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**EvilCleric** · 08-18-2020, 02:47 AM

Did you added all the necessary modules in the Build.cs file?

**ShanxTadeu** · 08-18-2020, 10:34 AM

Originally posted by EvilCleric View Post

Did you added all the necessary modules in the Build.cs file?

Yes, I had them in my Build.cs, like explained here https://docs.unrealengine.com/en-US/...tup/index.html.

But the PrivateDependencYModuleNames were commented, God knows why I comment those. That is the cause.

Thanks for your time and support!

**ShanxTadeu** · 08-18-2020, 01:25 PM

Btw, now that this problem is.gone, two new appeared.

First, if the FInputMode is set to FInputModeUIOnly (in the APRJ_UI_TestHUD::HandleMenu()), and the RngWidget is handling the keyboard event through the URngWidget::NativeOnKeyDown(), I have to click once or the viewport or the widget itself to be able to press tab and execute what is inside URngWidget::NativeOnKeyDown() implementation.

Whats is going on here?

Also, besides the fact that the widget layout have been made on a BP parented to the class URngWidget, the GenerateButton (inside the RngWidget.cpp) focus is still on, even after setting the GenerateButton->IsFocusable to false, in the URngWidget::NativeConstruct(). I have to open the BP and manually uncheck the IsFocusable GenerateButton's checkbox; it should receive false when the widget is added to the viewport, but no, doesn't happen.

Do you guys have any ideas why this two issues are happening?

Thanks!

Here is the code:

RngWidget.h

Code:

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "RngWidget.generated.h"

DECLARE_DYNAMIC_DELEGATE(FCustomOnKeyDownSignature);

/**
*
*/
UCLASS()
class PRJ_UI_TEST_API URngWidget : public UUserWidget
{
GENERATED_BODY()

protected:
UPROPERTY(BlueprintReadOnly, meta = (BindWidget))
class UButton* GenerateButton;

UPROPERTY()
FCustomOnKeyDownSignature CustomOnKeyDown;

UPROPERTY(BlueprintReadOnly, meta = (BindWidget))
class UTextBlock* RandomNumberLabel;

UPROPERTY()
class APRJ_UI_TestHUD* TestHUD;

protected:
void GenerateRandom();

UFUNCTION()
void OnGenerateButtonClicked();

virtual void NativeConstruct() override;

virtual FReply NativeOnKeyDown(const FGeometry& InGeometry, const FKeyEvent& InKeyEvent) override;

};

RngWidget.cpp

Code:

// Fill out your copyright notice in the Description page of Project Settings.


#include "RngWidget.h"
#include "Components/TextBlock.h"
#include "Components/Button.h"
#include "Input/Reply.h"
#include "PRJ_UI_TestHUD.h"

void URngWidget::NativeConstruct()
{
Super::NativeConstruct();

GenerateRandom();
bIsFocusable = true;
SetKeyboardFocus();
GenerateButton->IsFocusable = false;
if(ensureMsgf(GenerateButton, TEXT("The GenerateButton is NULL.")) && !GenerateButton->OnClicked.IsBound())
{
GenerateButton->OnClicked.AddDynamic(this, &URngWidget::OnGenerateButtonClicked);
}
if (!CustomOnKeyDown.IsBound())
{
TestHUD = Cast<APRJ_UI_TestHUD>(GetWorld()->GetFirstPlayerController()->GetHUD());
CustomOnKeyDown.BindDynamic(TestHUD, &APRJ_UI_TestHUD::HandleMenu);
}

}

void URngWidget::GenerateRandom()
{
int32 RandomNumber = FMath::RandRange(0, 100);
if (ensureMsgf(RandomNumberLabel, TEXT("The RandomNumberLabel widget is NULL.")))
{
RandomNumberLabel->SetText(FText::AsNumber(RandomNumber));
}

}

void URngWidget::OnGenerateButtonClicked()
{
GenerateRandom();

}

FReply URngWidget::NativeOnKeyDown(const FGeometry& InGeometry, const FKeyEvent& InKeyEvent)
{
Super::NativeOnKeyDown(InGeometry,InKeyEvent);

if(InKeyEvent.GetKey() == EKeys::Tab)
{
UE_LOG(LogTemp, Warning, TEXT("Executing NativeOnKeyDown() event."));
CustomOnKeyDown.Execute();
}

return FReply::Handled();
}

PRJ_UI_TestHUD.h

Code:

// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/HUD.h"
#include "PRJ_UI_TestHUD.generated.h"

class URngWidget;

