Mercurial > shortcutkeyfinder
view ShortcutKeyFinder/Win32Helpers.cs @ 0:209d9210c18f default tip
It works.
author | Brad Greco <brad@bgreco.net> |
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date | Sat, 25 Jun 2016 13:42:54 +1000 |
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using System; using System.Drawing; using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes; using System.Text; namespace ShortcutKeyFinder { /// <summary>Various functions to call the Win32 API</summary> /// <remarks>Method signatures taken from http://www.pinvoke.net/ </remarks> class Win32Helpers { public const int STGM_READ = 0x00000000; public const int STGM_READWRITE = 0x00000002; public const int ILD_NORMAL = 0; public const int SW_SHOWNORMAL = 1; public const uint SEE_MASK_INVOKEIDLIST = 0x0000000C; public const uint BCM_SETSHIELD = 0x160C; public const int SHGFI_SMALLICON = 0x000000001; public const int SHGFI_ICON = 0x000000100; public const int SHGFI_DISPLAYNAME = 0x000000200; public const int SHGFI_SYSICONINDEX = 0x000004000; #region GetShortcutHotkey, SetShortcutHotkey // The CharSet must match the CharSet of the corresponding PInvoke signature [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] struct WIN32_FIND_DATAW { public uint dwFileAttributes; public System.Runtime.InteropServices.ComTypes.FILETIME ftCreationTime; public System.Runtime.InteropServices.ComTypes.FILETIME ftLastAccessTime; public System.Runtime.InteropServices.ComTypes.FILETIME ftLastWriteTime; public uint nFileSizeHigh; public uint nFileSizeLow; public uint dwReserved0; public uint dwReserved1; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string cFileName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)] public string cAlternateFileName; } /// <summary>IShellLink.GetPath fFlags: Flags that specify the type of path information to retrieve</summary> [Flags()] enum SLGP_FLAGS { /// <summary>Retrieves the standard short (8.3 format) file name</summary> SLGP_SHORTPATH = 0x1, /// <summary>Retrieves the Universal Naming Convention (UNC) path name of the file</summary> SLGP_UNCPRIORITY = 0x2, /// <summary>Retrieves the raw path name. A raw path is something that might not exist and may include environment variables that need to be expanded</summary> SLGP_RAWPATH = 0x4 } /// <summary>IShellLink.Resolve fFlags</summary> [Flags()] enum SLR_FLAGS { /// <summary> /// Do not display a dialog box if the link cannot be resolved. When SLR_NO_UI is set, /// the high-order word of fFlags can be set to a time-out value that specifies the /// maximum amount of time to be spent resolving the link. The function returns if the /// link cannot be resolved within the time-out duration. If the high-order word is set /// to zero, the time-out duration will be set to the default value of 3,000 milliseconds /// (3 seconds). To specify a value, set the high word of fFlags to the desired time-out /// duration, in milliseconds. /// </summary> SLR_NO_UI = 0x1, /// <summary>Obsolete and no longer used</summary> SLR_ANY_MATCH = 0x2, /// <summary>If the link object has changed, update its path and list of identifiers. /// If SLR_UPDATE is set, you do not need to call IPersistFile::IsDirty to determine /// whether or not the link object has changed.</summary> SLR_UPDATE = 0x4, /// <summary>Do not update the link information</summary> SLR_NOUPDATE = 0x8, /// <summary>Do not execute the search heuristics</summary> SLR_NOSEARCH = 0x10, /// <summary>Do not use distributed link tracking</summary> SLR_NOTRACK = 0x20, /// <summary>Disable distributed link tracking. By default, distributed link tracking tracks /// removable media across multiple devices based on the volume name. It also uses the /// Universal Naming Convention (UNC) path to track remote file systems whose drive letter /// has changed. Setting SLR_NOLINKINFO disables both types of tracking.