/// <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();
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 ;
}
else
{
flags += Shell32.SHGFI_LARGEICON ;
}
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 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 string GetDisplayName(string name, bool isDirectory)
{
uint flags = Shell32.SHGFI_TYPENAME | Shell32.SHGFI_USEFILEATTRIBUTES;
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
uint fileType = isDirectory ? Shell32.FILE_ATTRIBUTE_DIRECTORY : Shell32.FILE_ATTRIBUTE_NORMAL;
Shell32.SHGetFileInfo(name, fileType, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
return shfi.szTypeName;
}
/// <summary>
/// Internal add a icon to class
/// FOLDERS ONLY!!!!!!
/// </summary>
/// <param name="path">Icon Path on filesystem, or extension</param>
/// <param name="iconSize">Icon Size</param>
/// <param name="iconProp">Icon Properties to assign to list</param>
/// <param name="folder">Folder type (open or closed)</param>
private void Add(string path, IconReader.IconSize iconSize, IconProperties iconProp, IconReader.FolderType folder)
{
iconProp.IconsIndex[iconSize] = -1;
iconProp.IconsInfo[iconSize] = new Shell32.SHFILEINFO();
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
iconProp.Icons[iconSize] = IconReader.GetFolderIcon(iconSize, folder, ref shfi);
iconProp.IconsInfo[iconSize] = shfi;
if (IImageList[iconSize] != null)
{
iconProp.IconsIndex[iconSize] = IImageList[iconSize].Images.Count;
IImageList[iconSize].Images.Add(path, iconProp.Icons[iconSize]);
}
}
/// <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!
uint 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( ".?.",
Shell32.FILE_ATTRIBUTE_DIRECTORY,
ref shfi,
(uint) 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>
/// 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 Icon GetFileIcon(string name, IconSize size, bool linkOverlay)
{
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (true == linkOverlay) flags += Shell32.SHGFI_LINKOVERLAY;
if (IconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
Shell32.SHGetFileInfo(name, Shell32.FILE_ATTRIBUTE_NORMAL, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
// Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
Icon icon = (Icon)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 (IconHelper.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 (!IconHelper.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 (!IconHelper.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>
/// Extract the icon from file, and return icon information
/// </summary>
/// <param name="path">File path,
/// such as ex: "C:\\Program Files\\NetMeeting\\conf.exe,1".</param>
/// <param name="size">The desired icon size</param>
/// <param name="linkOverlay">Whether to include the link icon</param>
/// <param name="shfi">The icon size</param>
/// <returns>This method always returns an icon with the especified size and thier information.</returns>
public static Icon ExtractIconFromFileEx(string path, IconSize size, bool linkOverlay, ref Shell32.SHFILEINFO shfi)
{
EmbeddedIconInfo embeddedIcon = GetEmbeddedIconInfo(Environment.ExpandEnvironmentVariables(path));
//Gets the handle of the icon.
return(GetFileIcon(embeddedIcon.FileName, size, linkOverlay, ref shfi));
}
