptional< FVector2D >	GetWindowPosition const	Get the position of the draggable window.
void	AddContentWidgetClass	Adds a content to this window. A new widget is created from the given class.
void	AddContentWidget	Adds a content to this window.
bool	ToggleMaximize	Maximizes or restores this window.
void	CenterWindowToScreen	Center this window to screen. Will not work if window is maximized.
bool	UpdateWindowSize	Updates the size of the draggable window.
bool	GetChildWidget const	Returns the child widget (if any) of this draggable window. If the Return Value is true, then OutChildWidget will be valid.
void	SetPosition	Set the position of the window to the specified coordinates.
bool	IsMaximized const inline	Returns whether the window is currently maximized.

---

UDraggableWindow

UDraggableWindow(const FObjectInitializer & ObjectInitializer)

Defined in DraggableWindow.h:206

References

• bEnableDrag
• bEnableMaximizing
• bEnableResizing
• bIsMaximized
• CurrentZOrder
• DragKey
• LastMousePosition
• MaximizeTaskbarOffset
• PreDragSize
• PreResizeAlignment
• PreResizeOffset
• ResizeMaxHeight
• ResizeMaxWidth
• ResizeMinHeight
• ResizeMinWidth
• StartSize

---

SetWindowTitle

inline

inline void SetWindowTitle(const FText & NewTitle)

Defined in DraggableWindow.h:286 Sets the title of the window.

Parameters

• NewTitle The new title of the window.

---

CloseWindow

void CloseWindow()

Defined in DraggableWindow.h:300 Closes the draggable window.

This method is used to close the draggable window. It performs the following steps:

1. Calls the K2_OnCloseWindow() function.

2. Calls the OnCloseWindow() function.

3. Clears the children of the ChildWidgetCanvas if it is valid.

4. Removes the draggable window from its parent.

References

• ChildWidgetCanvas
• K2_OnCloseWindow
• OnCloseWindow

---

GetWindowPosition

const

TOptional< FVector2D > GetWindowPosition() const

Defined in DraggableWindow.h:310 Get the position of the draggable window.

This method retrieves the position of the draggable window. It checks if the ParentSlot is valid, and if so, it calls GetPosition() on the ParentSlot to get the window position. If the ParentSlot is not valid, it returns an empty TOptional<FVector2D> object.

Returns

The position of the draggable window, or an empty TOptional<FVector2D> object if the ParentSlot is not valid.

References

• ParentSlot

---

AddContentWidgetClass

void AddContentWidgetClass(TSubclassOf< class UUserWidget > InWidgetClass, const bool bClearPrevious = true)

Defined in DraggableWindow.h:320 Adds a content to this window. A new widget is created from the given class.

@See AddContentWidget().

Parameters

• InWidgetClass [TSubclassOf<class UUserWidget>] Widget class to use as content for this window.

• bClearPrevious [const bool] Should we clear all existing children from Child Widget Canvas? Recommended to keep this on.

References

• AddContentWidget

---

AddContentWidget

void AddContentWidget(class UUserWidget * InWidget, const bool bClearPrevious = true)

Defined in DraggableWindow.h:330 Adds a content to this window.

@See AddContentWidgetClass().

Parameters

• InWidget [class UUserWidget*] Reference to an existing content.

• bClearPrevious [const bool] Should we clear all existing children from Child Widget Canvas? Recommended to keep this on.

Referenced by

• AddContentWidgetClass
• CreateDraggableWindowFromWidget

References

• ChildWidget
• Internal_AddContentWidget

---

ToggleMaximize

bool ToggleMaximize()

Defined in DraggableWindow.h:338 Maximizes or restores this window.

Returns

[bool] True if the window was maximized or restored.

Referenced by

• NativeConstruct
• SetPosition

References

• bEnableMaximizing
• bEnableResizing
• bIsMaximized
• K2_OnWindowMaximizeToggled
• MaximizeTaskbarOffset
• ParentSlot
• PreFullscreenAnchors
• PreFullscreenMargin

---

CenterWindowToScreen

void CenterWindowToScreen()

Defined in DraggableWindow.h:344 Center this window to screen. Will not work if window is maximized.

