diff --git a/include/wx/gdicmn.h b/include/wx/gdicmn.h
index d366d4e664..f7d39c017b 100644
--- a/include/wx/gdicmn.h
+++ b/include/wx/gdicmn.h
@@ -292,8 +292,8 @@ public:
     wxSize& operator*=(long i) { x *= i; y *= i; return *this; }
     wxSize& operator/=(unsigned long i) { x /= i; y /= i; return *this; }
     wxSize& operator*=(unsigned long i) { x *= i; y *= i; return *this; }
-    wxSize& operator/=(double i) { x = int(x/i); y = int(y/i); return *this; }
-    wxSize& operator*=(double i) { x = int(x*i); y = int(y*i); return *this; }
+    wxSize& operator/=(double i) { x = wxRound(x/i); y = wxRound(y/i); return *this; }
+    wxSize& operator*=(double i) { x = wxRound(x*i); y = wxRound(y*i); return *this; }
 
     void IncTo(const wxSize& sz)
         { if ( sz.x > x ) x = sz.x; if ( sz.y > y ) y = sz.y; }
@@ -319,7 +319,7 @@ public:
 
 
     wxSize& Scale(double xscale, double yscale)
-        { x = (int)(x*xscale); y = (int)(y*yscale); return *this; }
+        { x = wxRound(x*xscale); y = wxRound(y*yscale); return *this; }
 
     // accessors
     void Set(int xx, int yy) { x = xx; y = yy; }
@@ -428,12 +428,12 @@ inline wxSize operator*(unsigned long i, const wxSize& s)
 
 inline wxSize operator*(const wxSize& s, double i)
 {
-    return wxSize(int(s.x * i), int(s.y * i));
+    return wxSize(wxRound(s.x * i), wxRound(s.y * i));
 }
 
 inline wxSize operator*(double i, const wxSize& s)
 {
-    return wxSize(int(s.x * i), int(s.y * i));
+    return wxSize(wxRound(s.x * i), wxRound(s.y * i));
 }
 
 
@@ -567,7 +567,7 @@ public:
 
     wxPoint() : x(0), y(0) { }
     wxPoint(int xx, int yy) : x(xx), y(yy) { }
-    wxPoint(const wxRealPoint& pt) : x(int(pt.x)), y(int(pt.y)) { }
+    wxPoint(const wxRealPoint& pt) : x(wxRound(pt.x)), y(wxRound(pt.y)) { }
 
     // no copy ctor or assignment operator - the defaults are ok