2 files changed, 21 insertions, 1 deletions
diff --git a/sources/pyside6/libpyside/pysidesignal.cpp b/sources/pyside6/libpyside/pysidesignal.cpp
index faa6fdce1..276da1cad 100644
--- a/sources/pyside6/libpyside/pysidesignal.cpp
+++ b/sources/pyside6/libpyside/pysidesignal.cpp
@@ -733,6 +733,12 @@ bool checkType(PyObject *pyObj)
     return false;
 }
 
+bool checkInstanceType(PyObject *pyObj)
+{
+    return pyObj != nullptr
+        && PyType_IsSubtype(Py_TYPE(pyObj), PySideSignalInstanceTypeF()) != 0;
+}
+
 void updateSourceObject(PyObject *source)
 {
     PyTypeObject *objType = reinterpret_cast<PyTypeObject *>(PyObject_Type(source));
diff --git a/sources/pyside6/libpyside/pysidesignal.h b/sources/pyside6/libpyside/pysidesignal.h
index 55e1ee405..edef37af1 100644
--- a/sources/pyside6/libpyside/pysidesignal.h
+++ b/sources/pyside6/libpyside/pysidesignal.h
@@ -72,7 +72,21 @@ extern "C"
 namespace PySide {
 namespace Signal {
 
-PYSIDE_API bool checkType(PyObject *type);
+/**
+ * This function checks for the PySideSignal type.
+ *
+ * @param   pyObj
+ * @return  whether pyObj is a PySideSignal
+ **/
+PYSIDE_API bool checkType(PyObject *pyObj);
+
+/**
+ * This function checks for the PySideSignalInstanceType type.
+ *
+ * @param   pyObj
+ * @return  Whether pyObj is a PySideSignalInstance
+ **/
+PYSIDE_API bool checkInstanceType(PyObject *pyObj);
 
 /**
  * Register all C++ signals of a QObject on Python type.