如何在Windows中使用JNA截图？

import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.GDI32;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinGDI;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.WinUser;
import com.sun.jna.ptr.PointerByReference;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class JNAScreenshot {

    public static void main(String[] args) {
        try {
            BufferedImage screenshot = captureScreen();
            ImageIO.write(screenshot, "png", new File("screenshot.png"));
            System.out.println("Screenshot saved as screenshot.png");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static BufferedImage captureScreen() {
        User32 user32 = User32.INSTANCE;
        GDI32 gdi32 = GDI32.INSTANCE;

        WinDef.HWND hwnd = user32.GetDesktopWindow();
        WinDef.HDC hdcWindow = user32.GetDC(hwnd);
        WinDef.HDC hdcMemDC = gdi32.CreateCompatibleDC(hdcWindow);

        WinDef.RECT bounds = new WinDef.RECT();
        user32.GetWindowRect(hwnd, bounds);

        int width = bounds.right - bounds.left;
        int height = bounds.bottom - bounds.top;

        WinDef.HBITMAP hBitmap = gdi32.CreateCompatibleBitmap(hdcWindow, width, height);
        WinNT.HANDLE hOld = gdi32.SelectObject(hdcMemDC, hBitmap);

        gdi32.BitBlt(hdcMemDC, 0, 0, width, height, hdcWindow, 0, 0, WinGDI.SRCCOPY);

        gdi32.SelectObject(hdcMemDC, hOld);
        gdi32.DeleteDC(hdcMemDC);
        user32.ReleaseDC(hwnd, hdcWindow);

        BufferedImage image = getBufferedImageFromBitmap(hBitmap);
        gdi32.DeleteObject(hBitmap);

        return image;
    }

    private static BufferedImage getBufferedImageFromBitmap(WinDef.HBITMAP hBitmap) {
        GDI32 gdi32 = GDI32.INSTANCE;
        WinGDI.BITMAPINFO bmi = new WinGDI.BITMAPINFO();
        bmi.bmiHeader.biSize = new WinDef.DWORD(bmi.bmiHeader.size());
        bmi.bmiHeader.biWidth = 0;
        bmi.bmiHeader.biHeight = 0;
        bmi.bmiHeader.biPlanes = 1;
        bmi.bmiHeader.biBitCount = 32;
        bmi.bmiHeader.biCompression = WinGDI.BI_RGB;

        PointerByReference pBits = new PointerByReference();
        gdi32.GetDIBits(null, hBitmap, 0, 0, null, bmi, WinGDI.DIB_RGB_COLORS);

        bmi.bmiHeader.biHeight = -bmi.bmiHeader.biHeight; // Flip the image vertically

        BufferedImage image = new BufferedImage(bmi.bmiHeader.biWidth, Math.abs(bmi.bmiHeader.biHeight), BufferedImage.TYPE_INT_RGB);
        gdi32.GetDIBits(null, hBitmap, 0, image.getHeight(), image.getRaster().getDataBuffer(), bmi, WinGDI.DIB_RGB_COLORS);

        return image;
    }
}