JNADock

package org.bsc.jna;

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.ShellAPI;
import com.sun.jna.platform.win32.ShellAPI.APPBARDATA;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinDef.UINT_PTR;
import com.sun.jna.platform.win32.WinUser;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIFunctionMapper;
import com.sun.jna.win32.W32APITypeMapper;
import java.util.HashMap;
import java.util.Map;
import javax.swing.JFrame;

public class JNADock {

    private HWND hWndGlobal;
    private final String frameTitle = "Dockable frame";

    public interface Shell32 extends StdCallLibrary {

        final static Map<String, Object> WIN32API_OPTIONS = new HashMap<String, Object>() {
            private static final long serialVersionUID = 1L;

            {
                put(Library.OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE);
                put(Library.OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE);
            }
        };

        public Shell32 INSTANCE = (Shell32) Native.loadLibrary("Shell32", Shell32.class, WIN32API_OPTIONS);

        UINT_PTR SHAppBarMessage(DWORD dwMessage, APPBARDATA pData);

    }

    public interface User32 extends StdCallLibrary {

        final static Map<String, Object> WIN32API_OPTIONS = new HashMap<String, Object>() {
            private static final long serialVersionUID = 1L;

            {
                put(Library.OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE);
                put(Library.OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE);
            }
        };

        User32 INSTANCE = (User32) Native.loadLibrary("user32", User32.class, WIN32API_OPTIONS);

        boolean EnumWindows(WinUser.WNDENUMPROC lpEnumFunc, Pointer arg);

        int GetWindowTextA(HWND hWnd, byte[] lpString, int nMaxCount);

        HWND FindWindowA(String winClass, String title);
    }

    public static void main(String[] args) {
        JNADock jna = new JNADock();
    }

    public JNADock() {
        JFrame frame = new JFrame(frameTitle);
        frame.setSize(600, 100);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        newAppBar();
        frame.setLocation(0,0);
    }

    private void newAppBar() {

        final User32 user32 = User32.INSTANCE;

        final String title = "Calculator";

        hWndGlobal = user32.FindWindowA(null, title);

        appbarNew();
        appbarSetPos();
    }

    private void appbarNew() {
        APPBARDATA data = new APPBARDATA.ByReference();
        data.cbSize.setValue(data.size());
        int WM_USER = 0x0400;
        data.hWnd = hWndGlobal;
        data.uCallbackMessage.setValue(WM_USER + 1);

        UINT_PTR result = Shell32.INSTANCE.SHAppBarMessage(new DWORD(ShellAPI.ABM_NEW), data);
         System.out.println("result: " + result);

    }
    private void appbarSetPos() {
        APPBARDATA data = new APPBARDATA.ByReference();
        data.cbSize.setValue(data.size());
        data.uEdge.setValue(ShellAPI.ABE_TOP);

        data.rc.top = 0;
        data.rc.left = 0;
        data.rc.bottom = 100;
        data.rc.right = 600;

        UINT_PTR result = Shell32.INSTANCE.SHAppBarMessage(new DWORD(ShellAPI.ABM_SETPOS), data);
        System.out.println("result: " + result);
    }
}