GARbro-mirror/Shell.cs

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2014-07-22 03:26:28 +08:00
//! \file Shell.cs
//! \date Tue Aug 02 13:48:55 2011
//! \brief Win32 shell functions.
//
// Copyright (C) 2011 by poddav
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.Text;
using System.Runtime.InteropServices;
namespace Rnd.Shell
{
/// <summary>
/// Wrapper around PathCreateFromUrl WINAPI call.
/// </summary>
class PathConverter
{
[DllImport("shlwapi.dll", EntryPoint="PathCreateFromUrlW", CharSet=CharSet.Unicode, SetLastError=true)]
private static extern Int32 PathCreateFromUrl(
string url, StringBuilder path,
ref Int32 size, UInt32 flags);
private StringBuilder buf;
private Int32 size;
public PathConverter (int capacity = 260)
{
buf = new StringBuilder (capacity);
}
public string UrlToPath (string url)
{
size = buf.Capacity;
Int32 rc = PathCreateFromUrl (url, buf, ref size, 0);
return rc == 0 ? buf.ToString (0, size) : "";
}
}
/// <summary>
/// Wrapper around SHGetFileInfo WINAPI call.
/// </summary>
class FileInfo
{
[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SHGetFileInfo(
string pszPath, Int32 dwFileAttributes,
ref SHFILEINFO psfi, int cbFileInfo, int uFlags);
[DllImport("User32.dll")]
public static extern int DestroyIcon(IntPtr hIcon);
[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;
public SHFILEINFO(bool b)
{
hIcon = IntPtr.Zero;
iIcon = 0;
dwAttributes = 0;
szDisplayName = "";
szTypeName = "";
}
};
[Flags]
public enum SHGFI : uint
{
/// <summary>get icon</summary>
Icon = 0x000000100,
/// <summary>get display name</summary>
DisplayName = 0x000000200,
/// <summary>get type name</summary>
TypeName = 0x000000400,
/// <summary>get attributes</summary>
Attributes = 0x000000800,
/// <summary>get icon location</summary>
IconLocation = 0x000001000,
/// <summary>return exe type</summary>
ExeType = 0x000002000,
/// <summary>get system icon index</summary>
SysIconIndex = 0x000004000,
/// <summary>put a link overlay on icon</summary>
LinkOverlay = 0x000008000,
/// <summary>show icon in selected state</summary>
Selected = 0x000010000,
/// <summary>get only specified attributes</summary>
Attr_Specified = 0x000020000,
/// <summary>get large icon</summary>
LargeIcon = 0x000000000,
/// <summary>get small icon</summary>
SmallIcon = 0x000000001,
/// <summary>get open icon</summary>
OpenIcon = 0x000000002,
/// <summary>get shell size icon</summary>
ShellIconSize = 0x000000004,
/// <summary>pszPath is a pidl</summary>
PIDL = 0x000000008,
/// <summary>use passed dwFileAttribute</summary>
UseFileAttributes= 0x000000010,
/// <summary>apply the appropriate overlays</summary>
AddOverlays = 0x000000020,
/// <summary>Get the index of the overlay in the upper 8 bits of the iIcon</summary>
OverlayIndex = 0x000000040,
}
public static string GetTypeName (string filename)
{
SHFILEINFO info = new SHFILEINFO(true);
int szInfo = Marshal.SizeOf (info);
int result = (int)SHGetFileInfo (filename, 0, ref info, szInfo, (int)SHGFI.TypeName);
// If uFlags does not contain SHGFI_EXETYPE or SHGFI_SYSICONINDEX,
// the return value is nonzero if successful, or zero otherwise.
if (result != 0)
return info.szTypeName;
else
return string.Empty;
}
public static SHFILEINFO? GetInfo (string filename, SHGFI flags)
{
SHFILEINFO info = new SHFILEINFO(true);
int szInfo = Marshal.SizeOf (info);
int result = (int)SHGetFileInfo (filename, 0, ref info, szInfo, (int)flags);
return result != 0? new Nullable<SHFILEINFO> (info): null;
}
}
/// <summary>
/// Wrapper around MoveFileEx WINAPI call.
/// </summary>
class File
{
[DllImport("kernel32.dll", EntryPoint="MoveFileExW", SetLastError=true, CharSet=CharSet.Unicode)]
public static extern bool MoveFileEx (string lpExistingFileName, string lpNewFileName, MoveFileFlags dwFlags);
[Flags]
public enum MoveFileFlags : uint
{
ReplaceExisting = 0x00000001,
CopyAllowed = 0x00000002,
DelayUntilReboot = 0x00000004,
WriteThrough = 0x00000008,
CreateHardlink = 0x00000010,
FailIfNotTrackable = 0x00000020
}
public static bool Rename (string szFrom, string szTo)
{
return MoveFileEx (szFrom, szTo, MoveFileFlags.ReplaceExisting);
}
}
}