增加多屏显示，视频播放

SpaceStudioClient/Source/SpaceStudioClient.Target.cs

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+using UnrealBuildTool;
+using System.Collections.Generic;
+
+public class SpaceStudioClientTarget : TargetRules
+{
+	public SpaceStudioClientTarget(TargetInfo Target) : base(Target)
+	{
+		Type = TargetType.Game;
+		DefaultBuildSettings = BuildSettingsVersion.V4;
+
+		ExtraModuleNames.AddRange( new string[] { "SpaceStudioClient" } );
+	}
+}

SpaceStudioClient/Source/SpaceStudioClient/Private/MyActor.cpp

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "MyActor.h"
+
+// Sets default values
+AMyActor::AMyActor()
+{
+ 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
+	PrimaryActorTick.bCanEverTick = true;
+
+}
+
+// Called when the game starts or when spawned
+void AMyActor::BeginPlay()
+{
+	Super::BeginPlay();
+	
+}
+
+// Called every frame
+void AMyActor::Tick(float DeltaTime)
+{
+	Super::Tick(DeltaTime);
+
+}
+

SpaceStudioClient/Source/SpaceStudioClient/Private/MyBlueprintFunctionLibrary.cpp

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+// Fill out your copyright notice in the Description page of Project Settings.
+#include "MyBlueprintFunctionLibrary.h"
+
+#include <windows.h>
+#include <mmdeviceapi.h>
+#include <endpointvolume.h>
+#include <audioclient.h>
+#include <iostream>
+#pragma comment(lib, "ole32.lib")
+
+// 获取当前系统音量
+float _GetSystemVolume() {
+    HRESULT hr;
+    IMMDeviceEnumerator* pEnumerator = NULL;
+    IMMDevice* pDevice = NULL;
+    IAudioEndpointVolume* pEndpointVolume = NULL;
+    float currentVolume = 0.0f;
+
+    // 初始化COM库
+    hr = CoInitialize(NULL);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("COM初始化失败"));
+        return -1.0f;
+    }
+
+    // 创建设备枚举器
+    hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL,
+        __uuidof(IMMDeviceEnumerator), (void**)&pEnumerator);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("创建设备枚举器失败"));
+        CoUninitialize();
+        return -1.0f;
+    }
+
+    // 获取默认音频端点
+    hr = pEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &pDevice);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("获取默认音频端点失败"));
+        pEnumerator->Release();
+        CoUninitialize();
+        return -1.0f;
+    }
+
+    // 激活音频端点音量接口
+    hr = pDevice->Activate(__uuidof(IAudioEndpointVolume), CLSCTX_ALL, NULL, (void**)&pEndpointVolume);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("激活音频端点音量接口失败"));
+        pDevice->Release();
+        pEnumerator->Release();
+        CoUninitialize();
+        return -1.0f;
+    }
+
+    // 获取当前音量
+    hr = pEndpointVolume->GetMasterVolumeLevelScalar(&currentVolume);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("获取音量失败"));
+    }
+
+    // 释放资源
+    pEndpointVolume->Release();
+    pDevice->Release();
+    pEnumerator->Release();
+    CoUninitialize();
+
+    return currentVolume;
+}
+
+// 设置系统音量
+bool _SetSystemVolume(float volume) {
+    HRESULT hr;
+    IMMDeviceEnumerator* pEnumerator = NULL;
+    IMMDevice* pDevice = NULL;
+    IAudioEndpointVolume* pEndpointVolume = NULL;
+
+    // 初始化COM库
+    hr = CoInitialize(NULL);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("COM初始化失败"));
+        return false;
+    }
+
+    // 创建设备枚举器
+    hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL,
+        __uuidof(IMMDeviceEnumerator), (void**)&pEnumerator);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("创建设备枚举器失败"));
+        CoUninitialize();
+        return false;
+    }
+
+    // 获取默认音频端点
+    hr = pEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &pDevice);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("获取默认音频端点失败"));
+        pEnumerator->Release();
+        CoUninitialize();
+        return false;
+    }
+
+    // 激活音频端点音量接口
+    hr = pDevice->Activate(__uuidof(IAudioEndpointVolume), CLSCTX_ALL, NULL, (void**)&pEndpointVolume);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("激活音频端点音量接口失败"));
+        pDevice->Release();
+        pEnumerator->Release();
+        CoUninitialize();
+        return false;
+    }
+
+    // 设置音量
+    hr = pEndpointVolume->SetMasterVolumeLevelScalar(volume, NULL);
+    if (FAILED(hr)) {
+        UE_LOG(LogTemp, Warning, TEXT("设置音量失败"));
+    }
+
+    // 释放资源
+    pEndpointVolume->Release();
+    pDevice->Release();
+    pEnumerator->Release();
+    CoUninitialize();
+
+    return SUCCEEDED(hr);
+}
+bool UMyBlueprintFunctionLibrary::SetSystemVolume(float volume)
+{
+    return _SetSystemVolume(volume);
+}
+
+float UMyBlueprintFunctionLibrary::GetSystemVolume()
+{
+   return _GetSystemVolume();
+}

