/// <summary>
/// Constructs a new instance of the FileIcon class
/// and retrieves the information specified in the
/// flags.
/// </summary>
/// <param name="fileName">The filename to get information
/// for</param>
/// <param name="flags">The flags to use when extracting the
/// icon and other shell information.</param>
public FileIcon(string fileName, FileIcon.SHGetFileInfoConstants flags)
{
this.fileName = fileName;
this.flags = flags;
GetInfo();
}
private Icon getIcon(bool large)
{
// Get icon index and path:
int iconIndex = 0;
StringBuilder iconPath = new StringBuilder(260, 260);
if (linkA == null)
{
linkW.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
else
{
linkA.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
string iconFile = iconPath.ToString();
// If there are no details set for the icon, then we must use
// the shell to get the icon for the target:
if (iconFile.Length == 0)
{
// Use the FileIcon object to get the icon:
FileIcon.SHGetFileInfoConstants flags = FileIcon.SHGetFileInfoConstants.SHGFI_ICON |
FileIcon.SHGetFileInfoConstants.SHGFI_ATTRIBUTES;
if (large)
{
flags = flags | FileIcon.SHGetFileInfoConstants.SHGFI_LARGEICON;
}
else
{
flags = flags | FileIcon.SHGetFileInfoConstants.SHGFI_SMALLICON;
}
FileIcon fileIcon = new FileIcon(Target, flags);
return fileIcon.ShellIcon;
}
else
{
// Use ExtractIconEx to get the icon:
IntPtr[] hIconEx = new IntPtr[1] {IntPtr.Zero};
int iconCount = 0;
if (large)
{
iconCount = UnManagedMethods.ExtractIconEx(
iconFile,
iconIndex,
hIconEx,
null,
1);
}
else
{
iconCount = UnManagedMethods.ExtractIconEx(
iconFile,
iconIndex,
null,
hIconEx,
1);
}
// If success then return as a GDI+ object
Icon icon = null;
if (hIconEx[0] != IntPtr.Zero)
{
icon = Icon.FromHandle(hIconEx[0]);
//UnManagedMethods.DestroyIcon(hIconEx[0]);
}
return icon;
}
}
