/// <summary>
/// Connect to E3.series process
/// </summary>
/// <param name="connectorSelectionDialog">Implementation of Selection Dialog
/// (used in case of multiple running E3.series instances)</param>
/// <returns>Wrapped e3Application COM object</returns>
protected IApplication Connect(IConnectorSelectionDialog connectorSelectionDialog)
{
var comObject = GetProcess(connectorSelectionDialog);
return(comObject != null
? new E3Application(comObject)
: null);
}
/// <summary>
/// Get E3.series COM object
/// </summary>
/// <param name="connectorSelectionDialog">Selection dialog for multiple running instances of E3.series</param>
/// <returns></returns>
private static object GetProcess(IConnectorSelectionDialog connectorSelectionDialog = null)
{
var processes = Dispatcher.GetRunningE3SeriesApplications();
if (processes.Count == 0)
{
return(null);
}
if (processes.Count == 1)
{
return(processes.First().Value);
}
// If multiple instances of E3.series, try to connect to foreground process
IntPtr hWnd = GetForegroundWindow();
int curPid;
GetWindowThreadProcessId(hWnd, out curPid);
if (Process.GetProcessById(curPid).ProcessName == Assembly.GetEntryAssembly().GetName().Name)
{
IntPtr targetHwnd = GetWindow(Process.GetCurrentProcess().MainWindowHandle,
(uint)GetWindowCmd.GW_HWNDNEXT);
while (true)
{
IntPtr temp = GetParent(targetHwnd);
if (temp.Equals(IntPtr.Zero))
{
break;
}
targetHwnd = temp;
}
GetWindowThreadProcessId(targetHwnd, out curPid);
}
if (Process.GetProcessById(curPid).ProcessName == "E3.series")
{
return(GetProcess(Process.GetProcessById(curPid).Id));
}
// If connection to foreground window fails,
// then show selection dialog (if exists) or throw exception
if (connectorSelectionDialog == null)
{
throw new NotImplementedException(
"Multiple running E3.series processes. Bring needed E3.series instance on top and restart application or implement connectorSelectionDialog in your application");
}
object selectedProcess;
var result = connectorSelectionDialog.ShowDialog(processes, out selectedProcess);
return(result ? selectedProcess : null);
}
public override IApplication Connect(IConnectorSelectionDialog connectorSelectionDialog)
{
return(base.Connect(connectorSelectionDialog));
}