[Mistakenly sent to the author instead of the mail list, now re-sent.
Plus, perhaps Phil can set the `Reply-To:' flag in the configuration of
the mail list program so that replies are by default sent to the list?]
Again, I found that static members of classes are read-only when used
from the class directly, for example:
test.h:
> struct test { static int x; };
> extern test Test;
> int get();
> void set(int x);
test.cpp:
> #include "test.h"
> int test::x = 0;
> test Test;
> int get() { return Test.x; }
> void set(int x) { Test.x = x; }
test.sip:
> %Module test
> %ModuleHeaderCode
> #include "test.h"
> %End
> struct test { static int x; };
> test Test;
> int get();
> void set(int x);
test.py:
> import test
> test.get() # prints 0
> test.test.x # also prints 0
> test.Test.x # also prints 0
>
> test.set(1) # set using set function
> test.test.x # prints 1, so the [C++ -> python] data transfer
> # succeeded.
>
> test.Test.x = 2 # set using instance of class
> test.get() # prints 2, so the [python -> C++] data transfer
> # succeeded.
>
> test.test.x = 3 # set using the class directly
> test.get() # prints 2, so the [python -> C++] data transfer
> # failed.
> test.Test.x # prints 3, so `x' in the `test' class does not
> # refer to its former C++ counterpart now.
So is there a way to make the modifications via uninstantiated classe to
static members available to their C++ counterparts? Thanks very much :)
On Wed, Jul 03, 2013 at 09:30:29AM +0100, Phil Thompson wrote:
> You can't do it. Python needs to support module level descriptors for it
> to be implemented.
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