append whattype example

WhatType/WhatType.pro

@@ -0,0 +1,20 @@
+# WhatType.pro
+
+TARGET = WhatType
+TEMPLATE = app
+
+QT += core
+
+CONFIG += console
+CONFIG -= app_bundle
+
+DEFINES += QT_DEPRECATED_WARNINGS
+
+##########################################################################
+# NOTE: You can fix value of QXlsx path of source code.
+#  QXLSX_PARENTPATH=./
+#  QXLSX_HEADERPATH=./header/
+#  QXLSX_SOURCEPATH=./source/
+include(../QXlsx/QXlsx.pri)
+
+SOURCES += main.cpp

WhatType/main.cpp

@@ -0,0 +1,77 @@
+// main.cpp
+
+#include <QtGlobal>
+#include <QCoreApplication>
+#include <QtCore>
+#include <QVariant>
+#include <QDir>
+#include <QDateTime>
+#include <QDate>
+#include <QTime>
+#include <QDebug>
+
+#include <iostream>
+using namespace std;
+
+#include "xlsxdocument.h"
+#include "xlsxchartsheet.h"
+#include "xlsxcellrange.h"
+#include "xlsxchart.h"
+#include "xlsxrichstring.h"
+#include "xlsxworkbook.h"
+using namespace QXlsx;
+
+int whatType(QVariant var);
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+
+    QXlsx::Document xlsxW;
+
+    xlsxW.write( 1, 1, QString("Hello Qt!") );
+    xlsxW.write( 2, 1, double(10.5) );
+    xlsxW.write( 3, 1, (int)10 );
+    xlsxW.write( 4, 1, QDateTime::currentDateTimeUtc() );
+    xlsxW.write( 5, 1, QDate( 2019, 10, 5 ) );
+    xlsxW.write( 6, 1, QTime( 4, 13, 36 ) );
+
+    if ( xlsxW.saveAs("Test.xlsx") ) // save the document as 'Test.xlsx'
+    {
+        qDebug() << "[debug] success to write xlsx file";
+    }
+    else
+    {
+        qDebug() << "[debug][error] failed to write xlsx file";
+    }
+
+    qDebug() << "[debug] current directory is " << QDir::currentPath();
+
+    Document xlsxR("Test.xlsx"); 
+    if ( ! xlsxR.load() )
+    {
+        qDebug() << "[debug][error] failed to load xlsx file.";
+    }
+
+    whatType( xlsxR.cellAt( 1, 1 )->readValue() );
+    whatType( xlsxR.cellAt( 2, 1 )->readValue() );
+    whatType( xlsxR.cellAt( 3, 1 )->readValue() );
+    whatType( xlsxR.cellAt( 4, 1 )->readValue() );
+    whatType( xlsxR.cellAt( 5, 1 )->readValue() );
+    whatType( xlsxR.cellAt( 6, 1 )->readValue() );
+
+    return 0;
+}
+
+int whatType(QVariant var)
+{
+    if ( var.type() == QVariant::Invalid ) { qDebug() << "Invalid"; }
+    if ( var.type() == QVariant::String ) { qDebug() << "String"; }
+    if ( var.type() == QVariant::Double ) { qDebug() << "Double"; }
+    if ( var.type() == QVariant::Int ) { qDebug() << "Int"; }
+    if ( var.type() == QVariant::DateTime ) { qDebug() << "DateTime"; }
+    if ( var.type() == QVariant::Date ) { qDebug() << "Date"; }
+    if ( var.type() == QVariant::Time ) { qDebug() << "Time"; }
+
+    return 0;
+}