private static FileInfo InternalGetFileInfo(string name, bool linkOverlay, IconSize size)
{
NativeMethods.Shell32.SHFILEINFO shfi = new NativeMethods.Shell32.SHFILEINFO();
NativeMethods.Shell32.SHGFI flags = NativeMethods.Shell32.SHGFI.Icon |
NativeMethods.Shell32.SHGFI.UseFileAttributes |
NativeMethods.Shell32.SHGFI.DisplayName |
NativeMethods.Shell32.SHGFI.TypeName;
if (linkOverlay)
{
flags |= NativeMethods.Shell32.SHGFI.LinkOverlay;
}
/* Check the size specified for return. */
if (IconSize.Small == size)
{
flags |= NativeMethods.Shell32.SHGFI.SmallIcon; // include the small icon flag
}
else
{
flags |= NativeMethods.Shell32.SHGFI.LargeIcon; // include the large icon flag
}
NativeMethods.Shell32.SHGetFileInfo(
name,
NativeMethods.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
System.Drawing.Icon icon = (System.Drawing.Icon)
System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
NativeMethods.User32.DestroyIcon(shfi.hIcon); // Cleanup
FileInfo fileInfo = new FileInfo
{
DisplayName = shfi.szDisplayName,
TypeName = shfi.szTypeName
};
if (IconSize.Small == size)
{
fileInfo.SmallIcon = icon.ToImageSource();
}
else
{
fileInfo.LargeIcon = icon.ToImageSource();
}
return(fileInfo);
}
private static FileInfo GetFolderIconInternal(IconSize size, FolderType folderType)
{
// Need to add size check, although errors generated at present!
NativeMethods.Shell32.SHGFI flags = NativeMethods.Shell32.SHGFI.Icon |
NativeMethods.Shell32.SHGFI.UseFileAttributes;
if (FolderType.Open == folderType)
{
flags |= NativeMethods.Shell32.SHGFI.OpenIcon;
}
if (IconSize.Small == size)
{
flags |= NativeMethods.Shell32.SHGFI.SmallIcon;
}
else
{
flags |= NativeMethods.Shell32.SHGFI.LargeIcon;
}
NativeMethods.Shell32.SHFILEINFO shfi;
shfi.hIcon = IntPtr.Zero;
System.Drawing.Icon icon;
try
{
// Get the folder icon
shfi = new NativeMethods.Shell32.SHFILEINFO();
int ret = NativeMethods.Shell32.SHGetFileInfo(
"empty",
NativeMethods.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
icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
}
finally
{
if (shfi.hIcon != IntPtr.Zero)
{
NativeMethods.User32.DestroyIcon(shfi.hIcon); // Cleanup
}
}
FileInfo fileInfo = new FileInfo
{
DisplayName = shfi.szDisplayName,
TypeName = shfi.szTypeName
};
if (size == IconSize.Small)
{
fileInfo.SmallIcon = icon.ToImageSource();
}
else
{
fileInfo.LargeIcon = icon.ToImageSource();
}
return(fileInfo);
}