Referenced by

• NativeConstruct

References

• bIsMaximized
• ParentSlot

---

UpdateWindowSize

bool UpdateWindowSize(const FVector2D & InNewSize)

Defined in DraggableWindow.h:353 Updates the size of the draggable window.

Parameters

• InNewSize [const FVector2D&] New size to change to.

Returns

[bool] True if the size was changed successfully.

Referenced by

• NativeConstruct

References

• ParentSlot

---

GetChildWidget

const

bool GetChildWidget(UUserWidget *& OutChildWidget) const

Defined in DraggableWindow.h:362 Returns the child widget (if any) of this draggable window. If the Return Value is true, then OutChildWidget will be valid.

Parameters

• OutChildWidget [UUserWidget*&] Reference to the child widget created by this window.

Returns

[bool] True if a valid child widget is available.

References

• ChildWidget

---

SetPosition

void SetPosition(const FVector2D NewPosition)

Defined in DraggableWindow.h:373 Set the position of the window to the specified coordinates.

Parameters

• NewPosition The new position of the window as a 2D vector (FVector2D).

Note

If the draggable window has a valid parent slot, the position of the parent slot will also be set to the new position.

Note

If the draggable window is currently maximized, calling this method will toggle the maximize state.

Note

If the draggable window is set to start in the center of the screen, calling this method will disable that behavior.

References

• bIsMaximized
• ParentSlot
• ToggleMaximize

---

IsMaximized

const inline

inline bool IsMaximized() const

Defined in DraggableWindow.h:447 Returns whether the window is currently maximized.

Returns

True if the window is maximized, false otherwise.

Public Static Methods

Return	Name	Description
UDraggableWindow *	CreateDraggableWindow static	public static UDraggableWindow::CreateDraggableWindow Creates a draggable window widget instance from given widget class. You can optionally add a child widget also which will be the content for this window.
UDraggableWindow *	CreateDraggableWindowFromWidget static	public static UDraggableWindow::CreateDraggableWindowFromWidget Creates a draggable window widget instance from given widget class. You can optionally add a child widget also which will be the content for this window.

---

CreateDraggableWindow

static

static UDraggableWindow * CreateDraggableWindow(const UObject * WorldContextObject, TSubclassOf< UDraggableWindow > WindowClass, TSubclassOf< UUserWidget > ChildWidgetClass, const FVector2D StartSize = FVector2D(640.f, 480.f), const FVector2D ResizeWidth = FVector2D(640.f, 480.f), const FVector2D ResizeHeight = FVector2D(0.f, 0.f), const bool bCenterToScreen = true, const bool bCanDrag = true, const bool bCanResize = true, const EOperatingSystemWindowStartupState WindowStartupState = EOperatingSystemWindowStartupState::Default)

Defined in DraggableWindow.h:224 public static UDraggableWindow::CreateDraggableWindow Creates a draggable window widget instance from given widget class. You can optionally add a child widget also which will be the content for this window.

Parameters

• WorldContextObject [const UObject*] World context object.

• WindowClass [TSubclassOf<UDraggableWindow>] Window widget class to create.

• ChildWidgetClass [TSubclassOf<UUserWidget>] [OPTIONAL] Child content class to add to the newly created window widget.

• StartSize [const FVector2D] What size should we start the window.

• ResizeWidth [const FVector2D] Min (X) and Max (Y) width of this window.

• ResizeHeight [const FVector2D] Min (X) and Max (Y) height of this window.

• bCenterToScreen [const bool] Should we center the window to the player screen.

• bCanDrag [const bool] Determines if the window can be dragged.

• bCanResize [const bool] Determines if the window can be resized (You must have a Border widget with Is Variable set to true and variable name set to ResizeAreaWidget).

• WindowStartupState [const EOperatingSystemWindowStartupState] Window state to apply.

Returns

[UDraggableWindow*] Newly created window widget.

