[vtkusers] Help: Interaction Using vtkRenderWindowInteractor

[Wen-Hsing Chiang]

Hum,
It is a little tricky. Here are the steps (please correct me if I am wrong):

(1) Create an instance of vtkRenderWindowInteractor, say myRenderWindowInteractor 
(2) Create an instance of vtkRenderWindow, say myRenderWindow
(3) Link myRenderWindowInteractor and myRenderWindow together by
    myRenderWindowInteractor->SetRenderWindow(myRenderWindow);
(4) Derive a class from one of the subclasses of vtkInteractorStyle, say myInteractorStyleClass
(5) Implement your own functions, such as OnLeftButtonDown(), in MyInteractorStyleClass.
    BTW, I could not find functions such as OnLeftButtonDoubleClick(). 
    If you really want to use double-click you could work around by 
    counting the time between two calls to OnLeftButtonDown(). Or you could
    use the Timer of the interactor style. 

    Does anyone of the List have a ready-to-go implementation of OnLeftButtonDoubleClick()?

(6) Create an instance of myInteractorStyleClass, say MyInteractorStyle.
(7) Assign the interactor style to the render window interactor by
    m_myRenderWindowInteractor->SetInteractorStyle(MyInteractorStyle); 

Wen-Hsing Chiang
Irvine, California.
  



-----Original Message-----
From: vtkusers-admin at vtk.org [mailto:vtkusers-admin at vtk.org] On Behalf Of #LIU QIANG#
Sent: Thursday, September 25, 2003 10:29 PM
To: vtkusers at vtk.org
Subject: [vtkusers] Help: Interaction Using vtkRenderWindowInteractor


Hi all,

I'm new to VTK. In my C++ program, I want to interact with the vtk window. I know I can use vtkRenderWindowInteractor for this purpose. But I don't know how to get the event and how to handle it. 

For example, I want to get the position of the mouse, and impliment a function, A( ),  when the left button double clicks the window. How can I implement this?

Thanks & Best Regards,
Qiang 
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