/// <summary>
/// Returns an icon for a given file - indicated by the name parameter.
/// </summary>
/// <param name="name">Pathname for file.</param>
/// <param name="size">Large or small</param>
/// <param name="linkOverlay">Whether to include the link icon</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFileIcon(string name, IconSize size, bool linkOverlay)
{
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
int flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (true == linkOverlay)
{
flags += Shell32.SHGFI_LINKOVERLAY;
}
// Check the size specified for return.
if (IconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
Shell32.SHGetFileInfo(name, Shell32.FILE_ATTRIBUTE_NORMAL, ref shfi, (int)System.Runtime.InteropServices.Marshal.SizeOf(shfi), flags);
// Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon);
// Cleanup
return icon;
}
public static System.Drawing.Icon GetFileIcon(string name, IconSize size, bool linkOverlay)
{
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (true == linkOverlay) flags += Shell32.SHGFI_LINKOVERLAY;
/* Check the size specified for return. */
if (IconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON ; // include the small icon flag
}
else
{
flags += Shell32.SHGFI_LARGEICON ; // include the large icon flag
}
Shell32.SHGetFileInfo( name,
Shell32.FILE_ATTRIBUTE_NORMAL,
ref shfi,
(uint) System.Runtime.InteropServices.Marshal.SizeOf(shfi),
flags );
// Copy (clone) the returned icon to a new object, thus allowing us
// to call DestroyIcon immediately
if (shfi.hIcon == IntPtr.Zero)
{
return null;
}
else
{
System.Drawing.Icon icon = (System.Drawing.Icon)
System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon( shfi.hIcon ); // Cleanup
return icon;
}
}
public static string kind(string extension)
{
Shell32.SHFILEINFO shinfo = new Shell32.SHFILEINFO();
IntPtr hSuccess = Shell32.SHGetFileInfo(extension, 0, ref shinfo, (uint)Marshal.SizeOf(shinfo),
Shell32.SHGFI_TYPENAME | Shell32.SHGFI_USEFILEATTRIBUTES);
if (hSuccess != IntPtr.Zero)
{
return Convert.ToString(shinfo.szTypeName.Trim());
}
return null;
}
/// <summary>
/// Used to access system folder icons.
/// </summary>
/// <param name="size">Specify large or small icons.</param>
/// <param name="folderType">Specify open or closed FolderType.</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFolderIcon(IconSize size, FolderType folderType)
{
// Need to add size check, although errors generated at present!
int flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
{
flags += Shell32.SHGFI_OPENICON;
}
if (IconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
// Get the folder icon
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
Shell32.SHGetFileInfo("dummy", Shell32.FILE_ATTRIBUTE_DIRECTORY, ref shfi, (int)System.Runtime.InteropServices.Marshal.SizeOf(shfi), flags);
System.Drawing.Icon.FromHandle(shfi.hIcon);
// Load the icon from an HICON handle
// Now clone the icon, so that it can be successfully stored in an ImageList
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon);
// Cleanup
return icon;
}
/// <summary>
/// Used to access system folder icons.
/// </summary>
/// <param name="size">Specify large or small icons.</param>
/// <param name="folderType">Specify open or closed FolderType.</param>
/// <param name="shfi">Return Folder Information</param>
/// <returns>System.Drawing.Icon</returns>
public static Icon GetFolderIcon(IconSize size, FolderType folderType, ref Shell32.SHFILEINFO shfi)
{
// Need to add size check, although errors generated at present!