References

• CreateDraggableWindowFromWidget
• PRINT_ERR
• StartSize

---

CreateDraggableWindowFromWidget

static

static UDraggableWindow * CreateDraggableWindowFromWidget(const UObject * WorldContextObject, TSubclassOf< UDraggableWindow > WindowClass, UUserWidget * NewChildWidget, const FVector2D StartSize = FVector2D(640.f, 480.f), const FVector2D ResizeWidth = FVector2D(640.f, 480.f), const FVector2D ResizeHeight = FVector2D(0.f, 0.f), const bool bCenterToScreen = true, const bool bCanDrag = true, const bool bCanResize = true, const EOperatingSystemWindowStartupState WindowStartupState = EOperatingSystemWindowStartupState::Default)

Defined in DraggableWindow.h:249 public static UDraggableWindow::CreateDraggableWindowFromWidget Creates a draggable window widget instance from given widget class. You can optionally add a child widget also which will be the content for this window.

Parameters

• WorldContextObject [const UObject*] World context object.

• WindowClass [TSubclassOf<UDraggableWindow>] Window widget class to create.

• NewChildWidget [UUserWidget*] [OPTIONAL] Child content to add to the newly created window widget.

• StartSize [const FVector2D] What size should we start the window.

• ResizeWidth [const FVector2D] Min (X) and Max (Y) width of this window.

• ResizeHeight [const FVector2D] Min (X) and Max (Y) height of this window.

• bCenterToScreen [const bool] Should we center the window to the player screen.

• bCanDrag [const bool] Determines if the window can be dragged.

• bCanResize [const bool] Determines if the window can be resized (You must have a Border widget with Is Variable set to true and variable name set to ResizeAreaWidget).

• WindowStartupState [const EOperatingSystemWindowStartupState] Window state to apply.

Returns

[UDraggableWindow*] Newly created window widget.

Referenced by

• CreateDraggableWindow

References

• AddContentWidget
• bEnableDrag
• bEnableResizing
• PRINT_ERR
• ResizeMaxHeight
• ResizeMaxWidth
• ResizeMinHeight
• ResizeMinWidth
• StartSize
• StartupState

Protected Attributes

Return	Name	Description
uint8	bEnableDrag
uint8	bEnableResizing
uint8	bEnableMaximizing
float	MaximizeTaskbarOffset
float	ResizeMinWidth
float	ResizeMaxWidth
float	ResizeMinHeight
float	ResizeMaxHeight
FKey	DragKey
UBorder *	WindowTitleBorderWidget	A pointer to a UBorder widget that represents the window title border.
UCanvasPanel *	ChildWidgetCanvas	Pointer to a UCanvasPanel object representing the child widget canvas of the draggable window.
UBorder *	ResizeAreaWidget	Represents the resize area widget of the draggable window widget.
UCanvasPanelSlot *	ParentSlot	A canvas panel slot is responsible for defining the layout and positioning of a widget within a canvas panel. The ParentSlot variable is used to access and manipulate the properties of the canvas panel slot associated with the parent widget.
UUserWidget *	ChildWidget	Represents a child widget of a draggable window.
uint8	bIsMaximized	Flag indicating if the draggable window is maximized.
FVector2D	LastMousePosition	The last recorded mouse position.
FVector2D	PreResizeAlignment	A 2D vector that represents the alignment of a draggable window before resizing.
FVector2D	PreResizeOffset	Offset value used for pre-resizing calculations.
FVector2D	PreDragSize	PreDragSize is a variable of type FVector2D. It represents the size of the draggable window before it is dragged.
FVector2D	StartSize	Represents the starting size of the draggable window.
int32	CurrentZOrder	The current Z-order of the window.
FAnchors	PreFullscreenAnchors	The PreFullscreenAnchors variable is of type FAnchors and is used to store the original anchors of a draggable window before it enters fullscreen mode.
FMargin	PreFullscreenMargin	This variable is of type FMargin, which is a struct that represents a rectangle’s margin. It is used to store the top, left, bottom, and right margins of the window before it enters full screen mode.
EOperatingSystemWindowStartupState	StartupState	Enum representing the startup state of an operating system window.

