I'm adding a wrapper for gtk_tree_selection_selected_foreach to
gtk.overrides. So far, I have this code:
%%
override gtk_tree_selection_selected_foreach
static void
_ts_select_foreach_func(GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
/* the real Python function we want to call is hidden in the data */
/* extract that function, wrap the various data args and call it */
PyObject *compound = (PyObject *)data;
PyObject *foreach_func;
PyObject *gdata;
PyObject *pymodel;
PyObject *pypath;
PyObject *pyiter;
PyObject *result;
foreach_func = PyTuple_GET_ITEM(compound, 0);
gdata = PyTuple_GET_ITEM(compound, 1);
pymodel = pygobject_new((GObject *)model);
if (pymodel == NULL)
return;
pypath = pygobject_new((GObject *)path);
if (pypath == NULL) {
Py_DECREF(pypath);
return;
}
pyiter = pygobject_new((GObject *)iter);
if (pyiter == NULL) {
Py_DECREF(pymodel);
Py_DECREF(pypath);
return;
}
result = PyObject_CallFunction(foreach_func, "OOOO", pymodel, pypath,
pyiter, gdata);
Py_XDECREF(result);
Py_DECREF(pymodel);
Py_DECREF(pypath);
Py_DECREF(pyiter);
}
static PyObject *
_wrap_gtk_tree_selection_selected_foreach(PyGObject *self, PyObject *args)
{
PyObject *foreach_func = NULL;
PyObject *data = NULL;
PyObject *compound;
if (!PyArg_ParseTuple(args, "O|O:GtkTreeSelection.selected_foreach",
&foreach_func, &data))
return NULL;
if (data == NULL) {
data = Py_None;
}
Py_INCREF(data);
compound = Py_BuildValue("(OO)", foreach_func, data);
Py_DECREF(data);
if (compound == NULL)
return NULL;
gtk_tree_selection_selected_foreach(GTK_TREE_SELECTION(self->obj),
_ts_select_foreach_func,
(gpointer)compound);
Py_DECREF(compound);
if (PyErr_Occurred())
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
When I run my example script and select an item in a list, it segfaults a
couple of stackframes down from _ts_select_foreach_func trying to make a
pygobject out of the GtkTreePath pointer that was passed in. That object
looks reasonable when viewed from gdb:
(gdb) p *path
$2 = {
depth = 1,
indices = 0x835f1e0
}
but that's not a lot to go on.
Here's the beginning of the backtrace with the corresponding C source lines:
(gdb) bt
#0 0x401be364 in g_object_get_qdata (object=0x835f9f8, quark=46)
at gobject.c:1328
g_return_val_if_fail (G_IS_OBJECT (object), NULL);
#1 0x4019a10f in pygobject_new (obj=0x835f9f8) at gobjectmodule.c:305
if ((self = (PyGObject *)g_object_get_qdata(obj, pygobject_wrapper_key))) {
#2 0x40293c01 in _ts_select_foreach_func (model=0x82ec210, path=0x835f9f8,
iter=0xbfffdf10, data=0x82e22e4) at gtk.override:1371
pypath = pygobject_new((GObject *)path);
#3 0x4046684d in gtk_tree_selection_selected_foreach (selection=0x82e9d80,
func=0x40293bb0 <_ts_select_foreach_func>, data=0x82e22e4)
at gtktreeselection.c:401
(* func) (selection->tree_view->priv->model, path, &iter, data);
#4 0x40293dc1 in _wrap_gtk_tree_selection_selected_foreach (self=0x82f9ebc,
args=0x82da1d4) at gtk.override:1415
gtk_tree_selection_selected_foreach(GTK_TREE_SELECTION(self->obj),
I'm only operating on a simple single-column list for my initial testing.
I'd post the code that that, but it's as complex as the C code, and I think
this is more likely a problem with my C code. (The script was working using
selection.get_selected instead of selection.selected_foreach.)
Any ideas?
--
Skip Montanaro ([EMAIL PROTECTED])
http://www.mojam.com/
http://www.musi-cal.com/
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