IVuPy Manual

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3.7.1 Single Callbacks

SoQtRenderArea is a class using a single callback and its use is demonstrated by examples/Mentor/10_2_setEventCB.py and the ``better style'' examples/Mentor/10_2iv_setEventCB.py.

Usage examples are:

1. To set a callback function and data:

   myRenderArea.setEventCallback(
       myAppEventHandler, CallbackData(myTicker, myRenderArea))
   

2. To set a callback function without data (in C++ the second argument is sometimes optional, but IVuPy always requires a second None argument):

   myRenderArea.setEventCallback(myAppEventHandler, None)
   

3. To disable a callback function:

   myRenderArea.setEventCallback(None, None)
   

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IVuPy Manual

Previous: 3.7 Callbacks Up: 3.7 Callbacks Next: 3.7.2 Callback Lists

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Release cvs, documentation updated on April 5, 2006. Hosted on