Shell32.SHGetFileInfoConstants flags = Shell32.SHGetFileInfoConstants.SHGFI_TYPENAME | Shell32.SHGetFileInfoConstants.SHGFI_DISPLAYNAME | Shell32.SHGetFileInfoConstants.SHGFI_ICON | Shell32.SHGetFileInfoConstants.SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
flags |= Shell32.SHGetFileInfoConstants.SHGFI_OPENICON;
if (IconSize.Small == size)
flags |= Shell32.SHGetFileInfoConstants.SHGFI_SMALLICON;
else
flags |= Shell32.SHGetFileInfoConstants.SHGFI_LARGEICON;
IntPtr hIml;
// Get the folder icon
shfi = new Shell32.SHFILEINFO();
if (Utils.IsSevenOrAbove()) // Windows 7 FIX
{
hIml = Shell32.SHGetFileInfo(Environment.GetFolderPath(Environment.SpecialFolder.System),
Shell32.FILE_ATTRIBUTE.DIRECTORY,
ref shfi,
(uint)Marshal.SizeOf(shfi),
flags);
}
else
{
hIml = Shell32.SHGetFileInfo(null,
Shell32.FILE_ATTRIBUTE.DIRECTORY,
ref shfi,
(uint)Marshal.SizeOf(shfi),
flags);
}
if (shfi.hIcon == IntPtr.Zero) return null;
if (!Utils.IsXpOrAbove()) return GetManagedIcon(shfi.hIcon);
// Get the System IImageList object from the Shell:
Guid iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
Shell32.IImageList iImageList = null;
int ret = Shell32.SHGetImageList(
(int)size,
ref iidImageList,
ref iImageList
);
// the image list handle is the IUnknown pointer, but
// using Marshal.GetIUnknownForObject doesn't return
// the right value. It really doesn't hurt to make
// a second call to get the handle:
Shell32.SHGetImageListHandle((int)size, ref iidImageList, ref hIml);
IntPtr hIcon = IntPtr.Zero;
if (iImageList == null)
{
hIcon = Comctl32.ImageList_GetIcon(
hIml,
shfi.iIcon,
(int)Comctl32.ImageListDrawItemConstants.ILD_TRANSPARENT);
}
else
{
iImageList.GetIcon(
shfi.iIcon,
(int)Comctl32.ImageListDrawItemConstants.ILD_TRANSPARENT,
ref hIcon);
}
return hIcon == IntPtr.Zero ? GetManagedIcon(shfi.hIcon) : GetManagedIcon(hIcon);
}
/// <summary>
/// Returns an icon for a given file - indicated by the name parameter.
/// </summary>
/// <param name="name">Extension or pathname for file.</param>
/// <param name="size">Large or small</param>
/// <param name="linkOverlay">Whether to include the link icon</param>
/// <param name="shfi">Return File Information</param>
/// <returns>System.Drawing.Icon</returns>
public static Icon GetFileIcon(string name, IconSize size, bool linkOverlay, ref Shell32.SHFILEINFO shfi)
{
name = Environment.ExpandEnvironmentVariables(name);
shfi = new Shell32.SHFILEINFO();
Shell32.SHGetFileInfoConstants flags = Shell32.SHGetFileInfoConstants.SHGFI_TYPENAME | Shell32.SHGetFileInfoConstants.SHGFI_DISPLAYNAME | Shell32.SHGetFileInfoConstants.SHGFI_ICON | Shell32.SHGetFileInfoConstants.SHGFI_SHELLICONSIZE | Shell32.SHGetFileInfoConstants.SHGFI_SYSICONINDEX | Shell32.SHGetFileInfoConstants.SHGFI_USEFILEATTRIBUTES;
if (linkOverlay) flags |= Shell32.SHGetFileInfoConstants.SHGFI_LINKOVERLAY;
/* Check the size specified for return. */
if (IconSize.Small == size)
flags |= Shell32.SHGetFileInfoConstants.SHGFI_SMALLICON;
else
flags |= Shell32.SHGetFileInfoConstants.SHGFI_LARGEICON;
IntPtr hIml = Shell32.SHGetFileInfo(name,
Shell32.FILE_ATTRIBUTE.NORMAL,
ref shfi,
(uint)Marshal.SizeOf(shfi),
flags);
if (shfi.hIcon == IntPtr.Zero) return null;
if (!Utils.IsXpOrAbove()) return GetManagedIcon(shfi.hIcon);
// Get the System IImageList object from the Shell:
Guid iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
Shell32.IImageList iImageList = null;
int ret = Shell32.SHGetImageList(
(int)size,
ref iidImageList,
ref iImageList
);
// the image list handle is the IUnknown pointer, but
// using Marshal.GetIUnknownForObject doesn't return
// the right value. It really doesn't hurt to make
// a second call to get the handle:
Shell32.SHGetImageListHandle((int)size, ref iidImageList, ref hIml);
IntPtr hIcon = IntPtr.Zero;
if (iImageList == null)
{
hIcon = Comctl32.ImageList_GetIcon(
hIml,
shfi.iIcon,
(int)Comctl32.ImageListDrawItemConstants.ILD_TRANSPARENT);
}
else
{
iImageList.GetIcon(
shfi.iIcon,
(int)Comctl32.ImageListDrawItemConstants.ILD_TRANSPARENT,
ref hIcon);
}
return hIcon == IntPtr.Zero ? GetManagedIcon(shfi.hIcon) : GetManagedIcon(hIcon);
}
