/// <summary>
/// Constructor taking the datasourcemanager and the datasource which shall process a windows message
/// </summary>
/// <param name="dataSourceManager"></param>
/// <param name="dataSource"></param>
internal Event(DataSourceManager dataSourceManager, DataSource dataSource)
{
interopStruct = new EventInterop ();
interopStruct.WindowsMessagePointer = Marshal.AllocHGlobal (Marshal.SizeOf (windowsMessage));
windowsMessage = new WindowsMsg ();
this.dataSourceManager = dataSourceManager;
this.dataSource = dataSource;
}
private static extern ReturnCodes DataSourceEvent(
[In, Out] Identity origin,
[In, Out] Identity destination,
DataGroups dataGroup,
DataAttributeTypes dataAttributeType,
Messages message,
ref EventInterop eventReply);
/// <summary>
/// Routes a windowsmessage to the twaindriver which translate into a twainmessage
/// </summary>
/// <param name="applicationIdentity">Identity of the application</param>
/// <param name="dataSourceIdentity">Identity of the datasource</param>
/// <param name="eventMessage"></param>
/// <returns>Reply of the twaindriver</returns>
internal static ReturnCodes ProcessMessage(
Identity applicationIdentity,
Identity dataSourceIdentity,
ref EventInterop eventMessage)
{
return DataSourceEvent (
applicationIdentity,
dataSourceIdentity,
DataGroups.Control,
DataAttributeTypes.Event,
Messages.ProcessEvent,
ref eventMessage);
}