public static extern ReturnCode DsmWinNew(
[In, Out] TWIdentity origin,
[In, Out] TWIdentity destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
[In, Out] TWExtImageInfo data);
public static ReturnCode DsmEntry(
TWIdentity origin,
TWIdentity destination,
Message msg,
TWExtImageInfo data)
{
if (PlatformInfo.Current.IsWindows)
{
if (PlatformInfo.Current.UseNewWinDSM)
{
return(NativeMethods.DsmWinNew(origin, destination, DataGroups.Image, DataArgumentType.ExtImageInfo, msg, data));
}
else
{
return(NativeMethods.DsmWinOld(origin, destination, DataGroups.Image, DataArgumentType.ExtImageInfo, msg, data));
}
}
else if (PlatformInfo.Current.IsLinux)
{
return(NativeMethods.DsmLinux(origin, destination, DataGroups.Image, DataArgumentType.ExtImageInfo, msg, data));
}
throw new PlatformNotSupportedException();
}
/// <summary>
/// Gets the extended image information if applicable.
/// </summary>
/// <param name="infoIds">The information ids.</param>
/// <returns></returns>
/// <exception cref="System.InvalidOperationException"></exception>
public IEnumerable <TWInfo> GetExtImageInfo(params ExtendedImageInfo[] infoIds)
{
if (infoIds != null && infoIds.Length > 0)// && DataSource.SupportedCaps.Contains(CapabilityId.ICapExtImageInfo))
{
var request = new TWExtImageInfo {
NumInfos = (uint)infoIds.Length
};
if (infoIds.Length > request.Info.Length)
{
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "Info ID array exceeded maximum length of {0}.", request.Info.Length));
}
for (int i = 0; i < infoIds.Length; i++)
{
request.Info[i].InfoID = infoIds[i];
}
if (DataSource.DGImage.ExtImageInfo.Get(request) == ReturnCode.Success)
{
return(request.Info.Where(it => it.InfoID != ExtendedImageInfo.Invalid));
}
}
return(Enumerable.Empty <TWInfo>());
}
/// <summary>
/// This operation is used by the application to query the data source for extended image attributes.
/// The application is responsible for creating and disiposing the info object.
/// </summary>
/// <param name="info">The information.</param>
/// <returns></returns>
public ReturnCode Get(TWExtImageInfo info)
{
Session.VerifyState(7, 7, DataGroups.Image, DataArgumentType.ExtImageInfo, Message.Get);
return(Dsm.DsmEntry(Session.AppId, Session.CurrentSource.Identity, Message.Get, info));
}