在Windows中使用C++截取窗口截图的最佳方法是什么？

#include<windows.h>
#include <gdiplus.h>
#include<iostream>

HDC hdcScreen = GetDC(NULL);
HDC hdcWindow = CreateCompatibleDC(hdcScreen);
RECT rcClient;
GetClientRect(hwnd, &rcClient);
HBITMAP hbmScreen = CreateCompatibleBitmap(hdcScreen, rcClient.right, rcClient.bottom);
SelectObject(hdcWindow, hbmScreen);
BitBlt(hdcWindow, 0, 0, rcClient.right, rcClient.bottom, hdcScreen, 0, 0, SRCCOPY);

GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

Gdiplus::Bitmap bmp(hbmScreen, NULL);
CLSID pngClsid;
GetEncoderClsid(L"image/png", &pngClsid);
bmp.Save(L"screenshot.png", &pngClsid, NULL);

GdiplusShutdown(gdiplusToken);