diff --git a/include/wx/utils.h b/include/wx/utils.h
index b539373de9..9d254ca589 100644
--- a/include/wx/utils.h
+++ b/include/wx/utils.h
@@ -588,14 +588,14 @@ WXDLLIMPEXP_BASE bool wxGetDiskSpace(const wxString& path,
 
 
 
-extern "C"
-{
-typedef int (wxCMPFUNC_CONV *CMPFUNCDATA)(const void* pItem1, const void* pItem2, const void* user_data);
-}
+typedef int (*wxSortCallback)(const void* pItem1,
+                              const void* pItem2,
+                              const void* user_data);
 
 
-WXDLLIMPEXP_BASE void wxQsort(void *const pbase, size_t total_elems,
-                              size_t size, CMPFUNCDATA cmp, const void* user_data);
+WXDLLIMPEXP_BASE void wxQsort(void* pbase, size_t total_elems,
+                              size_t size, wxSortCallback cmp,
+                              const void* user_data);
 
 
 #if wxUSE_GUI // GUI only things from now on
diff --git a/include/wx/vector.h b/include/wx/vector.h
index 8cf76d9ff6..e95d4103ef 100644
--- a/include/wx/vector.h
+++ b/include/wx/vector.h
@@ -457,7 +457,7 @@ namespace wxPrivate
 template<typename T>
 struct wxVectorComparator
 {
-    static int wxCMPFUNC_CONV
+    static int
     Compare(const void* pitem1, const void* pitem2, const void* )
     {
         const T& item1 = *reinterpret_cast<const T*>(pitem1);
diff --git a/interface/wx/utils.h b/interface/wx/utils.h
index 120ed37cc3..fc02d7594f 100644
--- a/interface/wx/utils.h
+++ b/interface/wx/utils.h
@@ -496,19 +496,19 @@ void wxPostDelete(wxObject* object);
 
     @header{wx/utils.h}
 */
-extern "C"
-{
-typedef int (wxCMPFUNC_CONV *CMPFUNCDATA)(const void* pItem1, const void* pItem2, const void* user_data);
-}
+typedef int (*wxSortCallback)(const void* pItem1, const void* pItem2, const void* user_data);
 
 /**
-    Function for performing a qsort operation including a user data
-    parameter.
+    Function implementing quick sort algorithm.
+
+    This function sorts @a total_elems objects of size @a size located at @a
+    pbase. It uses @a cmp function for comparing them and passes @a user_data
+    pointer to the comparison function each time it's called.
 
     @header{wx/utils.h}
 */
-void wxQsort(void *const pbase, size_t total_elems,
-             size_t size, CMPFUNCDATA cmp, const void* user_data);
+void wxQsort(void* pbase, size_t total_elems,
+             size_t size, wxSortCallback cmp, const void* user_data);
 
 
 /**
diff --git a/src/common/utilscmn.cpp b/src/common/utilscmn.cpp
index 17b6eb5879..389c87769b 100644
--- a/src/common/utilscmn.cpp
+++ b/src/common/utilscmn.cpp
@@ -815,7 +815,7 @@ typedef struct
       stack size is needed (actually O(1) in this case)!  */
 
 void wxQsort(void *const pbase, size_t total_elems,
-                             size_t size, CMPFUNCDATA cmp, const void* user_data)
+             size_t size, wxSortCallback cmp, const void* user_data)
 {
   register char *base_ptr = (char *) pbase;
   const size_t max_thresh = MAX_THRESH * size;