From c3302e7e295593f89b6e355c921c9e16d8826d0f Mon Sep 17 00:00:00 2001
From: Ron Lee <ron@debian.org>
Date: Mon, 21 May 2001 19:03:33 +0000
Subject: [PATCH] Default wxDateTime objects are now 'invalid', changed
 wxDefaultDateTime definition to suit. Removed IsValid asserts from Set
 methods. Fixed broken test for validity that was checking m_time directly.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10256 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/datetime.h   |  5 ++---
 src/common/datetime.cpp | 17 ++---------------
 2 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index 92398e53f2..14c36c2d25 100644
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -539,7 +539,7 @@ public:
     // ------------------------------------------------------------------------
 
         // default ctor does not initialize the object, use Set()!
-    wxDateTime() { }
+    wxDateTime() { m_time = wxLongLong((long)ULONG_MAX, ULONG_MAX); }
 
         // from time_t: seconds since the Epoch 00:00:00 UTC, Jan 1, 1970)
 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
@@ -773,8 +773,7 @@ public:
     // result of timezone shift)
     // ------------------------------------------------------------------------
 
-        // is the date valid? Note that this will return TRUE for non
-        // initialized objects but FALSE if *this == wxInvalidDateTime
+        // is the date valid?
     inline bool IsValid() const { return m_time != wxInvalidDateTime.m_time; }
 
         // get the broken down date/time representation in the given timezone
diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp
index 987c812183..c04f928cee 100644
--- a/src/common/datetime.cpp
+++ b/src/common/datetime.cpp
@@ -194,11 +194,8 @@ static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] =
 
 // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to
 // indicate an invalid wxDateTime object
-#ifdef __WIN16__
+
 static const wxDateTime gs_dtDefault;
-#else
-static const wxDateTime gs_dtDefault = wxLongLong((long)ULONG_MAX, ULONG_MAX);
-#endif
 
 const wxDateTime& wxDefaultDateTime = gs_dtDefault;
 
@@ -1071,8 +1068,6 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country)
 // the values in the tm structure contain the local time
 wxDateTime& wxDateTime::Set(const struct tm& tm)
 {
-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
     struct tm tm2(tm);
     time_t timet = mktime(&tm2);
 
@@ -1111,8 +1106,6 @@ wxDateTime& wxDateTime::Set(wxDateTime_t hour,
                             wxDateTime_t second,
                             wxDateTime_t millisec)
 {
-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
     // we allow seconds to be 61 to account for the leap seconds, even if we
     // don't use them really
     wxDATETIME_CHECK( hour < 24 &&
@@ -1145,8 +1138,6 @@ wxDateTime& wxDateTime::Set(wxDateTime_t day,
                             wxDateTime_t second,
                             wxDateTime_t millisec)
 {
-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
     wxDATETIME_CHECK( hour < 24 &&
                       second < 62 &&
                       minute < 60 &&
@@ -2937,11 +2928,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date,
         // take this date as default
         tmDef = dateDef.GetTm();
     }
-#ifdef __WIN16__
-    else if ( m_time != 0 )
-#else
-    else if ( m_time != wxLongLong(0) )
-#endif
+    else if ( IsValid() )
     {
         // if this date is valid, don't change it
         tmDef = GetTm();
-- 
2.45.2