---

bEnableDrag

uint8 bEnableDrag

Defined in DraggableWindow.h:26

Referenced by

• CreateDraggableWindowFromWidget
• Internal_OnMouseButtonDown_WindowTitleBorder
• UDraggableWindow

---

bEnableResizing

uint8 bEnableResizing

Defined in DraggableWindow.h:30

Referenced by

• CreateDraggableWindowFromWidget
• NativeConstruct
• ToggleMaximize
• UDraggableWindow

---

bEnableMaximizing

uint8 bEnableMaximizing

Defined in DraggableWindow.h:34

Referenced by

• ToggleMaximize
• UDraggableWindow

---

MaximizeTaskbarOffset

float MaximizeTaskbarOffset

Defined in DraggableWindow.h:38

Referenced by

• ToggleMaximize
• UDraggableWindow

---

ResizeMinWidth

float ResizeMinWidth

Defined in DraggableWindow.h:42

Referenced by

• CreateDraggableWindowFromWidget
• Internal_DetermineNewSize
• UDraggableWindow

---

ResizeMaxWidth

float ResizeMaxWidth

Defined in DraggableWindow.h:46

Referenced by

• CreateDraggableWindowFromWidget
• Internal_DetermineNewSize
• UDraggableWindow

---

ResizeMinHeight

float ResizeMinHeight

Defined in DraggableWindow.h:50

Referenced by

• CreateDraggableWindowFromWidget
• Internal_DetermineNewSize
• UDraggableWindow

---

ResizeMaxHeight

float ResizeMaxHeight

Defined in DraggableWindow.h:54

Referenced by

• CreateDraggableWindowFromWidget
• Internal_DetermineNewSize
• UDraggableWindow

---

DragKey

FKey DragKey

Defined in DraggableWindow.h:58

Referenced by

• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonDown_WindowTitleBorder
• NativeOnMouseButtonUp
• NativeOnMouseMove
• UDraggableWindow

---

WindowTitleBorderWidget

UBorder * WindowTitleBorderWidget

Defined in DraggableWindow.h:71 A pointer to a UBorder widget that represents the window title border.

This variable is used in the DraggableWindow class to reference the UBorder widget that represents the window title border. The UBorder widget is a visual element that can be customized to display the title of the window and provide a draggable area for the window.

Note

The meta specifiers (BindWidgetOptional) indicate that this widget is optional and can be assigned in the Blueprint. If the widget is not assigned, the pointer will be nullptr.

See also: DraggableWindow

Referenced by

• NativeConstruct

---

ChildWidgetCanvas

UCanvasPanel * ChildWidgetCanvas

Defined in DraggableWindow.h:79 Pointer to a UCanvasPanel object representing the child widget canvas of the draggable window.

Note

The ChildWidgetCanvas is expected to be bound to a UCanvasPanel widget in the Blueprints.

Referenced by

• CloseWindow
• Internal_AddContentWidget

---

ResizeAreaWidget

UBorder * ResizeAreaWidget

Defined in DraggableWindow.h:88 Represents the resize area widget of the draggable window widget.

The resize area widget is used to specify the area where the user can click and drag to resize the window. If this widget is null, resizing will not be enabled for the window.

Referenced by

• NativeConstruct

---

ParentSlot

UCanvasPanelSlot * ParentSlot

Defined in DraggableWindow.h:97 A canvas panel slot is responsible for defining the layout and positioning of a widget within a canvas panel. The ParentSlot variable is used to access and manipulate the properties of the canvas panel slot associated with the parent widget.

Note

This variable is expected to be initialized and assigned a valid value before accessing or using it.

Referenced by

• CenterWindowToScreen
• GetWindowPosition
• Internal_DetermineNewSize
• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonUpEvent
• NativeConstruct
• NativeOnMouseMove
• SetPosition
• ToggleMaximize
• UpdateWindowSize

---

ChildWidget

UUserWidget * ChildWidget

Defined in DraggableWindow.h:106 Represents a child widget of a draggable window.

