public List <T> GetAllComInstancesFromROT <T>(COMObjectsHelper comHelper)
{
var objects = new List <T>();
CreateBindCtx(0, out var bindCtx);
if (bindCtx == null)
{
return(objects);
}
comHelper.Register(() => bindCtx);
bindCtx.GetRunningObjectTable(out var rot);
if (rot == null)
{
return(objects);
}
comHelper.Register(() => rot);
rot.EnumRunning(out var enumMoniker);
comHelper.Register(() => enumMoniker);
enumMoniker.Reset();
var fetched = IntPtr.Zero;
var moniker = comHelper.Register(() => new IMoniker[1]);
while (enumMoniker.Next(1, moniker, fetched) == 0)
{
moniker[0].GetDisplayName(bindCtx, null, out var displayName);
var hresult = rot.GetObject(moniker[0], out var obj);
// Note: In case when retrieval operation was not succeed just skip further actions.
if (hresult != 0)
{
Console.WriteLine($"Retrieve COM object failed with result: {hresult}");
continue;
}
comHelper.Register(() => obj);
try
{
if (obj is T)
{
objects.Add((T)obj);
}
}
catch (Exception ex)
{
Console.WriteLine($"Could not get instance of COM object because of: {ex.Message}");
Console.WriteLine(ex);
}
}
return(objects);
}
public static List <T> GetActiveInteropApp <T>(COMObjectsHelper comHelper, string interopAppName)
{
return(Wait.ForResult(() =>
{
try
{
var comObject = Marshal.GetActiveObject(interopAppName);
if (comObject == null)
{
return null;
}
comHelper.Register(() => comObject);
return new List <T> {
(T)comObject
};
}
catch (ElementNotAvailableException ex)
{
Console.WriteLine($"Exception thrown during getting '{interopAppName}' active interop object.");
Console.WriteLine(ex);
return null;
}
catch (COMException ex)
{
Console.WriteLine($"Exception thrown during getting '{interopAppName}' active interop object.");
Console.WriteLine(ex);
var comInstancesFromROT = comHelper.GetAllComInstancesFromROT <T>(comHelper);
if (comInstancesFromROT.Count == 0)
{
return null;
}
return comInstancesFromROT;
}
},
timeoutMilliSeconds: 60000,
retryRateDelayMilliSeconds: 5000));
}
