# FThumbImageBuffer (/zh-CN/api-reference/rtc/unreal-blueprint/class-thumbimagebuffer)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

<a id="class_thumbimagebuffer__prototype"></a>

```cpp
USTRUCT(BlueprintType)
struct FThumbImageBuffer {
	GENERATED_BODY()
public:
	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|ThumbImageBuffer")
	UImage* Image = nullptr;
	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|ThumbImageBuffer")
	TArray<uint8> buffer;
	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|ThumbImageBuffer")
	int64 length = 0;
	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|ThumbImageBuffer")
	int64 width = 0;
	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = "Agora|ThumbImageBuffer")
	int64 height = 0;
#if defined(_WIN32) || (defined(__APPLE__) && TARGET_OS_MAC && !TARGET_OS_IPHONE)
	FThumbImageBuffer(){}
	FThumbImageBuffer(const agora::rtc::ThumbImageBuffer & AgoraData){
		length = AgoraData.length;
		buffer.SetNumZeroed(length);
		for (int i = 0; i < length; i++) {
			this->buffer[i] = AgoraData.buffer[i];
		}
		width = AgoraData.width;
		height = AgoraData.height;

		if(Image == nullptr){
			Image = NewObject<UImage>();
		}
		UTexture2D* RenderTexture = UTexture2D::CreateTransient(width, height, PF_R8G8B8A8);
		if(RenderTexture){
#if AG_UE5_OR_LATER
			uint8* RawData = (uint8*)RenderTexture->GetPlatformData()->Mips[0].BulkData.Lock(LOCK_READ_WRITE);
			FMemory::Memcpy(RawData, AgoraData.buffer, width * height * 4);
			RenderTexture->GetPlatformData()->Mips[0].BulkData.Unlock();
			RenderTexture->UpdateResource();
#else
			uint8* RawData = (uint8*)RenderTexture->PlatformData->Mips[0].BulkData.Lock(LOCK_READ_WRITE);
			FMemory::Memcpy(RawData, AgoraData.buffer, width * height * 4);
			RenderTexture->PlatformData->Mips[0].BulkData.Unlock();
			RenderTexture->UpdateResource();
#endif
			FSlateBrush RenderBrush;
			RenderBrush.SetResourceObject(RenderTexture);
			Image->SetBrush(RenderBrush);
		}

	}
	agora::rtc::ThumbImageBuffer CreateAgoraData() const {
		agora::rtc::ThumbImageBuffer AgoraData;
				char* TmpChar = new char[length];
		for (int i = 0; i < length; i++) {
			TmpChar[i] = this->buffer[i];
		}
		AgoraData.buffer = TmpChar;
		AgoraData.length = length;
		AgoraData.width = width;
		AgoraData.height = height;
		return AgoraData;
	}
	void FreeAgoraData(agora::rtc::ThumbImageBuffer & AgoraData) const {
		SET_UABT_GENERIC_PTR___MEMFREE(AgoraData.buffer)
	}
#endif
};
```

<a id="class_thumbimagebuffer__detailed_desc"></a>

### 详情 [#详情]

:::note
注： 图像默认为 ARGB 格式。如果你需要使用其他格式，请自行转换格式。
:::

<a id="class_thumbimagebuffer__parameters"></a>

## 属性 [#属性]

<ParameterList>
<a id="buffer"></a>
<Parameter name="buffer">

缩略图或图标的 buffer。

</Parameter>
<a id="length"></a>
<Parameter name="length">

缩略图或图标的 buffer 长度，单位为字节。

</Parameter>
<a id="width"></a>
<Parameter name="width">

缩略图或图标的实际宽度（px）。

</Parameter>
<a id="height"></a>
<Parameter name="height">

缩略图或图标的实际高度（px）。

</Parameter>
</ParameterList>