This variable is of type UUserWidget*. It represents a child widget that can be attached to a draggable window. The child widget will be displayed within the draggable window and can be manipulated along with it.

Referenced by

• AddContentWidget
• GetChildWidget
• Internal_AddContentWidget

---

bIsMaximized

uint8 bIsMaximized

Defined in DraggableWindow.h:126 Flag indicating if the draggable window is maximized.

This flag is used to determine if the draggable window is currently maximized. It is a boolean flag with a width of 1 bit. When the flag is set to true (1), it means that the draggable window is maximized. When the flag is set to false (0), it means that the draggable window is not maximized.

Note

This flag is a transient property, meaning that it is not serialized or persisted. It is only used during runtime.

Note

This flag is read-only from outside the draggable window widget. It can only be modified internally.

Referenced by

• CenterWindowToScreen
• SetPosition
• ToggleMaximize
• UDraggableWindow

---

LastMousePosition

FVector2D LastMousePosition

Defined in DraggableWindow.h:143 The last recorded mouse position.

This variable stores the last known position of the mouse on the screen. It is of type FVector2D, which represents a 2D vector with X and Y coordinates. The X coordinate represents the horizontal position of the mouse, and the Y coordinate represents the vertical position of the mouse.

To access this variable, use the appropriate getter and setter methods provided by the class or structure that contains it. The methods should be named in accordance with the coding conventions and naming conventions followed in the application.

Note

This variable is typically updated by the application’s input handling system, which tracks the mouse movements and updates this variable accordingly.

Referenced by

• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonDown_WindowTitleBorder
• NativeOnMouseMove
• UDraggableWindow

---

PreResizeAlignment

FVector2D PreResizeAlignment

Defined in DraggableWindow.h:150 A 2D vector that represents the alignment of a draggable window before resizing.

This vector stores the alignment of a draggable window before it is resized. It is used to determine the original position of the window before resizing it.

Referenced by

• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonUpEvent
• UDraggableWindow

---

PreResizeOffset

FVector2D PreResizeOffset

Defined in DraggableWindow.h:153 Offset value used for pre-resizing calculations.

Referenced by

• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonUpEvent
• NativeOnMouseMove
• UDraggableWindow

---

PreDragSize

FVector2D PreDragSize

Defined in DraggableWindow.h:160 PreDragSize is a variable of type FVector2D. It represents the size of the draggable window before it is dragged.

PreDragSize is typically updated whenever the size of the draggable window changes, but before it is actually dragged. It is useful for keeping track of the previous size of the window.

Referenced by

• Internal_OnMouseButtonDown_ResizeArea
• Internal_OnMouseButtonUpEvent
• UDraggableWindow

---

StartSize

FVector2D StartSize

Defined in DraggableWindow.h:174 Represents the starting size of the draggable window.

This variable is of type FVector2D, which is a structure that holds a 2D vector. The vector represents the width and height of the window.

The StartSize variable is used to define the initial size of the draggable window when it is created. It determines the width and height of the window before any user interaction or resizing occurs.

See also: CreateDraggableWindowFromWidget

Referenced by

• CreateDraggableWindow
• CreateDraggableWindowFromWidget
• NativeConstruct
• UDraggableWindow

---

CurrentZOrder

int32 CurrentZOrder

Defined in DraggableWindow.h:185 The current Z-order of the window.

The Z-order determines the position of the window relative to other windows in the stacking order. A higher Z-order means the window will be displayed above windows with lower Z-orders.

Note

The Z-order can be positive or negative.

Note

A value of 0 indicates that the window is at the default Z-order.

Referenced by

• UDraggableWindow

---

PreFullscreenAnchors

FAnchors PreFullscreenAnchors

Defined in DraggableWindow.h:188 The PreFullscreenAnchors variable is of type FAnchors and is used to store the original anchors of a draggable window before it enters fullscreen mode.

Referenced by

• ToggleMaximize

---

PreFullscreenMargin

FMargin PreFullscreenMargin

Defined in DraggableWindow.h:191 This variable is of type FMargin, which is a struct that represents a rectangle’s margin. It is used to store the top, left, bottom, and right margins of the window before it enters full screen mode.

