FDragDropOperation

A base class for a DragAndDrop operation which supports reflection.

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Inheritance Hierarchy

TSharedFromThis

FDragDropOperation

FBoneDragDropOp

FBrushBuilderDragDropOp

FClassDragDropOp

FColorDragDrop

FDecoratedDragDropOp

FDragAndDropVerticalBoxOp

FExportTextDragDropOp

FExternalDragOperation

FGameDragDropOperation

FUMGDragDropOp

FGraphEditorDragDropAction

FGraphSchemaActionDragDropAction

FControlRigFunctionDragDropAction

FMyBlueprintItemDragDropAction

FKismetVariableDragDropAction

FNiagaraParameterGraphDragOperation

FSequencerObjectBindingDragDropOp

FInViewportUIDragOperation

FSocketDragDropOp

FUICommandDragDropOp

References

Module	SlateCore
Header	/Engine/Source/Runtime/SlateCore/Public/Input/DragAndDrop.h
Include	#include "Input/DragAndDrop.h"

Syntax

class FDragDropOperation : public TSharedFromThis< FDragDropOperation >

Remarks

A base class for a DragAndDrop operation which supports reflection. Drag and Drop is inherently quite stateful. Implementing a custom DragDropOperation allows for dedicated handling of a drag drop operation which keeps a decorator window (optionally) Implement derived types with DRAG_DROP_OPERATOR_TYPE (see below)

Variables

	Name	Description
bool	bCreateNewWindow	Create a new window for the decorator content.
TSharedPtr< SWi...	CursorDecoratorWindow	The window that owns the decorator widget
TOptional< EMou...	MouseCursor	Mouse cursor used by the drag drop operation
TOptional< EMou...	MouseCursorOverride	Mouse cursor used to temporarily replace the drag drops cursor

Constructors

	Name	Description
	FDragDropOperation()	Default constructor.

Destructors

	Name	Description
	~FDragDropOperation()	Destructor.

Functions

	Name	Description
bool	AffectedByPointerEvent ( const FPointerEvent& PointerEvent )	Checks if this drag and drop operation is affected by a given PointerEvent.
void	Construct()	Constructs the window and widget if applicable.
TSharedPtr< ...	ConvertTo ( const FString& TypeId )
void	CreateCursorDecoratorWindow()	Creates a window for the cursor decorator.
void	DestroyCursorDecoratorWindow()	Destroys the cursor decorator window.
FVector2D	GetDecoratorPosition()	Gets the desired position of the decorator in absolute space.
TSharedPtr< ...	GetDefaultDecorator()	Gets the widget that will serve as the decorator unless overridden.
bool	IsExternalOperation()	Is this drag Drop operation going to interact with applications outside of Slate
bool	IsOfType()	Check if this drag and drop operation can cast safely to the specified template type
bool	IsOfTypeImpl ( const FString& Type )	Checks whether this drag and drop operation can cast safely to the specified type.
bool	IsWindowlessOperation()
FCursorReply	OnCursorQuery()	Allows drag/drop operations to override the current cursor
void	OnDragged ( const FDragDropEvent& DragDropEven... )	Called when the mouse was moved during a drag and drop operation
void	OnDrop ( bool bDropWasHandled, const FPointerEvent& MouseEvent )	Invoked when the drag and drop operation has ended.
void	SetCursorOverride ( TOptional< EMouseCursor::Type > Cur... )	Sets the cursor to override the drag drop operations cursor with so that a control can give temporary feedback, for example - a slashed circle telling the user 'this can't be dropped here'.
void	SetDecoratorVisibility ( bool bVisible )	Alters the visibility of the window