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ShellContextMenu.cs
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using System;
using System.Drawing;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
#pragma warning disable CA1051
#pragma warning disable CA1401
#pragma warning disable SA1123
#pragma warning disable SA1310
#pragma warning disable SA1401
#pragma warning disable SA1402
#pragma warning disable SA1513
#pragma warning disable SA1514
#pragma warning disable SA1515
#pragma warning disable SA1617
#pragma warning disable SA1642
#pragma warning disable SA1643
namespace Community.PowerToys.Run.Plugin.Everything.ContextMenu
{
/// <summary>
/// "Stand-alone" shell context menu
///
/// It isn't really debugged but is mostly working.
/// Create an instance and call ShowContextMenu with a list of FileInfo for the files.
/// Limitation is that it only handles files in the same directory but it can be fixed
/// by changing the way files are translated into PIDLs.
///
/// Based on FileBrowser in C# from CodeProject
/// http://www.codeproject.com/useritems/FileBrowser.asp
///
/// Hooking class taken from MSDN Magazine Cutting Edge column
/// http://msdn.microsoft.com/msdnmag/issues/02/10/CuttingEdge/
///
/// Andreas Johansson
/// http://afjohansson.spaces.live.com
///
/// Revised by Victor Yu Chieh Lin for EverythingPowerToys
/// </summary>
/// <example>
/// ShellContextMenu scm = new();
/// FileInfo file = new FileInfo(@"c:\windows\notepad.exe");
/// scm.ShowContextMenu(file, Cursor.Position);
/// </example>
public class ShellContextMenu : NativeWindow
{
#region Constructor
/// <summary>Default constructor</summary>
public ShellContextMenu()
{
CreateHandle(new CreateParams());
}
#endregion
#region Destructor
/// <summary>Ensure all resources get released</summary>
~ShellContextMenu()
{
ReleaseAll();
}
#endregion
#region GetContextMenuInterfaces()
/// <summary>Gets the interfaces to the context menu</summary>
/// <param name="oParentFolder">Parent folder</param>
/// <param name="pild">PIDLs</param>
/// <returns>true if it got the interfaces, otherwise false</returns>
private bool GetContextMenuInterfaces(IShellFolder oParentFolder, nint pild, out nint ctxMenuPtr)
{
var nResult = oParentFolder.GetUIObjectOf(
nint.Zero,
1U,
[pild],
ref iID_IContextMenu,
nint.Zero,
out ctxMenuPtr);
if (nResult == S_OK)
{
_oContextMenu = (IContextMenu)Marshal.GetTypedObjectForIUnknown(ctxMenuPtr, typeof(IContextMenu));
return true;
}
ctxMenuPtr = nint.Zero;
_oContextMenu = null;
return false;
}
#endregion
#region Override
/// <summary>
/// This method receives WindowMessages. It will make the "Open With" and "Send To" work
/// by calling HandleMenuMsg and HandleMenuMsg2. It will also call the OnContextMenuMouseHover
/// method of Browser when hovering over a ContextMenu item.