Referenced by

• ToggleMaximize

---

StartupState

EOperatingSystemWindowStartupState StartupState

Defined in DraggableWindow.h:202 Enum representing the startup state of an operating system window.

The EOperatingSystemWindowStartupState enumeration represents the possible startup states for an operating system window. It is used to define how a window should behave when it is initially displayed.

See also: CreateDraggableWindowFromWidget

Referenced by

• CreateDraggableWindowFromWidget
• NativeConstruct

Protected Methods

Return	Name	Description
void	NativeConstruct virtual override
FReply	NativeOnMouseMove virtual override
FReply	NativeOnMouseButtonUp virtual override
void	OnCloseWindow virtual inline	This virtual function is called when the window is being closed. It can be overridden by derived classes to provide custom behavior when the window is closed.
void	K2_OnCloseWindow	protected UDraggableWindow::K2_OnCloseWindow Event called when this window is closed. C++ implementation calls RemoveFromParent automatically.
void	K2_OnSetWindowTitle	protected UDraggableWindow::K2_OnSetWindowTitle Event called when a new title is set for this window.
void	K2_OnContentWidgetAdded	protected UDraggableWindow::K2_OnContentWidgetAdded Event called when a new content is added to this window.
void	K2_OnDragStart	protected UDraggableWindow::K2_OnDragStart Event called when resizing is started. Only called if Enable Drag is true.
void	K2_OnResizeStart	protected UDraggableWindow::K2_OnResizeStart Event called when resizing is started. Only called if Enable Resizing is true.
void	K2_StartMinimized	protected UDraggableWindow::K2_StartMinimized Event called when the window starts minimized.
void	K2_OnWindowMaximizeToggled	protected UDraggableWindow::K2_OnWindowMaximizeToggled Event called when this window is maximized or restored.

---

NativeConstruct

virtual override

virtual void NativeConstruct() override

Defined in DraggableWindow.h:261

References

• bEnableResizing
• CenterWindowToScreen
• ParentSlot
• PRINT_ERR
• PRINT_LOG
• PRINT_WARN
• ResizeAreaWidget
• StartMaximized
• StartMinimized
• StartSize
• StartupState
• ToggleMaximize
• UpdateWindowSize
• WindowTitleBorderWidget

---

NativeOnMouseMove

virtual override

virtual FReply NativeOnMouseMove(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent) override

Defined in DraggableWindow.h:262

References

• DragKey
• Internal_DetermineNewSize
• Internal_OnMouseButtonUpEvent
• LastMousePosition
• ParentSlot
• PreResizeOffset

---

NativeOnMouseButtonUp

virtual override

virtual FReply NativeOnMouseButtonUp(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent) override

Defined in DraggableWindow.h:263

Referenced by

• Internal_OnMouseButtonUp_WindowTitleBorder

References

• DragKey
• Internal_OnMouseButtonUpEvent

---

OnCloseWindow

virtual inline

virtual inline void OnCloseWindow()

Defined in DraggableWindow.h:385 This virtual function is called when the window is being closed. It can be overridden by derived classes to provide custom behavior when the window is closed.

Referenced by

• CloseWindow

---

K2_OnCloseWindow

void K2_OnCloseWindow()

Defined in DraggableWindow.h:392 protected UDraggableWindow::K2_OnCloseWindow Event called when this window is closed. C++ implementation calls RemoveFromParent automatically.

Referenced by

• CloseWindow

---

K2_OnSetWindowTitle

void K2_OnSetWindowTitle(const FText & NewWindowTitle)

Defined in DraggableWindow.h:400 protected UDraggableWindow::K2_OnSetWindowTitle Event called when a new title is set for this window.

Parameters

• NewWindowTitle [const FText &] New title.

---

K2_OnContentWidgetAdded

void K2_OnContentWidgetAdded(const UUserWidget * AddedUserWidget)

Defined in DraggableWindow.h:408 protected UDraggableWindow::K2_OnContentWidgetAdded Event called when a new content is added to this window.

