Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Z/src/ngltools/ngltools_dtg.h

@@ -0,0 +1,87 @@
+#pragma once
+
+#include <QStringList>
+#include "ngltools_export.h"
+
+class QDateTime;
+
+
+namespace DTG
+{
+
+
+
+enum DateTimeType
+{
+  DTG               = 1,    
+  DDMMYYYY_HHMMSS_Z = 2,    
+  DDMMYYYY_Z_HHMMSS = 4     
+};
+
+
+
+
+enum DisplayFormat      
+{
+  Short,                
+  Long,                 
+  TurboLong,
+  Default               
+};
+
+enum DTGValidation
+{
+  Invalid,
+  Intermediate,
+  Acceptable
+};
+
+
+
+NGLTOOLS_EXPORT void setDateTimeType(DateTimeType dtType);
+
+
+NGLTOOLS_EXPORT DateTimeType dateTimeType();
+
+
+
+NGLTOOLS_EXPORT void setDefaultDisplayFormat(DisplayFormat dtFormat);
+
+
+NGLTOOLS_EXPORT DisplayFormat defaultDisplayFormat();
+
+
+
+NGLTOOLS_EXPORT QString toString(const QDateTime &dt, DisplayFormat format = Default, DateTimeType = dateTimeType());
+
+
+NGLTOOLS_EXPORT QString toStringMSec(qint64 msecSinceEpoch, DisplayFormat format = Default);
+
+
+
+NGLTOOLS_EXPORT QDateTime fromDTGString(const QString &str, bool *bOk = nullptr);
+
+
+NGLTOOLS_EXPORT DTGValidation validateString(const QString &str, QDateTime &dt);
+
+
+
+NGLTOOLS_EXPORT bool setTimezone(char tz, bool bUserDefinedZone);
+
+
+NGLTOOLS_EXPORT char timezone();
+NGLTOOLS_EXPORT char timezoneUserDefined();
+NGLTOOLS_EXPORT char timezoneExerciseDefault();
+
+NGLTOOLS_EXPORT bool isTimezoneValid(char tz);
+
+
+NGLTOOLS_EXPORT int timezone2Hours(char tz, bool *bOk = nullptr);
+
+
+NGLTOOLS_EXPORT int timezone2Secs(char tz, bool *bOk = nullptr);
+
+
+NGLTOOLS_EXPORT QStringList months();
+
+}