/// </summary>
/// <param name="m">the Message of the Browser's WndProc</param>
/// <returns>true if the message has been handled, false otherwise</returns>
protected override void WndProc(ref Message m)
{
#region IContextMenu2
if (_oContextMenu2 != null &&
(m.Msg == (int)WM.INITMENUPOPUP ||
m.Msg == (int)WM.MEASUREITEM ||
m.Msg == (int)WM.DRAWITEM))
{
if (_oContextMenu2.HandleMenuMsg(
(uint)m.Msg, m.WParam, m.LParam) == S_OK)
return;
}
#endregion
#region IContextMenu3
if (_oContextMenu3 != null &&
m.Msg == (int)WM.MENUCHAR)
{
if (_oContextMenu3.HandleMenuMsg2(
(uint)m.Msg, m.WParam, m.LParam, nint.Zero) == S_OK)
return;
}
#endregion
base.WndProc(ref m);
}
#endregion
#region InvokeCommand
private void InvokeCommand(IContextMenu oContextMenu, uint nCmd, string strFolder, Point pointInvoke)
{
var invoke = new CMINVOKECOMMANDINFOEX
{
CbSize = CbInvokeCommand,
LpVerb = (nint)(nCmd - CMD_FIRST),
LpDirectory = strFolder,
LpVerbW = (nint)(nCmd - CMD_FIRST),
LpDirectoryW = strFolder,
FMask = CMIC.UNICODE | CMIC.PTINVOKE |
((Control.ModifierKeys & Keys.Control) != 0 ? CMIC.CONTROL_DOWN : 0) |
((Control.ModifierKeys & Keys.Shift) != 0 ? CMIC.SHIFT_DOWN : 0),
PtInvoke = new POINT(pointInvoke.X, pointInvoke.Y),
NShow = SW.SHOWNORMAL,
};
oContextMenu.InvokeCommand(ref invoke);
}
#endregion
#region ReleaseAll()
/// <summary>
/// Release all allocated interfaces, PIDLs
/// </summary>
private void ReleaseAll()
{
if (_oContextMenu != null)
{
Marshal.ReleaseComObject(_oContextMenu);
_oContextMenu = null;
}
if (_oContextMenu2 != null)
{
Marshal.ReleaseComObject(_oContextMenu2);
_oContextMenu2 = null;
}
if (_oContextMenu3 != null)
{
Marshal.ReleaseComObject(_oContextMenu3);
_oContextMenu3 = null;
}
if (_oDesktopFolder != null)
{
Marshal.ReleaseComObject(_oDesktopFolder);
_oDesktopFolder = null;
}
if (_oParentFolder != null)
{
Marshal.ReleaseComObject(_oParentFolder);
_oParentFolder = null;
}
if (_pidl != nint.Zero)
{
FreePIDLs(_pidl);
_pidl = nint.Zero;
}
}
#endregion
#region GetDesktopFolder()
/// <summary>
/// Gets the desktop folder
/// </summary>
/// <returns>IShellFolder for desktop folder</returns>
private IShellFolder GetDesktopFolder()
{
if (_oDesktopFolder == null)
{
// Get desktop IShellFolder
var nResult = SHGetDesktopFolder(out var pUnkownDesktopFolder);
if (nResult != S_OK)
{
throw new ShellContextMenuException("Failed to get the desktop shell folder");
}
_oDesktopFolder = (IShellFolder)Marshal.GetTypedObjectForIUnknown(pUnkownDesktopFolder, typeof(IShellFolder));
}
return _oDesktopFolder;
}
#endregion
#region GetParentFolder()
/// <summary>
/// Gets the parent folder
/// </summary>
/// <param name="folderName">Folder path</param>
/// <returns>IShellFolder for the folder (relative from the desktop)</returns>
private IShellFolder GetParentFolder(string folderName)
{
if (_oParentFolder == null)
{
var oDesktopFolder = GetDesktopFolder();
if (oDesktopFolder == null)
{
return null;
}
// Get the PIDL for the folder file is in
uint pchEaten = 0;
SFGAO pdwAttributes = 0;
