/// <summary>
/// Release all resources used by <see cref="StockIcon" /> class,
/// and optionally releases managed resources.
/// </summary>
/// <param name="disposing">
/// <c>true</c> to release both managed and unmanaged resources.
/// <c>false</c> to release only unmanaged resources.
/// </param>
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
}
// Release unmanaged resources.
StockIconsNativeMethods.DestroyIcon(this.hIcon);
this.hIcon = IntPtr.Zero;
this.disposed = true;
}
}
private IntPtr GetHIcon()
{
var flags = SHGSI.SHGSI_ICONLOCATION;
if (this.Size == StockIconSize.Small)
{
flags |= SHGSI.SHGSI_SMALLICON;
}
else if (this.Size == StockIconSize.ShellSize)
{
flags |= SHGSI.SHGSI_SHELLICONSIZE;
}
else
{
flags |= SHGSI.SHGSI_LARGEICON;
}
if (this.Selected)
{
flags |= SHGSI.SHGSI_SELECTED;
}
if (this.LinkOverlay)
{
flags |= SHGSI.SHGSI_LINKOVERLAY;
}
var info = SHSTOCKICONINFO.Create();
var hr = StockIconsNativeMethods.SHGetStockIconInfo(this.Id, flags, ref info);
if (hr != COMErrorCodes.S_OK)
{
if (hr == COMErrorCodes.E_INVALIDARG)
{
throw new InvalidOperationException(
string.Format(CultureInfo.InvariantCulture,
ErrorMessages.StockIconInvalidGuid,
this.Id));
}
return(IntPtr.Zero);
}
return(info.hIcon);
}