Hi all. Newbie question. I have piece of a long C++ algorithm. i would like to create a GUI for it using Python. I've played around a bit with boost::python, and it seems to work nicely. My problem is this: I can call the wrapped C++ functions with ease from the python script, however, sometimes i need the C++ code to interact with the GUI. For example i would like the C++ code to be able to update an image in the GUI or to print some text. I do not know how to do so. I guess i could break stuff to smaller functions and let python call each of them and use their returned values to update the interface, however, i would like to make it more of an event driven design. In addition, in my particular case, the GUI is for a debug purposes. Making the C++ code to interact with the GUI, will save me lots of development time. is there an elegant method to accomplish that? thanks all.

You can pass Python objects to C++ as boost::python::object's. From there you can use attr() to get access to individual members of the object such as methods. If you want a specific example, try posting something that you're trying to do.

Quote:Original post by SiCrane
You can pass Python objects to C++ as boost::python::object's. From there you can use attr() to get access to individual members of the object such as methods. If you want a specific example, try posting something that you're trying to do.

thanks SiCrane.
is that the common design approach for such task?
if not, what is the proper design approach i should go for?
(by "task", i mean using another higher level interpreted language for a UI)

are there any documentation or code examples for what I'm trying to do i can look at?

please feel free to tell me I'm going totally in the wrong direction. I'm mainly guessing here about how i should approach the problem. :)

I dont have the exact C++ code yet, but what i had in mind, is some image processing algorithm, with various steps. I would like that each step will display the current temporary image in the UI for debug purposes. So, i can see in the UI, all the temp images of the different stages together on screen.

There really is no "best" in the case of talking about binding arbitrary high level and low level languages. Passing a python object to C++ is probably what I would do in the specific case of C++/Python, but if I was using a C# GUI with C on Windows, I might just pass a HWND from C# and use SendMessage() in C.