var nResult = oDesktopFolder.ParseDisplayName(nint.Zero, nint.Zero, folderName, ref pchEaten, out var pPIDL, ref pdwAttributes);
if (nResult != S_OK)
{
return null;
}
var pStrRet = Marshal.AllocCoTaskMem((MAX_PATH * 2) + 4);
Marshal.WriteInt32(pStrRet, 0, 0);
_ = _oDesktopFolder.GetDisplayNameOf(pPIDL, SHGNO.FORPARSING, pStrRet);
var strFolder = new StringBuilder(MAX_PATH);
_ = StrRetToBuf(pStrRet, pPIDL, strFolder, MAX_PATH);
Marshal.FreeCoTaskMem(pStrRet);
_strParentFolder = strFolder.ToString();
// Get the IShellFolder for folder
nResult = oDesktopFolder.BindToObject(pPIDL, nint.Zero, ref iID_IShellFolder, out var pUnknownParentFolder);
// Free the PIDL first
Marshal.FreeCoTaskMem(pPIDL);
if (nResult != S_OK)
{
return null;
}
_oParentFolder = (IShellFolder)Marshal.GetTypedObjectForIUnknown(pUnknownParentFolder, typeof(IShellFolder));
}
return _oParentFolder;
}
#endregion
#region GetPIDL()
/// <summary>
/// Get the PIDLs
/// </summary>
/// <param name="fi">Array of FileInfo</param>
/// <returns>Array of PIDLs</returns>
protected nint GetPIDL(FileInfo fi)
{
if (fi == null || !fi.Exists)
{
return nint.Zero;
}
var oParentFolder = GetParentFolder(fi.DirectoryName);
if (oParentFolder == null)
{
return nint.Zero;
}
nint pidl = nint.Zero;
// Get the file relative to folder
uint pchEaten = 0;
SFGAO pdwAttributes = 0;
var nResult = oParentFolder.ParseDisplayName(nint.Zero, nint.Zero, fi.Name, ref pchEaten, out nint ppidl, ref pdwAttributes);
if (nResult != S_OK)
{
FreePIDLs(pidl);
return nint.Zero;
}
pidl = ppidl;
return pidl;
}
/// <summary>
/// Get the PIDLs
/// </summary>
/// <param name="di">DirectoryInfo</param>
/// <returns>PIDL</returns>
protected nint GetPIDL(DirectoryInfo di)
{
if (di == null || !di.Exists)
{
return nint.Zero;
}
var oParentFolder = GetParentFolder(di.Parent.FullName);
if (oParentFolder == null)
{
return nint.Zero;
}
nint pidl = nint.Zero;
uint pchEaten = 0;
SFGAO pdwAttributes = 0;
var nResult = oParentFolder.ParseDisplayName(nint.Zero, nint.Zero, di.Name, ref pchEaten, out nint pPIDL, ref pdwAttributes);
if (nResult != S_OK)
{
FreePIDLs(pidl);
return nint.Zero;
}
pidl = pPIDL;
return pidl;
}
#endregion
#region FreePIDLs()
/// <summary>
/// Free the PIDLs
/// </summary>
/// <param name="pidl">PIDL (IntPtr)</param>
protected void FreePIDLs(nint pidl)
{
if (pidl != nint.Zero)
{
Marshal.FreeCoTaskMem(pidl);
pidl = nint.Zero;
}
}
#endregion
#region ShowContextMenu()
/// <summary>
/// Shows the context menu
/// </summary>
/// <param name="file">FileInfos</param>
/// <param name="pointScreen">Where to show the menu</param>
public void ShowContextMenu(FileInfo file, Point pointScreen)
{
// Release all resources first.
ReleaseAll();
_pidl = GetPIDL(file);
ShowContextMenu(pointScreen);
}
/// <summary>
/// Shows the context menu
/// </summary>
/// <param name="dir">DirectoryInfos (should all be in same directory)</param>
/// <param name="pointScreen">Where to show the menu</param>
public void ShowContextMenu(DirectoryInfo dir, Point pointScreen)
{
// Release all resources first.
