Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

> Unreal Engine API Reference > Runtime > SlateCore > Widgets > SPanel

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SPanel

A Panel arranges its child widgets on the screen.

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Inheritance Hierarchy

FSlateControlledConstruction

TSharedFromThis

SWidget

SPanel

SBox

	SEnableBox
	SIKRetargetAssetBrowser
	SIKRigAssetBrowser
	SLinkedBox
	SSafeZone
	SVisualAttachmentBox

SBoxPanel

SHorizontalBox

SHeader

SVerticalBox

SDragAndDropVerticalBox

SCanvas

SCommonUILayoutPanel

SConstraintCanvas

SDPIScaler

SGridPanel

SMenuAnchor

SComboButton

	SComboBox
	SEnumComboBox
	SPopupErrorText
	SSearchableComboBox
	SSimpleComboButton

SNodePanel

SGraphPanel

SNodePanel::SNode

SGraphNode

SGraphNodeAI

SGraphNodeDefault

SGraphNodeKnot

SGraphNodeK2Base

SAnimationGraphNode

SGraphNodeK2Composite

SGraphNodeK2Default

SGraphNodeK2Event

SGraphNodeK2Var

SGraphNodeResizable

	SGraphNodeComment
	SGraphNodeDocumentation

SSubmixGraphNode

SOverlay

SSynthTooltip

SRadialBox

SResponsiveGridPanel

SScissorRectBox

SScrollBarTrack

SScrollPanel

SSplitter

SSplitter2x2

SThemeColorBlocksBar

STooltipPresenter

SUniformGridPanel

SUniformWrapPanel

SWidgetSwitcher

SCommonAnimatedSwitcher

SWindowTitleBarArea

SWrapBox

References

Module	SlateCore
Header	/Engine/Source/Runtime/SlateCore/Public/Widgets/SPanel.h
Include	#include "Widgets/SPanel.h"

Syntax

class SPanel : public SWidget

Remarks

A Panel arranges its child widgets on the screen.

Each child widget should be stored in a Slot. The Slot describes how the individual child should be arranged with respect to its parent (i.e. the Panel) and its peers Widgets (i.e. the Panel's other children.) For a simple example see StackPanel.

Constructors

	Name	Description
	SPanel()	Hidden default constructor.

Functions

		Name	Description
	void	Construct()	Most panels do not create widgets as part of their implementation, so they do not need to implement a Construct()
	int32	PaintArrangedChildren ( const FPaintArgs& Args, const FArrangedChildren& ArrangedC..., const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawEl..., int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled )	Just like OnPaint, but takes already arranged children. Can be handy for writing custom SPanels.

Overridden from SWidget

	Name	Description
FVector2D	ComputeDesiredSize ( float )	A Panel's desired size in the space required to arrange of its children on the screen while respecting all of the children's desired sizes and any layout-related options specified by the user.
FChildren &#...	GetChildren()	All widgets must provide a way to access their children in a layout-agnostic way.
void	OnArrangeChildren ( const FGeometry& AllottedGeometry, FArrangedChildren& ArrangedChildre... )	Panels arrange their children in a space described by the AllottedGeometry parameter.
int32	OnPaint ( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawEl..., int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled )	The widget should respond by populating the OutDrawElements array with FDrawElements that represent it and any of its children.
void	SetVisibility ( TAttribute< EVisibility > InVisibil... )