UButton::SetAllowDragDrop
#include "Components/Button.h"
Access: public
Specifiers: UFUNCTIONBlueprintCallable
Description
Enables or disables drag-and-drop detection on the button so it can respond to OnButtonDragDetected and related drag events.
Caveats & Gotchas
- • Drag detection and click detection compete over the same mouse-down gesture — a button with drag-drop enabled needs the user to move the mouse past a threshold before a drag starts, which can subtly change how a fast click feels.
- • The drag/drop delegates this enables (OnButtonDragDetected, OnButtonDragEnter/Leave/Over/Drop) are plain C++ multicast delegates, not BlueprintAssignable — they must be bound from C++, not wired up in the Blueprint graph.
Signature
UFUNCTION(BlueprintCallable, Category="Button")
UMG_API void SetAllowDragDrop(bool bInAllowDragDrop);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| bInAllowDragDrop | bool | Whether this button should participate in drag-and-drop detection. | — |
Return Type
void Example
Enable drag-and-drop on a button C++
MyButton->SetAllowDragDrop(true);See Also
Version History
Introduced in: 5.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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