diff --git a/include/wx/gdicmn.h b/include/wx/gdicmn.h
index e6368d8ff2..24ff44ab5c 100644
--- a/include/wx/gdicmn.h
+++ b/include/wx/gdicmn.h
@@ -255,6 +255,13 @@ public:
         { if ( sz.x > x ) x = sz.x; if ( sz.y > y ) y = sz.y; }
     void DecTo(const wxSize& sz)
         { if ( sz.x < x ) x = sz.x; if ( sz.y < y ) y = sz.y; }
+    void DecToIfSpecified(const wxSize& sz)
+    {
+        if ( sz.x != wxDefaultCoord && sz.x < x )
+            x = sz.x;
+        if ( sz.y != wxDefaultCoord && sz.y < y )
+            y = sz.y;
+    }
 
     void IncBy(int dx, int dy) { x += dx; y += dy; }
     void IncBy(const wxPoint& pt);
diff --git a/interface/wx/gdicmn.h b/interface/wx/gdicmn.h
index f043636096..f69ace97be 100644
--- a/interface/wx/gdicmn.h
+++ b/interface/wx/gdicmn.h
@@ -873,6 +873,18 @@ public:
     */
     void DecTo(const wxSize& size);
 
+    /**
+        Decrements this object to be not bigger than the given size ignoring
+        non-specified components.
+
+        This is similar to DecTo() but doesn't do anything for x or y
+        component if the same component of @a size is not specified, i.e. set
+        to ::wxDefaultCoord.
+
+        @since 2.9.5
+     */
+    void DecToIfSpecified(const wxSize& size);
+
     /**
         Gets the height member.
     */