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  3. USelection

USelection

Manages selections of objects.

API > API/Editor > API/Editor/UnrealEd

Inheritance Hierarchy

References

   
Module UnrealEd
Header /Engine/Source/Editor/UnrealEd/Public/Selection.h
Include #include "Selection.h"

Syntax

UCLASS (Transient, MinimalAPI)  
class USelection : public UObject

Remarks

Manages selections of objects. Used in the editor for selecting objects in the various browser windows.

Functions

  Type Name Description
Public function void Call before beginning selection operations
Public function int32

CountSelections ( UClass* ClassToCount,
bool bIgnorePendingKill
)

 Untemplated version of CountSelections.
Public function int32

CountSelections ( bool bIgnorePendingKill
)

 Returns the number of selected objects of the specified type.
Public function Static USelection *

CreateActorSelection ( UObject* InOuter,
FName InName,
EObjectFlags InFlags
)

  
Public function Static USelection *

CreateComponentSelection ( UObject* InOuter,
FName InName,
EObjectFlags InFlags
)

  
Public function Static USelection *

CreateObjectSelection ( UObject* InOuter,
FName InName,
EObjectFlags InFlags
)

  
Public function void

Deselect ( UObject* InObject
)

 Deselects the specified object.
Public function void

DeselectAll ( UClass* InClass
)

 Deselects all objects of the specified class, if no class is specified it deselects all objects.
Public function void

EndBatchSelectOperation ( bool bNotify
)

 Should be called when selection operations are complete.
Public function void If batch selection is active, sets flag indicating something actually changed.
Public function UObject *

GetBottom ( const UClass* InClass
)

 Returns the last selected object of the specified class.
Public function T * Returns the last selected object.
Public function Const UTypedElementSelectionSet * Get the element selection set instance for this selection set, if any.
Public function Const UObject *

GetSelectedObject ( const int32 InIndex
)

  
Public function int32

GetSelectedObjects ( UClass* FilterClass,
TArray< UObject* >& OutSelectedObjects
)

  
Public function int32

GetSelectedObjects ( TArray< TWeakObjectPtr< UObject > >& OutSelectedObjects
)

  
Public function int32

GetSelectedObjects ( TArray< T* >& OutSelectedObjects
)

 Fills in the specified array with all selected objects of the desired type.
Public function UObject *

GetTop ( const UClass* InClass,
const UClass* RequiredInterface,
bool bArchetypesOnly
)

 Returns the first selected object of the specified class.
Public function T *

GetTop ()

 Returns the first selected object.
Public function Const bool  
Public function Const bool

IsClassSelected ( UClass* Class
)

  
Public function Const bool

IsSelected ( const UObject* InObject
)

 Returns true if the specified object is non-NULL and selected.
Public function void Manually invoke a selection changed notification for this set.
Public function Static void Manually invoke a selection changed notification for no specific set. Legacy BSP code only!
Public function Const int32

Num ()

 Returns the number of objects in the selection set.
Public function void

Select ( UObject* InObject
)

 Selects the specified object.
Public function void

Select ( UObject* InObject,
bool bSelect
)

 Selects or deselects the specified object, depending on the value of the bSelect flag.
Public function void Set the element selection set instance for this selection set.
Public function void

ToggleSelect ( UObject* InObject
)

 Toggles the selection state of the specified object.

Overridden from UObject

  Type Name Description
Public function Virtual bool

Modify ( bool bAlwaysMarkDirty
)

 Note that the object will be modified.
Public function Virtual void Handles reading, writing, and reference collecting using FArchive.

Classes

  Type Name Description
Public class FOnSelectionChanged Params: UObject* NewSelection  
Public class FOnSelectionElementSelectionPtrChanged Event fired when the typed element selection set for a selection is changed  

Constants

Name Description
SelectionChangedEvent Called when selection in editor has changed
SelectionElementSelectionPtrChanged Called when the assigned typed element selection pointer set for a selection is changed
SelectNoneEvent Called to deselect everything
SelectObjectEvent Called when an object has been selected (generally an actor)

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