DevModeTest.java

package com.company;

import com.sun.jna.Memory;
import com.sun.jna.Native;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.Winspool;

import javax.print.PrintServiceLookup;

/**
 * Winspool2.java:
 *
 *     long DocumentProperties(WinDef.HWND hWnd, HANDLE hPrinter, String pDeviceName, Pointer pDevModeOutput, Pointer pDevModeInput, DWORD fMode);
 */

public class DevModeTest {
    public static void main(String ... args) {
        // Get a printer name from Java to use
        //String printer = PrintServiceLookup.lookupDefaultPrintService().getName();
        String printer = "Microsoft Print to PDF";

        // Get custom Winspool2 instance
        Winspool2 winspool = Winspool2.INSTANCE;

        // Get printer handle from Winspool
        WinNT.HANDLEByReference hPrinter = new WinNT.HANDLEByReference();
        boolean success = winspool.OpenPrinter(printer, hPrinter, null);
        System.out.println("OpenPrinter status: " + success);
        if(getLastError() || !success) {
            System.err.println("Can't open printer, stopping");
            return;
        }

        // Get DEVMODE size
        WinDef.DWORD fMode = new WinDef.DWORD(0); // 0 = size of DEVMODE structure
        long bufferSize = winspool.DocumentProperties(null, hPrinter.getValue(), printer, null, null, fMode);

        if(getLastError() || bufferSize == 0) {
            System.err.println("Problem calling DocumentProperties");
        } else {
            System.out.println("The DEVMODE size must be " + bufferSize);
            fMode = new WinDef.DWORD(2); // 2 = DM_OUT_BUFFER
            Memory devmodeBuffer = new Memory(bufferSize);
            long status = winspool.DocumentProperties(null, hPrinter.getValue(), printer, devmodeBuffer, null, fMode);

            // TODO: This may throw false error
            long IDOK = 1;
            if (getLastError()) {
                System.err.println("Problem calling DocumentProperties");
            }

            if(status == IDOK) {
                System.out.println("The call to DocumentProperties returned IDOK");
            } else {
                // API states a negative value is equivalent to an error
                System.err.println("The call to DocumentProperties returned " + status);
            }
        }

        // Close printer handle
        winspool.INSTANCE.ClosePrinter(hPrinter.getValue());
    }

    private static boolean getLastError() {
        int error = Native.getLastError();
        if(error == 0) {
            System.out.println("  OK");
            return false;
        } else {
            System.out.println("  ERROR: " + error);
        }
        return true;
    }
}