UCLASS()
class APRJ_UI_TestHUD : public AHUD
{
GENERATED_BODY()

protected:
TSubclassOf<URngWidget> RngWidgetClass;

URngWidget* RngWidget;

bool bIsMenuOpen;

APlayerController* PlayerController;

public:
APRJ_UI_TestHUD();

void BeginPlay() override;

/** Primary draw call for the HUD */
virtual void DrawHUD() override;

UFUNCTION()
void HandleMenu();

private:
/** Crosshair asset pointer */
class UTexture2D* CrosshairTex;

};

PRJ_UI_TestHUD.cpp

Code:

// Copyright Epic Games, Inc. All Rights Reserved.

#include "PRJ_UI_TestHUD.h"
#include "Engine/Canvas.h"
#include "Engine/Texture2D.h"
#include "TextureResource.h"
#include "CanvasItem.h"
#include "UObject/ConstructorHelpers.h"
#include "RngWidget.h"
#include "Kismet/GameplayStatics.h"

APRJ_UI_TestHUD::APRJ_UI_TestHUD()
{
// Set the crosshair texture
static ConstructorHelpers::FObjectFinder<UTexture2D> CrosshairTexObj(TEXT("/Game/FirstPerson/Textures/FirstPersonCrosshair"));
CrosshairTex = CrosshairTexObj.Object;

static ConstructorHelpers::FClassFinder<URngWidget> RngWidgetAsset(TEXT("/Game/FirstPersonCPP/Blueprints/BP_RNG_UI"));
if(ensureMsgf(RngWidgetAsset.Succeeded(), TEXT("The RngWidgetClass extraction failed.")))
{
RngWidgetClass = RngWidgetAsset.Class;
}
bIsMenuOpen = false;

}

void APRJ_UI_TestHUD::BeginPlay()
{
Super::BeginPlay();

if (RngWidgetClass && !RngWidget)
{
RngWidget = CreateWidget<URngWidget>(GetWorld(), RngWidgetClass);
if (RngWidget)
{
RngWidget->AddToViewport();
RngWidget->SetVisibility(ESlateVisibility::Hidden);
PlayerController = UGameplayStatics::GetPlayerController(this, 0);
PlayerController->SetInputMode(FInputModeGameOnly());
PlayerController->bShowMouseCursor = false;
}
}
}

void APRJ_UI_TestHUD::DrawHUD()
{
Super::DrawHUD();

// Draw very simple crosshair

// find center of the Canvas
const FVector2D Center(Canvas->ClipX * 0.5f, Canvas->ClipY * 0.5f);

// offset by half the texture's dimensions so that the center of the texture aligns with the center of the Canvas
const FVector2D CrosshairDrawPosition( (Center.X),
(Center.Y + 20.0f));

// draw the crosshair
FCanvasTileItem TileItem( CrosshairDrawPosition, CrosshairTex->Resource, FLinearColor::White);
TileItem.BlendMode = SE_BLEND_Translucent;
Canvas->DrawItem( TileItem );
}

void APRJ_UI_TestHUD::HandleMenu()
{
UE_LOG(LogTemp, Warning, TEXT("bIsMenuOen is %s."), bIsMenuOpen ? TEXT("true") : TEXT("false"));
if (!bIsMenuOpen)
{
UE_LOG(LogTemp, Warning, TEXT("Chaging input mode to UI only"));
RngWidget->SetVisibility(ESlateVisibility::Visible);
PlayerController->SetInputMode(FInputModeUIOnly());
PlayerController->bShowMouseCursor = true;
}
else
{
UE_LOG(LogTemp, Warning, TEXT("Chaging input mode to Game only"));
RngWidget->SetVisibility(ESlateVisibility::Hidden);
PlayerController->SetInputMode(FInputModeGameOnly());
PlayerController->bShowMouseCursor = false;
}
bIsMenuOpen = !bIsMenuOpen;
UE_LOG(LogTemp, Warning, TEXT("bIsMenuOen is %s."), bIsMenuOpen ? TEXT("true") : TEXT("false"));

}

**ShanxTadeu** · 08-18-2020, 09:13 PM

UPDATE: about the previous question, the solution was pretty easy: I just had to insert SetKeyboardFocus() in the IF statement inside APRJ_UI_TestHUD::HandleMenu(), my bad

But I still don't know why the GenerateButton doesn't have its IsFocusable variable changed in the RgnWidget::NativeConstruct().

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