diff --git a/examples/xlsx/rowcolumn/main.cpp b/examples/xlsx/rowcolumn/main.cpp
new file mode 100644
index 0000000..ad12f27
--- /dev/null
+++ b/examples/xlsx/rowcolumn/main.cpp
@@ -0,0 +1,42 @@
+#include <QtCore>
+#include "xlsxdocument.h"
+#include "xlsxformat.h"
+
+#ifdef Q_OS_MAC
+#  define DATA_PATH "../../../"
+#else
+#  define DATA_PATH "./"
+#endif
+
+int main()
+{
+    QXlsx::Document xlsx;
+    xlsx.write(0, 2, "Row:0, Col:2 ==> (C1)");
+
+    //Set the height of the first row to 50.0(points)
+    xlsx.setRow(0, 50.0);
+
+    //Set the width of the third column to 40.0(chars)
+    xlsx.setColumn(2, 3, 40.0);
+
+    //Set style for the row 11th.
+    QXlsx::Format *format1 = xlsx.createFormat();
+    format1->setFontBold(true);
+    format1->setFontColor(QColor(Qt::blue));
+    format1->setFontSize(20);
+    xlsx.write(10, 0, "Hello Row Style");
+    xlsx.write(10, 5, "Blue Color");
+    xlsx.setRow(10, 40, format1);
+
+    //Set style for the col [9th, 16th)
+    QXlsx::Format *format2 = xlsx.createFormat();
+    format2->setFontBold(true);
+    format2->setFontColor(QColor(Qt::magenta));
+    for (int row=11; row<30; row++)
+        for (int col=8; col<15; col++)
+            xlsx.write(row, col, row+col);
+    xlsx.setColumn(8, 15, 5.0, format2);
+
+    xlsx.saveAs(DATA_PATH"Test.xlsx");
+    return 0;
+}
diff --git a/examples/xlsx/rowcolumn/rowcolumn.pro b/examples/xlsx/rowcolumn/rowcolumn.pro
new file mode 100644
index 0000000..5086d54
--- /dev/null
+++ b/examples/xlsx/rowcolumn/rowcolumn.pro
@@ -0,0 +1,6 @@
+TARGET = image
+
+#include(../../../src/xlsx/qtxlsx.pri)
+QT += xlsx
+
+SOURCES += main.cpp
diff --git a/examples/xlsx/xlsx.pro b/examples/xlsx/xlsx.pro
index a558313..05c328b 100644
--- a/examples/xlsx/xlsx.pro
+++ b/examples/xlsx/xlsx.pro
@@ -2,5 +2,6 @@ TEMPLATE = subdirs
 SUBDIRS = hello style \
     documentproperty \
     image \
-    mergecells
+    mergecells \
+    rowcolumn
 
diff --git a/src/xlsx/xlsxworksheet.cpp b/src/xlsx/xlsxworksheet.cpp
index 741d79e..33b9e6a 100755
--- a/src/xlsx/xlsxworksheet.cpp
+++ b/src/xlsx/xlsxworksheet.cpp
@@ -617,7 +617,7 @@ void Worksheet::saveToXmlFile(QIODevice *device)
         writer.writeStartElement(QStringLiteral("cols"));
         foreach (XlsxColumnInfo *col_info, d->colsInfo) {
             writer.writeStartElement(QStringLiteral("col"));
-            writer.writeAttribute(QStringLiteral("min"), QString::number(col_info->column_min));
+            writer.writeAttribute(QStringLiteral("min"), QString::number(col_info->column_min + 1));
             writer.writeAttribute(QStringLiteral("max"), QString::number(col_info->column_max));
             writer.writeAttribute(QStringLiteral("width"), QString::number(col_info->width, 'g', 15));
             if (col_info->format)
@@ -853,6 +853,9 @@ bool Worksheet::setColumn(int colFirst, int colLast, double width, Format *forma
     bool ignore_row = true;
     bool ignore_col = (format || (width && hidden)) ? false : true;
 
+    if (colFirst >= colLast)
+        return false;
+
     if (d->checkDimensions(0, colLast, ignore_row, ignore_col))
         return false;
     if (d->checkDimensions(0, colFirst, ignore_row, ignore_col))