SpaceStudioClient/Source/SpaceStudioClient/Public/MyActor.h

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "GameFramework/Actor.h"
+#include "MyActor.generated.h"
+
+UCLASS()
+class SPACESTUDIOCLIENT_API AMyActor : public AActor
+{
+	GENERATED_BODY()
+	
+public:	
+	// Sets default values for this actor's properties
+	AMyActor();
+
+protected:
+	// Called when the game starts or when spawned
+	virtual void BeginPlay() override;
+
+public:	
+	// Called every frame
+	virtual void Tick(float DeltaTime) override;
+
+};

SpaceStudioClient/Source/SpaceStudioClient/Public/MyBlueprintFunctionLibrary.h

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Kismet/BlueprintFunctionLibrary.h"
+#include "MyBlueprintFunctionLibrary.generated.h"
+
+/**
+ * 
+ */
+UCLASS()
+class SPACESTUDIOCLIENT_API UMyBlueprintFunctionLibrary : public UBlueprintFunctionLibrary
+{
+	GENERATED_BODY()
+	UFUNCTION(BlueprintCallable, Category = "MyLibrary|Sound", meta = (DisplayName = "set system volume"))
+	static bool SetSystemVolume(float volume);
+
+	UFUNCTION(BlueprintCallable, Category = "MyLibrary|Sound", meta = (DisplayName = "get system volume"))
+	static float GetSystemVolume();
+};

SpaceStudioClient/Source/SpaceStudioClient/SpaceStudioClient.Build.cs

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+using UnrealBuildTool;
+
+public class SpaceStudioClient : ModuleRules
+{
+	public SpaceStudioClient(ReadOnlyTargetRules Target) : base(Target)
+	{
+		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
+	
+		PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore" });
+
+		PrivateDependencyModuleNames.AddRange(new string[] {  });
+
+		// Uncomment if you are using Slate UI
+		// PrivateDependencyModuleNames.AddRange(new string[] { "Slate", "SlateCore" });
+		
+		// Uncomment if you are using online features
+		// PrivateDependencyModuleNames.Add("OnlineSubsystem");
+
+		// To include OnlineSubsystemSteam, add it to the plugins section in your uproject file with the Enabled attribute set to true
+	}
+}

SpaceStudioClient/Source/SpaceStudioClient/SpaceStudioClient.cpp

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+#include "SpaceStudioClient.h"
+#include "Modules/ModuleManager.h"
+
+IMPLEMENT_PRIMARY_GAME_MODULE( FDefaultGameModuleImpl, SpaceStudioClient, "SpaceStudioClient" );

SpaceStudioClient/Source/SpaceStudioClient/SpaceStudioClient.h

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+

SpaceStudioClient/Source/SpaceStudioClientEditor.Target.cs

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+using UnrealBuildTool;
+using System.Collections.Generic;
+
+public class SpaceStudioClientEditorTarget : TargetRules
+{
+	public SpaceStudioClientEditorTarget(TargetInfo Target) : base(Target)
+	{
+		Type = TargetType.Editor;
+		DefaultBuildSettings = BuildSettingsVersion.V4;
+
+		ExtraModuleNames.AddRange( new string[] { "SpaceStudioClient" } );
+	}
+}