Parameters

• AddedUserWidget [const UUserWidget*] Reference to the content that is being added.

Referenced by

• Internal_AddContentWidget

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K2_OnDragStart

void K2_OnDragStart(const FPointerEvent & InMouseEvent)

Defined in DraggableWindow.h:416 protected UDraggableWindow::K2_OnDragStart Event called when resizing is started. Only called if Enable Drag is true.

Parameters

• InMouseEvent [const FPointerEvent&] Mouse or touch action.

Referenced by

• Internal_OnMouseButtonDown_WindowTitleBorder

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K2_OnResizeStart

void K2_OnResizeStart(const FPointerEvent & InMouseEvent)

Defined in DraggableWindow.h:424 protected UDraggableWindow::K2_OnResizeStart Event called when resizing is started. Only called if Enable Resizing is true.

Parameters

• InMouseEvent [const FPointerEvent&] Mouse or touch action.

Referenced by

• Internal_OnMouseButtonDown_ResizeArea

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K2_StartMinimized

void K2_StartMinimized()

Defined in DraggableWindow.h:431 protected UDraggableWindow::K2_StartMinimized Event called when the window starts minimized.

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K2_OnWindowMaximizeToggled

void K2_OnWindowMaximizeToggled()

Defined in DraggableWindow.h:438 protected UDraggableWindow::K2_OnWindowMaximizeToggled Event called when this window is maximized or restored.

Referenced by

• ToggleMaximize

Private Methods

Return	Name	Description
void	Internal_OnMouseButtonUpEvent
FVector2D	Internal_DetermineNewSize const
FEventReply	Internal_OnMouseButtonUp_WindowTitleBorder
FEventReply	Internal_OnMouseButtonDown_WindowTitleBorder
FEventReply	Internal_OnMouseButtonDown_ResizeArea
void	Internal_AddContentWidget

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Internal_OnMouseButtonUpEvent

void Internal_OnMouseButtonUpEvent()

Defined in DraggableWindow.h:267

Referenced by

• NativeOnMouseButtonUp
• NativeOnMouseMove

References

• ParentSlot
• PreDragSize
• PreResizeAlignment
• PreResizeOffset

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Internal_DetermineNewSize

const

FVector2D Internal_DetermineNewSize(const FVector2D & InDelta) const

Defined in DraggableWindow.h:268

Referenced by

• NativeOnMouseMove

References

• ParentSlot
• ResizeMaxHeight
• ResizeMaxWidth
• ResizeMinHeight
• ResizeMinWidth

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Internal_OnMouseButtonUp_WindowTitleBorder

FEventReply Internal_OnMouseButtonUp_WindowTitleBorder(FGeometry InGeometry, const FPointerEvent & InMouseEvent)

Defined in DraggableWindow.h:271

Referenced by

• Internal_OnMouseButtonDown_WindowTitleBorder

References

• NativeOnMouseButtonUp

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Internal_OnMouseButtonDown_WindowTitleBorder

FEventReply Internal_OnMouseButtonDown_WindowTitleBorder(FGeometry InGeometry, const FPointerEvent & InMouseEvent)

Defined in DraggableWindow.h:274

References

• bEnableDrag
• DragKey
• Internal_OnMouseButtonUp_WindowTitleBorder
• K2_OnDragStart
• LastMousePosition

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Internal_OnMouseButtonDown_ResizeArea

FEventReply Internal_OnMouseButtonDown_ResizeArea(FGeometry InGeometry, const FPointerEvent & InMouseEvent)

Defined in DraggableWindow.h:277

References

• DragKey
• K2_OnResizeStart
• LastMousePosition
• ParentSlot
• PreDragSize
• PreResizeAlignment
• PreResizeOffset

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Internal_AddContentWidget

void Internal_AddContentWidget(const bool bClearPrevious)

Defined in DraggableWindow.h:377

Referenced by

• AddContentWidget

References

• ChildWidget
• ChildWidgetCanvas
• K2_OnContentWidgetAdded