support SDK < 10.6, fixes #14902

[wxWidgets.git] / include / wx / datetime.h

diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index 3420179e5a1effb2abba70547b4bf9df5c2f4342..5b6804709a39982e8944acb9ffc649b0477e9e24 100644 (file)
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -1063,6 +1063,8 @@ public:
     inline wxTimeSpan Subtract(const wxDateTime& dt) const;
     inline wxTimeSpan operator-(const wxDateTime& dt2) const;
 
+    wxDateSpan DiffAsDateSpan(const wxDateTime& dt) const;
+
     // conversion to/from text
     // ------------------------------------------------------------------------
 
@@ -1577,6 +1579,8 @@ public:
     int GetYears() const { return m_years; }
         // get number of months
     int GetMonths() const { return m_months; }
+        // returns 12*GetYears() + GetMonths()
+    int GetTotalMonths() const { return 12*m_years + m_months; }
         // get number of weeks
     int GetWeeks() const { return m_weeks; }
         // get number of days
@@ -1777,9 +1781,16 @@ inline wxDateTime wxDateTime::Today()
 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
 inline wxDateTime& wxDateTime::Set(time_t timet)
 {
-    // assign first to avoid long multiplication overflow!
-    m_time = timet - WX_TIME_BASE_OFFSET ;
-    m_time *= TIME_T_FACTOR;
+    if ( timet == (time_t)-1 )
+    {
+        m_time = wxInvalidDateTime.m_time;
+    }
+    else
+    {
+        // assign first to avoid long multiplication overflow!
+        m_time = timet - WX_TIME_BASE_OFFSET;
+        m_time *= TIME_T_FACTOR;
+    }
 
     return *this;
 }