Capture Screen on linux and macOs throgh the .net console application.

Question

I want to capture a screen ( taking screenshot) for each second with cross platfom for (windows, Ubuntu ,macOs) . I tried it from google but solution is working in only windows for linux it gives me error like this [ Unhandled exception. System.DllNotFoundException: Unable to load shared library 'user32.dll' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libuser32.dll: cannot open shared object file: No such file or directory
at ScreenTest.PrintScreen.User32.GetDesktopWindow()
at Screentest.Program.Main(String[] args) ]

Now I read a skiasharp docs but not get any solution for capturing a screen . is there any other way to capture a screen on linux and make through .net core console application?

Below is what i tried from google and working in windows properly.Get error after build for ubuntu.

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.IO;
using ScreenTest;
using System.Threading;

namespace ScreenTest
{
public class PrintScreen
{

    public Image CaptureScreen()
    {
        return CaptureWindow(User32.GetDesktopWindow());
    }

    //<param name="handle">

    public Image CaptureWindow(IntPtr handle)
    {
        IntPtr hdcSrc = User32.GetWindowDC(handle);
        User32.RECT windowRect = new User32.RECT();
        User32.GetWindowRect(handle, ref windowRect);
        int width = windowRect.right - windowRect.left;
        int height = windowRect.bottom - windowRect.top;
        IntPtr hdcDest = GDI32.CreateCompatibleDC(hdcSrc);
        IntPtr hBitmap = GDI32.CreateCompatibleBitmap(hdcSrc, width, height);
        IntPtr hOld = GDI32.SelectObject(hdcDest, hBitmap);
        GDI32.BitBlt(hdcDest, 0, 0, width, height, hdcSrc, 0, 0, GDI32.SRCCOPY);
        GDI32.SelectObject(hdcDest, hOld);
        GDI32.DeleteDC(hdcDest);
        User32.ReleaseDC(handle, hdcSrc);
        Image img = Image.FromHbitmap(hBitmap);
        GDI32.DeleteObject(hBitmap);
        return img;
    }   


    public void CaptureWindowToFile(IntPtr handle, string filename, ImageFormat format)
    {
        Image img = CaptureWindow(handle);
        img.Save(filename, format);
    }

    public void CaptureScreenToFile(string filename, ImageFormat format)
    {
        Image img = CaptureScreen();    
        img.Save(filename, format);
    }

    private class GDI32
    {

        public const int SRCCOPY = 0x00CC0020; // BitBlt dwRop parameter

        [DllImport("gdi32.dll")]
        public static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest,
            int nWidth, int nHeight, IntPtr hObjectSource,
            int nXSrc, int nYSrc, int dwRop);
        [DllImport("gdi32.dll")]
        public static extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int nWidth,
            int nHeight);
        [DllImport("gdi32.dll")]
        public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
        [DllImport("gdi32.dll")]
        public static extern bool DeleteDC(IntPtr hDC);
        [DllImport("gdi32.dll")]
        public static extern bool DeleteObject(IntPtr hObject);
        [DllImport("gdi32.dll")]
        public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
    }

    private class User32
    {
        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }

        [DllImport("user32.dll")]
        public static extern IntPtr GetDesktopWindow();
        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowDC(IntPtr hWnd);
        [DllImport("user32.dll")]
        public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowRect(IntPtr hWnd, ref RECT rect);

    }
}

}

namespace Screentest
{
class Program
{
static void Main(string[] args)
{
DirectoryInfo di = new DirectoryInfo(@"D:\30052022");
//DirectoryInfo di = new DirectoryInfo(@"\home\harshil.patel");
if (!di.Exists) { di.Create(); }

        while (true)
        {
            Thread.Sleep(new Random().Next(20, 40) * 1000);
            PrintScreen ps = new PrintScreen();
            ps.CaptureScreenToFile(di + $"\\screenShoot{Guid.NewGuid()}.png", ImageFormat.Png);
        }
    }
}

}