UKismetInputLibrary::PointerEvent_GetWheelDelta
#include "Kismet/KismetInputLibrary.h"
Access: public
Specifiers: staticBlueprintPure
Description
Returns how far the mouse wheel turned since the last mouse event, positive for scrolling up/forward and negative for down/back.
Caveats & Gotchas
- • Magnitude isn't standardized across devices or platforms — treat it as a relative scroll amount and apply your own scaling rather than assuming a fixed step size.
- • Zero for any pointer event that isn't a wheel/scroll event, so check this in an OnMouseWheel handler rather than a generic move handler.
Signature
static float PointerEvent_GetWheelDelta(const FPointerEvent& Input);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| Input | const FPointerEvent& | The pointer event to read the wheel delta from. | — |
Return Type
float Example
Zoom a camera with the mouse wheel C++
FReply UMyWidget::NativeOnMouseWheel(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
{
const float WheelDelta = UKismetInputLibrary::PointerEvent_GetWheelDelta(InMouseEvent);
ZoomCamera(WheelDelta * ZoomSpeed);
return FReply::Handled();
}Tags
Version History
Introduced in: unknown
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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