Handling multiple events simultaneously.

Hi,
I have a window with a CNiGraph inside. In the graph I have multple traces. I have a toolbar which has the following buttons:
* Pan
* Zoom Area
* ZoomX
* ZoomY
* Range mark
* Add annotation
When the user clicks a toolbar item I have to change the Tracking mode to the appropriate mode, eg
if (m_nMode == 0)
m_Graph2D.SetTrackMode(CNiGraph::TrackAllEvents);
else if (m_nMode == 1)
m_Graph2D.SetTrackMode(CNiGraph::TrackPanPlotAreaXY);
else if(m_nMode == 2)
m_Graph2D.SetTrackMode(CNiGraph::TrackZoomRectXY );
else if(m_nMode == 3)
m_Graph2D.SetTrackMode(CNiGraph::TrackZoomRectX);
else if(m_nMode == 4)
m_Graph2D.SetTrackMode(CNiGraph::TrackZoomRectY);
else if(m_nMode == 5)
m_Graph2D.SetTrackMode
(CNiGraph::TrackDragCursor);
else if (m_nMode == 6)
m_Graph2D.SetTrackMode(CNiGraph::TrackDragAnnotation)
My problem is the following. If the user has a cursor displayed and wants to zoom I set the trackmode, however if after the zoom he wants to move the cursor I have to change the trackmode. Is there a way to have multiple trackmodes at the same time. Meaning if the user creates a rectangle for zooming it zooms however if the user starts dragging an annotation or a cursor it will respond to that.
Since if I change to TrackAllEvents it will not track my cursor or my annotations, since the events are never fired.
Please help,
Thanks
Miklos

The Measurement Studio C++ graph does not support enabling multiple interaction modes. As you suggest, the way to do this is to have a toolbar, in which the user can select the interaction mode that he or she wants.
On a side note, the Measurement Studio .NET graph does support enabling multiple interaction modes. However, using the Measurement Studio .NET graph would require that you use a managed language (e.g. C#, VB.NET, Managed C++) for your user interface.

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Message was edited by:
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Hi,
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I wanna know handling multiple sessionbean simultanously like threadProgramming

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sorry for my poor english...
i wait your answer, bye ~~

Use asynchronous programming, like JMS, MDBs. Use 2 queues: one for input,
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This method is a grey area and may not be portable.
Emmanuel
"JeongGil Choi" <[email protected]> wrote in message
news:[email protected]..
>
I should like to get return value through processing three sessionbean
simultaneously in EJB like Thread Programing in normal programming.
Simple for example...
SimpleManager
simpleMethod(String id)
// this part must be done like multithread programming...
String a = aRemote.get(id);
String b = bRemote.get(id);
String c = cRemote.get(id);
return a+b+c;
*) here, SimpleManager, aRemote, bRemote, cRemote is SessionBean
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i know to call these remote sessionbean simultaneously, not step by steplike
multithread programming .
(jsp
-> call sessionbean
-> call multiple sessionbeans like thread programming
-> summing data
-> return)
And after all is done, i must know each return value. (a, b, c...)
I wanna know how to find solution.
Because it is not recommended to use Thread in EJB...
sorry for my poor english...
i wait your answer, bye ~~

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Multiple event handling

hi ,
Please can i have the soultion for the problem which i am facing.
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Hello,
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natasftw wrote:
Or as others mentioned, make two parallel loops. In one loop, have your state machine. In the other, have just the Event Handler. Pass the events from the handler to the state machine by way of queues.
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Best way to handle several events that may occur simultaneosly

Hi all,
I have an application vi in which I need to take care of several user generated events like menu bar selections, mouse clicks on controls (both single & double clicks) and many more.Also, all these events can occur simultaneously.Which would be the best method or architecture to handle all these events with ease?..All suggestions are welcome.
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mnx wrote:
[..] several user generated events like menu bar selections, mouse clicks on controls (both single & double clicks) and many more.Also, all these events can occur simultaneously.[...]
Hm, can you enlighten us how a user will create these events simultaneously?
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rossu wrote:
If they are in sperate while loops will they both run. If they are in one loop will the loop recycle if one structue is still waiting for an event to occur?
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Event Structure: Multiple Events ??

All
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Edit your event and make sure to uncheck "Lock front panel until the event case for this event completes", else you won't be able to do much.
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LabVIEW Champion . Do more with less code and in less time .
Attachments:
2events.vi ‏42 KB

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