ReleaseAll();
_pidl = GetPIDL(dir);
ShowContextMenu(pointScreen);
}
/// <summary>
/// Shows the context menu
/// </summary>
/// <param name="pointScreen">Where to show the menu</param>
private void ShowContextMenu(Point pointScreen)
{
nint pMenu = nint.Zero,
iContextMenuPtr = nint.Zero,
iContextMenuPtr2 = nint.Zero,
iContextMenuPtr3 = nint.Zero;
try
{
if (_pidl == nint.Zero)
{
ReleaseAll();
return;
}
if (!GetContextMenuInterfaces(_oParentFolder, _pidl, out iContextMenuPtr))
{
ReleaseAll();
return;
}
pMenu = CreatePopupMenu();
_oContextMenu.QueryContextMenu(
pMenu,
0,
CMD_FIRST,
CMD_LAST,
CMF.EXPLORE | CMF.NORMAL | CMF.EXTENDEDVERBS);
Marshal.QueryInterface(iContextMenuPtr, in iID_IContextMenu2, out iContextMenuPtr2);
Marshal.QueryInterface(iContextMenuPtr, in iID_IContextMenu3, out iContextMenuPtr3);
_oContextMenu2 = (IContextMenu2)Marshal.GetTypedObjectForIUnknown(iContextMenuPtr2, typeof(IContextMenu2));
_oContextMenu3 = (IContextMenu3)Marshal.GetTypedObjectForIUnknown(iContextMenuPtr3, typeof(IContextMenu3));
var nSelected = TrackPopupMenuEx(
pMenu,
TPM.RETURNCMD,
pointScreen.X,
pointScreen.Y,
Handle,
nint.Zero);
DestroyMenu(pMenu);
pMenu = nint.Zero;
if (nSelected != 0)
{
InvokeCommand(_oContextMenu, nSelected, _strParentFolder, pointScreen);
}
}
finally
{
//hook.Uninstall();
if (pMenu != nint.Zero)
{
DestroyMenu(pMenu);
}
if (iContextMenuPtr != nint.Zero)
Marshal.Release(iContextMenuPtr);
if (iContextMenuPtr2 != nint.Zero)
Marshal.Release(iContextMenuPtr2);
if (iContextMenuPtr3 != nint.Zero)
Marshal.Release(iContextMenuPtr3);
ReleaseAll();
}
}
#endregion
#region Local variabled
private IContextMenu _oContextMenu;
private IContextMenu2 _oContextMenu2;
private IContextMenu3 _oContextMenu3;
private IShellFolder _oDesktopFolder;
private IShellFolder _oParentFolder;
private nint _pidl;
private string _strParentFolder;
#endregion
#region Variables and Constants
private const int MAX_PATH = 260;
private const uint CMD_FIRST = 1;
private const uint CMD_LAST = 30000;
private const int S_OK = 0;
private static readonly int CbMenuItemInfo = Marshal.SizeOf<MENUITEMINFO>();
private static readonly int CbInvokeCommand = Marshal.SizeOf<CMINVOKECOMMANDINFOEX>();
#endregion
#region DLL Import
// Retrieves the IShellFolder interface for the desktop folder, which is the root of the Shell's namespace.
[DllImport("shell32.dll")]
private static extern int SHGetDesktopFolder(out nint ppshf);
// Takes a STRRET structure returned by IShellFolder::GetDisplayNameOf, converts it to a string, and places the result in a buffer.
[DllImport("shlwapi.dll", EntryPoint = "StrRetToBuf", ExactSpelling = false, CharSet = CharSet.Unicode, SetLastError = true)]
private static extern int StrRetToBuf(nint pstr, nint pidl, StringBuilder pszBuf, int cchBuf);
// The TrackPopupMenuEx function displays a shortcut menu at the specified location and tracks the selection of items on the shortcut menu. The shortcut menu can appear anywhere on the screen.
[DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
private static extern uint TrackPopupMenuEx(nint hmenu, TPM flags, int x, int y, nint hwnd, nint lptpm);
// The CreatePopupMenu function creates a drop-down menu, submenu, or shortcut menu. The menu is initially empty. You can insert or append menu items by using the InsertMenuItem function. You can also use the InsertMenu function to insert menu items and the AppendMenu function to append menu items.
[DllImport("user32", SetLastError = true, CharSet = CharSet.Auto)]
private static extern nint CreatePopupMenu();
// The DestroyMenu function destroys the specified menu and frees any memory that the menu occupies.
