Fix the signature of the Q*Application constructor

Q*Application had PySequence as Parameter, although
only QStringList is accepted. That resulted in an implausible error
message when a list of, say, Integers was given.

This patch
 - replaces PySequence by QStringList (one more tuple layer),
 - fixes QCoreApplication to give the same kind of error messages,
 - renames the shiboken function sequenceToArgcArgv to listToArgcArgv
   and changes it to only allow list descendents.

We also changed signature.typing in one line to display List[str] correctly.

I think this belongs more to PySide-331, a fixed qApp.

Task-number: PYSIDE-510
Task-number: PYSIDE-331
Change-Id: Ib256c6a2db05a3db826454e1bf1b4729d59a240b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

2 files changed, 5 insertions, 5 deletions

diff --git a/sources/pyside2/PySide2/QtWidgets/glue/qapplication_init.cpp b/sources/pyside2/PySide2/QtWidgets/glue/qapplication_init.cpp
index 0de34d9c5..f1f1f84a6 100644
--- a/sources/pyside2/PySide2/QtWidgets/glue/qapplication_init.cpp
+++ b/sources/pyside2/PySide2/QtWidgets/glue/qapplication_init.cpp
@@ -51,7 +51,7 @@ bool QApplicationConstructorStart(PyObject* argv)
         return false;
     }
 
-    return Shiboken::sequenceToArgcArgv(argv, &QApplicationArgCount, &QApplicationArgValues, "PySideApp");
+    return Shiboken::listToArgcArgv(argv, &QApplicationArgCount, &QApplicationArgValues, "PySideApp");
 }
 
 void QApplicationConstructorEnd(PyObject* self)
@@ -71,8 +71,8 @@ void QApplicationConstructorEnd(PyObject* self)
 
 static void QApplicationConstructor(PyObject* self, PyObject* argv, QApplicationWrapper** cptr)
 {
-    if (QApplicationConstructorStart(argv)) {
-         // XXX do we need to support the ApplicationFlags parameter, instead of 0?
+    PyObject *stringlist = PyTuple_GET_ITEM(argv, 0);
+    if (QApplicationConstructorStart(stringlist)) {
         *cptr = new QApplicationWrapper(QApplicationArgCount, QApplicationArgValues, 0);
         Shiboken::Object::releaseOwnership(reinterpret_cast<SbkObject*>(self));
         QApplicationConstructorEnd(self);
diff --git a/sources/pyside2/PySide2/QtWidgets/typesystem_widgets_common.xml b/sources/pyside2/PySide2/QtWidgets/typesystem_widgets_common.xml
index 59412699c..5de077181 100644
--- a/sources/pyside2/PySide2/QtWidgets/typesystem_widgets_common.xml
+++ b/sources/pyside2/PySide2/QtWidgets/typesystem_widgets_common.xml
@@ -3144,9 +3144,9 @@
       <include file-name="QStyle" location="global"/>
     </extra-includes>
     <modify-function signature="QApplication(int&amp;,char**,int)" access="private" />
-    <add-function signature="QApplication(PySequence)">
+    <add-function signature="QApplication(QStringList)">
         <inject-code>
-            QApplicationConstructor(%PYSELF, %1, &amp;%0);
+            QApplicationConstructor(%PYSELF, args, &amp;%0);
         </inject-code>
     </add-function>
     <modify-function signature="exec()" rename="exec_" allow-thread="yes"/>