PySide::MetaFunction::call: Fix error message about number of arguments

Split into branches for too many/too few and subtract return type.

Task-number: PYSIDE-462
Change-Id: I25fbbd4fd18e87c7d9b3cb79b8c2c16e1e816fac
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/libpyside/pysidemetafunction.cpp b/libpyside/pysidemetafunction.cpp
index 543569c8..039db513 100644
--- a/libpyside/pysidemetafunction.cpp
+++ b/libpyside/pysidemetafunction.cpp
@@ -163,8 +163,17 @@ bool call(QObject* self, int methodIndex, PyObject* args, PyObject** retVal)
     Shiboken::AutoDecRef sequence(PySequence_Fast(args, 0));
     int numArgs = PySequence_Fast_GET_SIZE(sequence.object()) + 1;
 
-    if (numArgs - 1 != argTypes.count()) {
-        PyErr_Format(PyExc_TypeError, "%s only accepts %d arguments, %d given!", method.methodSignature().constData(), argTypes.count(), numArgs);
+    if (numArgs - 1 > argTypes.count()) {
+        PyErr_Format(PyExc_TypeError, "%s only accepts %d argument(s), %d given!",
+                     method.methodSignature().constData(),
+                     argTypes.count(), numArgs - 1);
+        return false;
+    }
+
+    if (numArgs - 1 < argTypes.count()) {
+        PyErr_Format(PyExc_TypeError, "%s needs %d argument(s), %d given!",
+                     method.methodSignature().constData(),
+                     argTypes.count(), numArgs - 1);
         return false;
     }