[DllImport("user32", SetLastError = true, CharSet = CharSet.Auto)]
private static extern bool DestroyMenu(nint hMenu);
#endregion
#region Shell GUIDs
private static Guid iID_IShellFolder = new("{000214E6-0000-0000-C000-000000000046}");
private static Guid iID_IContextMenu = new("{000214e4-0000-0000-c000-000000000046}");
private static Guid iID_IContextMenu2 = new("{000214f4-0000-0000-c000-000000000046}");
private static Guid iID_IContextMenu3 = new("{bcfce0a0-ec17-11d0-8d10-00a0c90f2719}");
#endregion
#region Structs
[StructLayout(LayoutKind.Sequential)]
private struct CWPSTRUCT
{
public nint Lparam;
public nint Wparam;
public int Message;
public nint Hwnd;
}
// Contains extended information about a shortcut menu command
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
private struct CMINVOKECOMMANDINFOEX
{
public int CbSize;
public CMIC FMask;
public nint Hwnd;
public nint LpVerb;
[MarshalAs(UnmanagedType.LPStr)]
public string LpParameters;
[MarshalAs(UnmanagedType.LPStr)]
public string LpDirectory;
public SW NShow;
public int DwHotKey;
public nint HIcon;
[MarshalAs(UnmanagedType.LPStr)]
public string LpTitle;
public nint LpVerbW;
[MarshalAs(UnmanagedType.LPWStr)]
public string LpParametersW;
[MarshalAs(UnmanagedType.LPWStr)]
public string LpDirectoryW;
[MarshalAs(UnmanagedType.LPWStr)]
public string LpTitleW;
public POINT PtInvoke;
}
// Contains information about a menu item
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
private struct MENUITEMINFO
{
public MENUITEMINFO(string text)
{
CbSize = CbMenuItemInfo;
DwTypeData = text;
Cch = text.Length;
FMask = 0;
FType = 0;
FState = 0;
WID = 0;
HSubMenu = nint.Zero;
HbmpChecked = nint.Zero;
HbmpUnchecked = nint.Zero;
DwItemData = nint.Zero;
HbmpItem = nint.Zero;
}
public int CbSize;
public MIIM FMask;
public MFT FType;
public MFS FState;
public uint WID;
public nint HSubMenu;
public nint HbmpChecked;
public nint HbmpUnchecked;
public nint DwItemData;
[MarshalAs(UnmanagedType.LPTStr)]
public string DwTypeData;
public int Cch;
public nint HbmpItem;
}
// A generalized global memory handle used for data transfer operations by the
// IAdviseSink, IDataObject, and IOleCache interfaces
[StructLayout(LayoutKind.Sequential)]
private struct STGMEDIUM
{
public TYMED Tymed;
public nint HBitmap;
public nint HMetaFilePict;
public nint HEnhMetaFile;
public nint HGlobal;
public nint LpszFileName;
public nint Pstm;
public nint Pstg;
public nint PUnkForRelease;
}
// Defines the x- and y-coordinates of a point
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
private struct POINT
{
public POINT(int x, int y)
{
X = x;
Y = y;
}
public int X;
public int Y;
}
#endregion
#region Enums
// Defines the values used with the IShellFolder::GetDisplayNameOf and IShellFolder::SetNameOf
// methods to specify the type of file or folder names used by those methods
[Flags]
private enum SHGNO
{
NORMAL = 0x0000,
INFOLDER = 0x0001,
FOREDITING = 0x1000,
FORADDRESSBAR = 0x4000,
FORPARSING = 0x8000,
}
// The attributes that the caller is requesting, when calling IShellFolder::GetAttributesOf
[Flags]
private enum SFGAO : uint
{
BROWSABLE = 0x8000000,
CANCOPY = 1,
CANDELETE = 0x20,
CANLINK = 4,
CANMONIKER = 0x400000,
CANMOVE = 2,
CANRENAME = 0x10,
CAPABILITYMASK = 0x177,
COMPRESSED = 0x4000000,
CONTENTSMASK = 0x80000000,
DISPLAYATTRMASK = 0xfc000,
DROPTARGET = 0x100,
ENCRYPTED = 0x2000,
FILESYSANCESTOR = 0x10000000,
FILESYSTEM = 0x40000000,
FOLDER = 0x20000000,
GHOSTED = 0x8000,
HASPROPSHEET = 0x40,
HASSTORAGE = CANMONIKER,
HASSUBFOLDER = CONTENTSMASK,
HIDDEN = 0x80000,
ISSLOW = 0x4000,
LINK = 0x10000,
NEWCONTENT = 0x200000,
NONENUMERATED = 0x100000,
READONLY = 0x40000,
REMOVABLE = 0x2000000,
SHARE = 0x20000,
STORAGE = 8,
STORAGEANCESTOR = 0x800000,
STORAGECAPMASK = 0x70c50008,
STREAM = CANMONIKER,
VALIDATE = 0x1000000,
}
// Determines the type of items included in an enumeration.
