/// <summary>Gets the system icon for the given file name or extension.</summary>
/// <param name="fileNameOrExtension">The file name or extension.</param>
/// <param name="iconSize">Size of the icon.</param>
/// <returns>An <see cref="Icon"/> instance if found; otherwise <see langword="null"/>.</returns>
public static Icon GetSystemIcon(string fileNameOrExtension, ShellImageSize iconSize = ShellImageSize.Large)
{
var shfi = new SHFILEINFO();
var hImageList = SHGetFileInfo(fileNameOrExtension, 0, ref shfi, shfiSz, SHGFI.SHGFI_SYSICONINDEX | (iconSize == ShellImageSize.Small ? SHGFI.SHGFI_SMALLICON : 0));
if (hImageList == IntPtr.Zero)
{
return(null);
}
if (iconSize <= ShellImageSize.Small)
{
return(IconLocation.GetClonedIcon(ImageList_GetIcon(hImageList, shfi.iIcon, IMAGELISTDRAWFLAGS.ILD_TRANSPARENT)));
}
SHGetImageList((SHIL)iconSize, typeof(IImageList).GUID, out var il).ThrowIfFailed();
return(IconLocation.GetClonedIcon(il.GetIcon(shfi.iIcon, IMAGELISTDRAWFLAGS.ILD_TRANSPARENT)));
}
/// <summary>Gets the system icon for the given file name or extension.</summary>
/// <param name="fileNameOrExtension">The file name or extension.</param>
/// <param name="iconSize">Size of the icon.</param>
/// <returns>An <see cref="Icon"/> instance if found; otherwise <see langword="null"/>.</returns>
public static Icon GetSystemIcon(string fileNameOrExtension, ShellImageSize iconSize = ShellImageSize.Large)
{
var shfi = new SHFILEINFO();
if (hSystemImageList.IsNull)
{
hSystemImageList = SHGetFileInfo(fileNameOrExtension, 0, ref shfi, SHFILEINFO.Size, SHGFI.SHGFI_SYSICONINDEX | (iconSize == ShellImageSize.Small ? SHGFI.SHGFI_SMALLICON : 0));
}
if (hSystemImageList.IsNull)
{
return(null);
}
if (iconSize <= ShellImageSize.Small)
{
return(ImageList_GetIcon(hSystemImageList, shfi.iIcon, IMAGELISTDRAWFLAGS.ILD_TRANSPARENT).ToIcon());
}
return(GetSystemIcon(shfi.iIcon, iconSize));
}
/// <summary>Given an image list size, return the related size, in pixels, of that size defined on the system.</summary> /// <param name="imageListSize">Size of the image list.</param> /// <returns>Pixel size of corresponding system value.</returns> public static int SHILtoPixels(ShellImageSize imageListSize) => g_rgshil[imageListSize];
/// <summary>Gets the system icon for and index and size.</summary>
/// <param name="index">The index of the system icon to retrieve.</param>
/// <param name="iconSize">Size of the icon.</param>
/// <returns>An <see cref="Icon"/> instance if found; otherwise <see langword="null"/>.</returns>
public static SafeHICON GetSystemIconHandle(int index, ShellImageSize iconSize = ShellImageSize.Large)
{
SHGetImageList((SHIL)iconSize, typeof(IImageList).GUID, out var il).ThrowIfFailed();
return(il.GetIcon(index, IMAGELISTDRAWFLAGS.ILD_TRANSPARENT));
}
/// <summary>Gets the system icon for and index and size.</summary> /// <param name="index">The index of the system icon to retrieve.</param> /// <param name="iconSize">Size of the icon.</param> /// <returns>An <see cref="Icon"/> instance if found; otherwise <see langword="null"/>.</returns> public static Icon GetSystemIcon(int index, ShellImageSize iconSize = ShellImageSize.Large) => GetSystemIconHandle(index, iconSize)?.ToIcon();
/// <summary>Gets the system icon for and index and size.</summary> /// <param name="index">The index of the system icon to retrieve.</param> /// <param name="iconSize">Size of the icon.</param> /// <returns>An <see cref="SafeHICON"/> instance if found; otherwise <see langword="null"/>.</returns> public static SafeHICON GetSystemIcon(int index, ShellImageSize iconSize = ShellImageSize.Large) => GetSystemIconHandle(index, iconSize);
/// <summary>Given an image list size, return the related size, in pixels, of that size defined on the system.</summary> /// <param name="imageListSize">Size of the image list.</param> /// <returns>Pixel size of corresponding system value.</returns> public static int SHILtoPixels(ShellImageSize imageListSize) => ShellUtil.SHILToPixels((SHIL)imageListSize);
