Make wxAuiNotebook wxAuiTabCtrl-related methods public

Allow retrieving the active tab control or tab at the given position.

Closes #16262.

interface/wx/aui/auibook.h

@@ -405,6 +405,29 @@ public:
         Returns the image index for the given page.
     */
     virtual int GetPageImage(size_t nPage) const;
+
+    /**
+        Returns tab control based on point coordinates inside the tab frame.
+
+        @since 3.1.4
+    */
+    wxAuiTabCtrl* GetTabCtrlFromPoint(const wxPoint& pt);
+
+    /**
+        Returns active tab control for this notebook.
+
+        @since 3.1.4
+    */
+    wxAuiTabCtrl* GetActiveTabCtrl();
+
+    /**
+        Finds tab control associated with a given window and its tab index.
+
+        @return @true when the tab control is found, @false otherwise.
+
+        @since 3.1.4
+    */
+    bool FindTab(wxWindow* page, wxAuiTabCtrl** ctrl, int* idx);
 };