Avoid deprecated gtk_text_iter_begins_tag()

include/wx/gtk/private/gtk3-compat.h

@@ -10,10 +10,23 @@
 #ifndef _WX_GTK_PRIVATE_COMPAT3_H_
 #define _WX_GTK_PRIVATE_COMPAT3_H_
 
-#if defined(__WXGTK3__)
-
 wxGCC_WARNING_SUPPRESS(deprecated-declarations)
 
+#ifndef __WXGTK4__
+
+// ----------------------------------------------------------------------------
+// the following were introduced in GTK+ 3.20
+
+static inline gboolean wx_gtk_text_iter_starts_tag(const GtkTextIter* iter, GtkTextTag* tag)
+{
+    return gtk_text_iter_begins_tag(iter, tag);
+}
+#define gtk_text_iter_starts_tag wx_gtk_text_iter_starts_tag
+
+#endif // !__WXGTK4__
+
+#ifdef __WXGTK3__
+
 // ----------------------------------------------------------------------------
 // the following were introduced in GTK+ 3.12
 
@@ -29,7 +42,8 @@ static inline void wx_gtk_widget_set_margin_end(GtkWidget* widget, gint margin)
 }
 #define gtk_widget_set_margin_end wx_gtk_widget_set_margin_end
 
+#endif // __WXGTK3__
+
 wxGCC_WARNING_RESTORE()
 
-#endif // __WXGTK3__
 #endif // _WX_GTK_PRIVATE_COMPAT3_H_

src/gtk/textctrl.cpp

@@ -32,6 +32,7 @@
 #include <gtk/gtk.h>
 #include "wx/gtk/private.h"
 #include "wx/gtk/private/gtk2-compat.h"
+#include "wx/gtk/private/gtk3-compat.h"
 
 // ----------------------------------------------------------------------------
 // helpers
@@ -2006,7 +2007,7 @@ void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
     SetCursor(wxCursor(wxCURSOR_HAND));
 
     start = end;
-    if(!gtk_text_iter_begins_tag(&start, tag))
+    if (!gtk_text_iter_starts_tag(&start, tag))
         gtk_text_iter_backward_to_tag_toggle(&start, tag);
     if(!gtk_text_iter_ends_tag(&end, tag))
         gtk_text_iter_forward_to_tag_toggle(&end, tag);