Convert PrintWindow to BitBlt to capture a screenshot of a specific window

I have a C ++ program to capture a screenshot of a specific window and save it using the following code

 int main()
 {
   GdiplusStartupInput gdiplusStartupInput;
   ULONG_PTR gdiplusToken;
   GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

   RECT rc;
   HWND hwnd = FindWindow(NULL,TEXT("Window Title Here"));
   if(hwnd == NULL)
   {
      cout<<"Can't Find Window";
      return 0;
   }

    GetClientRect(hwnd,&rc);

    HDC hdcscreen = GetDC(NULL);
    HDC hdc = CreateCompatibleDC(hdcscreen);

    HBITMAP hbmp = CreateCompatibleBitmap(hdcscreen,rc.right - rc.left,rc.bottom - rc.top);

    SelectObject(hdc,hbmp);

    PrintWindow(hwnd,hdc,NULL);

    BitmapToJpg(hbmp,rc.right - rc.left,rc.bottom-rc.top); //Function to convert hbmp bitmap to jpg

    DeleteDC(hdc);
    DeleteObject(hbmp);
    ReleaseDC(NULL,hdcscreen);
 }

      

        
        
        
      

    

This code works for many windows, but for some windows it is a black image with the correct width and height. While searching, I found a solution to use BitBlt()

. But I can't figure out how to replace PrintWindow()

with BitBlt()

and output to HBITMAP

. Do you need help