</summary> SLR_NOLINKINFO = 0x40, /// <summary>Call the Microsoft Windows Installer</summary> SLR_INVOKE_MSI = 0x80 } /// <summary>The IShellLink interface allows Shell links to be created, modified, and resolved</summary> [ComImport(), InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("000214F9-0000-0000-C000-000000000046")] interface IShellLinkW { /// <summary>Retrieves the path and file name of a Shell link object</summary> void GetPath([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cchMaxPath, out WIN32_FIND_DATAW pfd, SLGP_FLAGS fFlags); /// <summary>Retrieves the list of item identifiers for a Shell link object</summary> void GetIDList(out IntPtr ppidl); /// <summary>Sets the pointer to an item identifier list (PIDL) for a Shell link object.</summary> void SetIDList(IntPtr pidl); /// <summary>Retrieves the description string for a Shell link object</summary> void GetDescription([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName, int cchMaxName); /// <summary>Sets the description for a Shell link object. The description can be any application-defined string</summary> void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName); /// <summary>Retrieves the name of the working directory for a Shell link object</summary> void GetWorkingDirectory([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir, int cchMaxPath); /// <summary>Sets the name of the working directory for a Shell link object</summary> void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir); /// <summary>Retrieves the command-line arguments associated with a Shell link object</summary> void GetArguments([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs, int cchMaxPath); /// <summary>Sets the command-line arguments for a Shell link object</summary> void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs); /// <summary>Retrieves the hot key for a Shell link object</summary> void GetHotkey(out ushort pwHotkey); /// <summary>Sets a hot key for a Shell link object</summary> void SetHotkey(ushort wHotkey); /// <summary>Retrieves the show command for a Shell link object</summary> void GetShowCmd(out int piShowCmd); /// <summary>Sets the show command for a Shell link object. The show command sets the initial show state of the window.</summary> void SetShowCmd(int iShowCmd); /// <summary>Retrieves the location (path and index) of the icon for a Shell link object</summary> void GetIconLocation([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath, int cchIconPath, out int piIcon); /// <summary>Sets the location (path and index) of the icon for a Shell link object</summary> void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath, int iIcon); /// <summary>Sets the relative path to the Shell link object</summary> void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel, int dwReserved); /// <summary>Attempts to find the target of a Shell link, even if it has been moved or renamed</summary> void Resolve(IntPtr hwnd, SLR_FLAGS fFlags); /// <summary>Sets the path and file name of a Shell link object</summary> void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile); } /// <summary>Retrieves the hotkey assigned to a shortcut (.lnk) file</summary> /// <param name="path">Path to a shortcut (.lnk) file</param> /// <returns>A binary value representing the shortcut's hotkey</returns> public static ushort GetShortcutHotkey(string path) { Type obj = Type.GetTypeFromCLSID(new Guid("00021401-0000-0000-C000-000000000046"), true); IShellLinkW link = Activator.CreateInstance(obj) as IShellLinkW; ((IPersistFile)link).Load(path, STGM_READ); ushort hotkey; link.GetHotkey(out hotkey); return hotkey; } /// <summary>Assigns a hotkey to a shortcut (.lnk) file</summary> /// <param name="path">Path to an exising shortcut (.lnk) file to modify</param> /// <param name="hotkey">Binary value containing the hotkey to set</param> public static bool SetShortcutHotkey(string path, ushort hotkey) { Type obj = Type.GetTypeFromCLSID(new