How Create Event OnResize??? Is Possible?

Development Programming & Scripting UI
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1

Hi, I developer a resource in UMG as Fluid Panel to resize Panels in Dynamic Resolution…

I have already managed to create the functions that resizes the panels to the current resolution of the viewport but I need to perform that same function when the game window is resized … same as the javascript OnResize is there any available event ???

2

Still nothing? This seems like something you could use on a daily basis - like with 3d ui.

3

We Need Viewport Resized Event on BluePrint for ours Game.

4

Get Game User Settings → Bind Event To On Game User Settings UI Needs Update

OnViewportResizeBind
OnViewportResizeBind759×189 35.7 KB

This doesn’t work with Editor Viewport size changes only when using Standalone Game or actually building the project

Maybe this works with editor viewport size changes :

GEngine->GameViewport->Viewport->ViewportResizedEvent.AddUObject(this, &MyObj::MyFunction);
void MyObj::MyFunction(FViewport* ViewPort, uint32 val)
{
}

It’s from this post:

Edit 10.04.2025
I posted c++ code for a function in a BlueuprintFunctionLibrary Plugin that lets you bind a custom event to the FViewport::ViewportResizedEvent

.h

//the delegate you will bind to in Blueprints
DECLARE_DYNAMIC_DELEGATE(FOnMyViewportSizeChange);
//the function you will call to bind
UFUNCTION(BlueprintCallable)
static void BindToViewportResizeEvent(const FOnMyViewportSizeChange& ViewportSizeChanged);

.cpp

void UExposedFunctionsBPLibrary::BindToViewportResizeEvent(const FOnMyViewportSizeChange& ViewportSizeChanged)
{
   FViewport::ViewportResizedEvent.AddUFunction(
       const_cast<FOnMyViewportSizeChange&>(ViewportSizeChanged).GetUObjectRef().Get(), 
       const_cast<FOnMyViewportSizeChange&>(ViewportSizeChanged).GetFunctionName());
}
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