//  Copyright (c) 2006, Gustavo Franco
//  Email:  gustavo_franco@hotmail.com
//  All rights reserved.

//  Redistribution and use in source and binary forms, with or without modification, 
//  are permitted provided that the following conditions are met:

//  Redistributions of source code must retain the above copyright notice, 
//  this list of conditions and the following disclaimer. 
//  Redistributions in binary form must reproduce the above copyright notice, 
//  this list of conditions and the following disclaimer in the documentation 
//  and/or other materials provided with the distribution. 

//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
//  PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER 
//  REMAINS UNCHANGED.

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace Xwt.Gtk.Windows
{
	[Author ("Franco, Gustavo")]
	public static class Win32
	{
		public const uint SHGFI_ICON = 0x100;
		public const uint SHGFI_LARGEICON = 0x0; // 'Large icon
		public const uint SHGFI_SMALLICON = 0x1; // 'Small icon
		public const uint SHGFI_SHELLICONSIZE = 0x4; // 'Shell icon
		public const uint SHGFI_ICONLOCATION = 0x1000;
		public const uint SHGFI_TYPENAME = 0x400;
		public const uint SHGFI_USEFILEATTRIBUTES = 0x10;
		public const uint FILE_ATTRIBUTES_NORMAL = 0x80;
		internal const string USER32 = "user32.dll";
		internal const string SHELL32 = "shell32.dll";

		#region Delegates
		public delegate bool EnumWindowsCallBack (IntPtr hWnd, int lParam);
		#endregion

		#region USER32
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern IntPtr GetParent (IntPtr hWnd);
		[DllImport (Win32.USER32)]
		public static extern int GetDlgCtrlID (IntPtr hWndCtl);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto, ExactSpelling = true)]
		public static extern int MapWindowPoints (IntPtr hWnd, IntPtr hWndTo, ref POINT pt, int cPoints);
		[DllImport (Win32.USER32, SetLastError = true)]
		public static extern bool GetWindowInfo (IntPtr hwnd, out WINDOWINFO pwi);
		[DllImport (Win32.USER32)]
		public static extern void GetWindowText (IntPtr hWnd, StringBuilder param, int length);
		[DllImport (Win32.USER32)]
		public static extern void GetClassName (IntPtr hWnd, StringBuilder param, int length);
		[DllImport (Win32.USER32)]
		public static extern bool EnumChildWindows (IntPtr hWndParent, EnumWindowsCallBack lpEnumFunc, int lParam);
		[DllImport (Win32.USER32)]
		public static extern bool EnumWindows (EnumWindowsCallBack lpEnumFunc, int lParam);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern bool ReleaseCapture ();
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern IntPtr SetCapture (IntPtr hWnd);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern IntPtr ChildWindowFromPointEx (IntPtr hParent, POINT pt, ChildFromPointFlags flags);
		[DllImport (Win32.USER32, EntryPoint = "FindWindowExA", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi)]
		public static extern IntPtr FindWindowEx (IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
		[DllImport (Win32.USER32)]
		public static extern IntPtr SetParent (IntPtr hWndChild, IntPtr hWndNewParent);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int PostMessage (IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int PostMessage (IntPtr hWnd, int msg, int wParam, int lParam);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int SendMessage (IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int SendMessage (IntPtr hWnd, int msg, int wParam, int lParam);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int SendMessage (IntPtr hWnd, int msg, int wParam, StringBuilder param);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern int SendMessage (IntPtr hWnd, int msg, int wParam, char[] chars);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern IntPtr BeginDeferWindowPos (int nNumWindows);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern IntPtr DeferWindowPos (IntPtr hWinPosInfo, IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, SetWindowPosFlags flags);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern bool EndDeferWindowPos (IntPtr hWinPosInfo);
		[DllImport (Win32.USER32, CharSet = CharSet.Auto)]
		public static extern bool SetWindowPos (IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, SetWindowPosFlags flags);
		[DllImport (Win32.USER32)]
		public static extern bool GetWindowRect (IntPtr hwnd, ref RECT rect);
		[DllImport (Win32.USER32)]
		public static extern bool GetClientRect (IntPtr hwnd, ref RECT rect);
		[DllImport (Win32.USER32)]
		public static extern bool DestroyIcon ([In] IntPtr hIcon);
		[DllImport (Win32.SHELL32, CharSet = CharSet.Unicode)]
		public static extern IntPtr SHGetFileInfoW ([In] string pszPath, uint dwFileAttributes, [In, Out] ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags);
		#endregion
	}

	[AttributeUsage (AttributeTargets.Class |
		AttributeTargets.Enum |
		AttributeTargets.Interface |
		AttributeTargets.Struct,
		AllowMultiple = true)]
	[Author ("Franco, Gustavo")]
	internal class AuthorAttribute : Attribute
	{
		#region Constructors
		public AuthorAttribute (string authorName)
		{
		}
		#endregion
	}
}