// These values are used with the IShellFolder::EnumObjects method
[Flags]
private enum SHCONTF
{
FOLDERS = 0x0020,
NONFOLDERS = 0x0040,
INCLUDEHIDDEN = 0x0080,
INIT_ON_FIRST_NEXT = 0x0100,
NETPRINTERSRCH = 0x0200,
SHAREABLE = 0x0400,
STORAGE = 0x0800,
}
// Specifies how the shortcut menu can be changed when calling IContextMenu::QueryContextMenu
[Flags]
private enum CMF : uint
{
NORMAL = 0x00000000,
DEFAULTONLY = 0x00000001,
VERBSONLY = 0x00000002,
EXPLORE = 0x00000004,
NOVERBS = 0x00000008,
CANRENAME = 0x00000010,
NODEFAULT = 0x00000020,
INCLUDESTATIC = 0x00000040,
EXTENDEDVERBS = 0x00000100,
RESERVED = 0xffff0000,
}
// Flags specifying the information to return when calling IContextMenu::GetCommandString
[Flags]
private enum GCS : uint
{
VERBA = 0,
HELPTEXTA = 1,
VALIDATEA = 2,
VERBW = 4,
HELPTEXTW = 5,
VALIDATEW = 6,
}
// Specifies how TrackPopupMenuEx positions the shortcut menu horizontally
[Flags]
private enum TPM : uint
{
LEFTBUTTON = 0x0000,
RIGHTBUTTON = 0x0002,
LEFTALIGN = LEFTBUTTON,
CENTERALIGN = 0x0004,
RIGHTALIGN = 0x0008,
TOPALIGN = LEFTBUTTON,
VCENTERALIGN = 0x0010,
BOTTOMALIGN = 0x0020,
HORIZONTAL = LEFTBUTTON,
VERTICAL = 0x0040,
NONOTIFY = 0x0080,
RETURNCMD = 0x0100,
RECURSE = 0x0001,
HORPOSANIMATION = 0x0400,
HORNEGANIMATION = 0x0800,
VERPOSANIMATION = 0x1000,
VERNEGANIMATION = 0x2000,
NOANIMATION = 0x4000,
LAYOUTRTL = 0x8000,
}
// The cmd for a custom added menu item
private enum CMD_CUSTOM
{
ExpandCollapse = (int)CMD_LAST + 1,
}
// Flags used with the CMINVOKECOMMANDINFOEX structure
[Flags]
private enum CMIC : uint
{
HOTKEY = 0x00000020,
ICON = 0x00000010,
FLAG_NO_UI = 0x00000400,
UNICODE = 0x00004000,
NO_CONSOLE = 0x00008000,
ASYNCOK = 0x00100000,
NOZONECHECKS = 0x00800000,
SHIFT_DOWN = 0x10000000,
CONTROL_DOWN = 0x40000000,
FLAG_LOG_USAGE = 0x04000000,
PTINVOKE = 0x20000000,
}
// Specifies how the window is to be shown
[Flags]
private enum SW
{
HIDE = 0,
SHOWNORMAL = 1,
NORMAL = SHOWNORMAL,
SHOWMINIMIZED = 2,
SHOWMAXIMIZED = 3,
MAXIMIZE = SHOWMAXIMIZED,
SHOWNOACTIVATE = 4,
SHOW = 5,
MINIMIZE = 6,
SHOWMINNOACTIVE = 7,
SHOWNA = 8,
RESTORE = 9,
SHOWDEFAULT = 10,
}
// Window message flags
[Flags]
private enum WM : uint
{
ACTIVATE = 0x6,
