message: fix function signatures, drop invalid casts
diff: @@ -447,8 +447,9 @@ cvImageWidget_destroy (GtkObject *object)
  #endif //GTK_VERSION3
  }
  -static void cvImageWidget_class_init (CvImageWidgetClass * klass)
  +static void cvImageWidget_class_init (gpointer g_class, gpointer /*class_data*/)
  {
  + CvImageWidgetClass* klass = (CvImageWidgetClass*)g_class;
  #if defined (GTK_VERSION3)
  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
  #else
  @@ -478,8 +479,9 @@ static void cvImageWidget_class_init (CvImageWidgetClass * klass)
  }
  static void
  -cvImageWidget_init (CvImageWidget *image_widget)
  +cvImageWidget_init(GTypeInstance* instance, gpointer /*g_class*/)
  {
  + CvImageWidget* image_widget = (CvImageWidget*)instance;
  image_widget->original_image=0;
  image_widget->scaled_image=0;
  image_widget->flags=0;
  @@ -494,9 +496,9 @@ GType cvImageWidget_get_type (void){
  GTK_TYPE_WIDGET,
  (gchar*) "CvImageWidget",
  sizeof(CvImageWidgetClass),
  - (GClassInitFunc) cvImageWidget_class_init,
  + cvImageWidget_class_init,
  sizeof(CvImageWidget),
  - (GInstanceInitFunc) cvImageWidget_init,
  + cvImageWidget_init,
  (GTypeFlags)0
  );
  }
  @@ -590,7 +592,7 @@ static gboolean icvOnMouse( GtkWidget *widget, GdkEvent *event, gpointer user_da
  #ifdef HAVE_GTHREAD
  int thread_started=0;
  -static gpointer icvWindowThreadLoop();
  +static gpointer icvWindowThreadLoop(gpointer data);
  GMutex* last_key_mutex = NULL;
  GCond* cond_have_key = NULL;
  GMutex* window_mutex = NULL;
  @@ -640,10 +642,10 @@ CV_IMPL int cvStartWindowThread(){
  #if !GLIB_CHECK_VERSION(2, 32, 0)
  // this is the window update thread
  - window_thread = g_thread_create((GThreadFunc) icvWindowThreadLoop,
  + window_thread = g_thread_create(icvWindowThreadLoop,
  NULL, TRUE, NULL);
  #else
  - window_thread = g_thread_new("OpenCV window update", (GThreadFunc)icvWindowThreadLoop, NULL);
  + window_thread = g_thread_new("OpenCV window update", icvWindowThreadLoop, NULL);
  #endif
  }
  thread_started = window_thread!=NULL;
  @@ -654,7 +656,7 @@ CV_IMPL int cvStartWindowThread(){
  }
  #ifdef HAVE_GTHREAD
  -gpointer icvWindowThreadLoop()
  +gpointer icvWindowThreadLoop(gpointer /*data*/)
  {
  while(1){
  g_mutex_lock(window_mutex);
  