Unreal Engine动态添加Button实例

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UVerticalBox* verticalBox = Cast<UVerticalBox>(CurrentWidget->GetWidgetFromName(TEXT("VerticalBox_0")));

if (verticalBox != nullptr)

{

    UScrollBox* ScrollBox = Cast<UScrollBox>(CurrentWidget->GetWidgetFromName(TEXT("ScrollBox_0")));

}

else {

    UE_LOG(LogTemp, Warning, TEXT("verticalBox is not find"));

}

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UVRVIUButton* Button = NewObject<UVRVIUButton>(this);

UTextBlock* ButtonText = NewObject<UTextBlock>(this);

ButtonText->SetJustification(ETextJustify::Left);

ButtonText->SetColorAndOpacity(FSlateColor(FLinearColor::Black));

ScrollBox->AddChild(Button);

UPanelSlot* Slot = Button->Slot;

if (Slot)

{

    UCanvasPanelSlot* ButtonSlot = Cast<UCanvasPanelSlot>(Slot);

    if (ButtonSlot) {

        ButtonSlot->SetAutoSize(true);

    }

}

//原始Button事件绑定，项目中用到的是自定义Button

//Button->OnClicked.AddDynamic(this, &ALandMasterGameMode::OnButtonClicked1);

//Button->OnClicked.AddDynamic(Button, &UVRVIUButton::HandleButtonClicked);

Button->OnVRVIUButtonClicked.AddDynamic(this, &ALandMasterGameMode::OnButtonClicked);

FString btnText = FString::Printf(TEXT("%s-%s"), *itemHolder->name, *itemHolder->intranet_ip);

ButtonText->SetText(FText::FromString(btnText));

Button->AddChild(ButtonText);

Button->ButtonID = itemHolder->room_id;

Button->AdditionalParameter = itemHolder->intranet_ip;

UButtonSlot* ButtonSlot = Cast<UButtonSlot>(ButtonText->Slot);

if (ButtonSlot) {

    ButtonSlot->SetPadding(FMargin(0.f, ButtonSlot->Padding.Top,0.f, ButtonSlot->Padding.Bottom));

}

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void ALandMasterGameMode::OnButtonClicked(int32 ButtonID,  FString AdditionalParameterr) {

    UE_LOG(LogTemp, Warning, TEXT("On Button Clicked roomId is %d, ipAdress is %s"), ButtonID, *AdditionalParameterr);

    this->IntranetIP = AdditionalParameterr;

    if (nullptr != CurrentWidget)

    {

        //通过代码调用Button点击事件

        UButton* btn = Cast<UButton>(CurrentWidget->GetWidgetFromName(TEXT("ConnectButton")));

        if (btn != nullptr)

        {

            btn->OnClicked.Broadcast();

        }

        else {

            UE_LOG(LogTemp, Warning, TEXT("verticalBox is not find"));

        }

    }

}