ACTIVATEAPP = 0x1C,
AFXFIRST = 0x360,
AFXLAST = 0x37F,
APP = 0x8000,
ASKCBFORMATNAME = 0x30C,
CANCELJOURNAL = 0x4B,
CANCELMODE = 0x1F,
CAPTURECHANGED = 0x215,
CHANGECBCHAIN = 0x30D,
CHAR = 0x102,
CHARTOITEM = 0x2F,
CHILDACTIVATE = 0x22,
CLEAR = 0x303,
CLOSE = 0x10,
COMMAND = 0x111,
COMPACTING = 0x41,
COMPAREITEM = 0x39,
CONTEXTMENU = 0x7B,
COPY = 0x301,
COPYDATA = 0x4A,
CREATE = 0x1,
CTLCOLORBTN = 0x135,
CTLCOLORDLG = 0x136,
CTLCOLOREDIT = 0x133,
CTLCOLORLISTBOX = 0x134,
CTLCOLORMSGBOX = 0x132,
CTLCOLORSCROLLBAR = 0x137,
CTLCOLORSTATIC = 0x138,
CUT = 0x300,
DEADCHAR = 0x103,
DELETEITEM = 0x2D,
DESTROY = 0x2,
DESTROYCLIPBOARD = 0x307,
DEVICECHANGE = 0x219,
DEVMODECHANGE = 0x1B,
DISPLAYCHANGE = 0x7E,
DRAWCLIPBOARD = 0x308,
DRAWITEM = 0x2B,
DROPFILES = 0x233,
ENABLE = 0xA,
ENDSESSION = 0x16,
ENTERIDLE = 0x121,
ENTERMENULOOP = 0x211,
ENTERSIZEMOVE = 0x231,
ERASEBKGND = 0x14,
EXITMENULOOP = 0x212,
EXITSIZEMOVE = 0x232,
FONTCHANGE = 0x1D,
GETDLGCODE = 0x87,
GETFONT = 0x31,
GETHOTKEY = 0x33,
GETICON = 0x7F,
GETMINMAXINFO = 0x24,
GETOBJECT = 0x3D,
GETSYSMENU = 0x313,
GETTEXT = 0xD,
GETTEXTLENGTH = 0xE,
HANDHELDFIRST = 0x358,
HANDHELDLAST = 0x35F,
HELP = 0x53,
HOTKEY = 0x312,
HSCROLL = 0x114,
HSCROLLCLIPBOARD = 0x30E,
ICONERASEBKGND = 0x27,
IME_CHAR = 0x286,
IME_COMPOSITION = 0x10F,
IME_COMPOSITIONFULL = 0x284,
IME_CONTROL = 0x283,
IME_ENDCOMPOSITION = 0x10E,
IME_KEYDOWN = 0x290,
IME_KEYLAST = IME_COMPOSITION,
IME_KEYUP = 0x291,
IME_NOTIFY = 0x282,
IME_REQUEST = 0x288,
IME_SELECT = 0x285,
IME_SETCONTEXT = 0x281,
IME_STARTCOMPOSITION = 0x10D,
INITDIALOG = 0x110,
INITMENU = 0x116,
INITMENUPOPUP = 0x117,
INPUTLANGCHANGE = 0x51,
INPUTLANGCHANGEREQUEST = 0x50,
KEYDOWN = 0x100,
KEYFIRST = KEYDOWN,
KEYLAST = 0x108,
KEYUP = 0x101,
KILLFOCUS = 0x8,
LBUTTONDBLCLK = 0x203,
LBUTTONDOWN = 0x201,
LBUTTONUP = 0x202,
LVM_GETEDITCONTROL = 0x1018,
LVM_SETIMAGELIST = 0x1003,
MBUTTONDBLCLK = 0x209,
MBUTTONDOWN = 0x207,
MBUTTONUP = 0x208,
MDIACTIVATE = 0x222,
MDICASCADE = 0x227,
MDICREATE = 0x220,
MDIDESTROY = 0x221,
MDIGETACTIVE = 0x229,
MDIICONARRANGE = 0x228,
MDIMAXIMIZE = 0x225,
MDINEXT = 0x224,
MDIREFRESHMENU = 0x234,
MDIRESTORE = 0x223,
MDISETMENU = 0x230,
MDITILE = 0x226,
MEASUREITEM = 0x2C,
