Shell32Util.java

/* Copyright (c) 2010 Daniel Doubrovkine, All Rights Reserved
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.  
 */
package com.sun.jna.platform.win32;

import com.sun.jna.Native;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinNT.HRESULT;

/**
 * Shell32 Utility API.
 * @author dblock[at]dblock.org
 */
public abstract class Shell32Util {
	
	/**
	 * Get a special folder path.
	 * @param hwnd
	 *  Parent window.
	 * @param nFolder
	 *  Folder CSLID.
	 * @param dwFlags
	 *  Flags.
	 * @return
	 *  Special folder.
	 */
	public static String getFolderPath(HWND hwnd, int nFolder, DWORD dwFlags) {
    	char[] pszPath = new char[WinDef.MAX_PATH];
    	HRESULT hr = Shell32.INSTANCE.SHGetFolderPath(hwnd, 
    			nFolder, null, dwFlags, 
    			pszPath);
    	if (! hr.equals(W32Errors.S_OK)) {
    		throw new Win32Exception(hr);
    	}
    	return Native.toString(pszPath);
	}
	
	/**
	 * Get a special folder path.
	 * @param nFolder
	 *  Folder CSLID.
	 * @return
	 *  Special folder path.
	 */
	public static String getFolderPath(int nFolder) {
		return getFolderPath(null, nFolder, ShlObj.SHGFP_TYPE_CURRENT);
	}
}