Guid("00021401-0000-0000-C000-000000000046"), true); IShellLinkW link = Activator.CreateInstance(obj) as IShellLinkW; try { ((IPersistFile)link).Load(path, STGM_READWRITE); link.SetHotkey(hotkey); ((IPersistFile)link).Save(path, false); return true; } catch { return false; } } #endregion #region GetFileInfo [DllImport("shell32.dll", CharSet = CharSet.Auto)] public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags); [DllImport("comctl32.dll", SetLastError = true)] public static extern IntPtr ImageList_GetIcon(IntPtr himl, int i, int flags); [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct SHFILEINFO { public IntPtr hIcon; public int iIcon; public uint dwAttributes; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string szDisplayName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)] public string szTypeName; }; /// <summary>Retrieves the hotkey assigned to a shortcut (.lnk) file</summary> /// <param name="path">Path of the file to retreive properties from</param> /// <param name="smallIcon">Set to true to retreive the 16x16 icon. By default, the 32x32 icon is retrieved.</param> /// <param name="noOverlays">Set to true to remove icon overlays as displayed in Windows Explorer (for example, the shortcut arrow)</param> public static FileInfo GetFileInfo(string path, bool smallIcon = false, bool noOverlays = false) { SHFILEINFO info = new SHFILEINFO(); uint flags = SHGFI_DISPLAYNAME; if (smallIcon) flags |= SHGFI_SMALLICON; if (noOverlays) flags |= SHGFI_SYSICONINDEX; else flags |= SHGFI_ICON; IntPtr shgfi = SHGetFileInfo(path, 0, ref info, (uint)Marshal.SizeOf(info), flags); if (shgfi == IntPtr.Zero) return null; if (noOverlays) { IntPtr icon = ImageList_GetIcon(shgfi, info.iIcon, ILD_NORMAL); return new FileInfo(info.szDisplayName, icon != IntPtr.Zero ? Icon.FromHandle(icon) : null); } else return new FileInfo(info.szDisplayName, Icon.FromHandle(info.hIcon)); } #endregion #region ShowFilePropertiesWindow [DllImport("shell32.dll", CharSet = CharSet.Auto)] static extern bool ShellExecuteEx(ref SHELLEXECUTEINFO lpExecInfo); [StructLayout(LayoutKind.Sequential)] public struct SHELLEXECUTEINFO { public int cbSize; public uint fMask; public IntPtr hwnd; [MarshalAs(UnmanagedType.LPTStr)] public string lpVerb; [MarshalAs(UnmanagedType.LPTStr)] public string lpFile; [MarshalAs(UnmanagedType.LPTStr)] public string lpParameters; [MarshalAs(UnmanagedType.LPTStr)] public string lpDirectory; public int nShow; public IntPtr hInstApp; public IntPtr lpIDList; [MarshalAs(UnmanagedType.LPTStr)] public string lpClass; public IntPtr hkeyClass; public uint dwHotKey; public IntPtr hIcon; public IntPtr hProcess; } /// <summary>Displays the Properties window of a file</summary> /// <param name="path">File to display the properties window for</param> /// <param name="parentWindow">Handle to the parent window for error messages to be displayed</param> public static void ShowFilePropertiesWindow(string path, IntPtr parentWindow = default(IntPtr)) { SHELLEXECUTEINFO info = new SHELLEXECUTEINFO(); info.cbSize = Marshal.SizeOf(info); info.fMask = SEE_MASK_INVOKEIDLIST; info.hwnd = parentWindow; info.lpVerb = "properties"; info.lpFile = path; info.nShow = SW_SHOWNORMAL; ShellExecuteEx(ref info); } #endregion #region AddUacShield [DllImport("user32", CharSet = CharSet.Auto, SetLastError = true)] static extern int SendMessage(IntPtr hWnd, UInt32 Msg, int wParam, IntPtr lParam); /// <summary>Adds a UAC shield icon to a button</summary> /// <param name="button">Button to add the shield icon to</param> public static void AddUacShield(System.Windows.Forms.Button button) { button.FlatStyle = System.Windows.Forms.FlatStyle.System; SendMessage(button.Handle, BCM_SETSHIELD, 0, (IntPtr)1); } #endregion } /// <summary>Class to hold basic file information</summary> class FileInfo { public string DisplayName; public Icon Icon; public FileInfo(string DisplayName, Icon Icon) { this.DisplayName = DisplayName; this.Icon = Icon; } } }