MENUCHAR = 0x120,
MENUCOMMAND = 0x126,
MENUDRAG = 0x123,
MENUGETOBJECT = 0x124,
MENURBUTTONUP = 0x122,
MENUSELECT = 0x11F,
MOUSEACTIVATE = 0x21,
MOUSEFIRST = 0x200,
MOUSEHOVER = 0x2A1,
MOUSELAST = 0x20A,
MOUSELEAVE = 0x2A3,
MOUSEMOVE = MOUSEFIRST,
MOUSEWHEEL = MOUSELAST,
MOVE = 0x3,
MOVING = 0x216,
NCACTIVATE = 0x86,
NCCALCSIZE = 0x83,
NCCREATE = 0x81,
NCDESTROY = 0x82,
NCHITTEST = 0x84,
NCLBUTTONDBLCLK = 0xA3,
NCLBUTTONDOWN = 0xA1,
NCLBUTTONUP = 0xA2,
NCMBUTTONDBLCLK = 0xA9,
NCMBUTTONDOWN = 0xA7,
NCMBUTTONUP = 0xA8,
NCMOUSEHOVER = 0x2A0,
NCMOUSELEAVE = 0x2A2,
NCMOUSEMOVE = 0xA0,
NCPAINT = 0x85,
NCRBUTTONDBLCLK = 0xA6,
NCRBUTTONDOWN = 0xA4,
NCRBUTTONUP = 0xA5,
NEXTDLGCTL = 0x28,
NEXTMENU = 0x213,
NOTIFY = 0x4E,
NOTIFYFORMAT = 0x55,
NULL = 0x0,
PAINT = 0xF,
PAINTCLIPBOARD = 0x309,
PAINTICON = 0x26,
PALETTECHANGED = 0x311,
PALETTEISCHANGING = 0x310,
PARENTNOTIFY = 0x210,
PASTE = 0x302,
PENWINFIRST = 0x380,
PENWINLAST = 0x38F,
POWER = 0x48,
PRINT = 0x317,
PRINTCLIENT = 0x318,
QUERYDRAGICON = 0x37,
QUERYENDSESSION = 0x11,
QUERYNEWPALETTE = 0x30F,
QUERYOPEN = 0x13,
QUEUESYNC = 0x23,
QUIT = 0x12,
RBUTTONDBLCLK = 0x206,
RBUTTONDOWN = 0x204,
RBUTTONUP = 0x205,
RENDERALLFORMATS = 0x306,
RENDERFORMAT = 0x305,
SETCURSOR = 0x20,
SETFOCUS = 0x7,
SETFONT = 0x30,
SETHOTKEY = 0x32,
SETICON = 0x80,
SETMARGINS = 0xD3,
SETREDRAW = 0xB,
SETTEXT = 0xC,
SETTINGCHANGE = 0x1A,
SHOWWINDOW = 0x18,
SIZE = 0x5,
SIZECLIPBOARD = 0x30B,
SIZING = 0x214,
SPOOLERSTATUS = 0x2A,
STYLECHANGED = 0x7D,
STYLECHANGING = 0x7C,
SYNCPAINT = 0x88,
SYSCHAR = 0x106,
SYSCOLORCHANGE = 0x15,
SYSCOMMAND = 0x112,
SYSDEADCHAR = 0x107,
SYSKEYDOWN = 0x104,
SYSKEYUP = 0x105,
TCARD = 0x52,
TIMECHANGE = 0x1E,
TIMER = 0x113,
TVM_GETEDITCONTROL = 0x110F,
TVM_SETIMAGELIST = 0x1109,
UNDO = 0x304,
UNINITMENUPOPUP = 0x125,
USER = 0x400,
USERCHANGED = 0x54,
VKEYTOITEM = 0x2E,
VSCROLL = 0x115,
VSCROLLCLIPBOARD = 0x30A,
WINDOWPOSCHANGED = 0x47,
WINDOWPOSCHANGING = 0x46,
WININICHANGE = SETTINGCHANGE,
SH_NOTIFY = 0x0401,
}
// Specifies the content of the new menu item
[Flags]
private enum MFT : uint
{
GRAYED = 0x00000003,
DISABLED = GRAYED,
CHECKED = 0x00000008,
SEPARATOR = 0x00000800,
RADIOCHECK = 0x00000200,
BITMAP = 0x00000004,