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improved wrapper check to avoid crashes on virtual methods while python object gets deleted...
improved wrapper check to avoid crashes on virtual methods while python object gets deleted git-svn-id: svn://svn.code.sf.net/p/pythonqt/code/trunk@245 ea8d5007-eb21-0410-b261-ccb3ea6e24a9

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CPPPyWrapperExample.cpp
45 lines | 2.0 KiB | text/x-c | CppLexer
#include <PythonQt.h>
#include <QtGui>
int main (int argc, char* argv[]) {
QApplication app(argc, argv);
PythonQt::init();
PythonQtObjectPtr mainModule = PythonQt::self()->getMainModule();
mainModule.evalScript(QString("import sys\n"));
Q_ASSERT(!mainModule.isNull());
{
// evaluate a python file embedded in executable as resource:
mainModule.evalFile(":eyed3tagger.py");
// create an object, hold onto its reference
PythonQtObjectPtr tag = mainModule.evalScript("EyeD3Tagger()\n", Py_eval_input);
Q_ASSERT(!tag.isNull());
tag.call("setFileName", QVariantList() << "t.mp3");
QVariant fn = tag.call("fileName", QVariantList());
Q_ASSERT(fn.toString() == QString("t.mp3"));
// tag goes out of scope, reference count decremented.
}
{
// Allow the python system path to recognize QFile paths in the sys.path
PythonQt::self()->setImporter(NULL);
// append the Qt resource root directory to the sys.path
mainModule.evalScript("sys.path.append(':')\n");
mainModule.evalScript("import eyed3tagger\n");
PythonQtObjectPtr tag = mainModule.evalScript("eyed3tagger.EyeD3Tagger()\n", Py_eval_input);
Q_ASSERT(!tag.isNull());
tag.call("setFileName", QVariantList() << "t.mp3");
QVariant fn = tag.call("fileName", QVariantList());
Q_ASSERT(fn.toString() == QString("t.mp3"));
}
{ // alternative using import and loading it as a real module from sys.path
// import sys first
mainModule.evalScript(QString("sys.path.append('%1')\n").arg(QDir::currentPath()));
mainModule.evalScript("import eyed3tagger\n");
PythonQtObjectPtr tag = mainModule.evalScript("eyed3tagger.EyeD3Tagger()\n", Py_eval_input);
Q_ASSERT(!tag.isNull());
tag.call("setFileName", QVariantList() << "t.mp3");
QVariant fn = tag.call("fileName", QVariantList());
Q_ASSERT(fn.toString() == QString("t.mp3"));
}
qDebug() << "finished";
return 0;
}