1 files changed, 43 insertions, 0 deletions
diff --git a/col.go b/col.go
new file mode 100644
index 0000000..dbe004d
--- /dev/null
+++ b/col.go
@@ -0,0 +1,43 @@
+package excelize
+
+import (
+	"encoding/xml"
+	"strings"
+)
+
+// SetColWidth provides function to set the width of a single column or multiple columns.
+// For example:
+//
+//    xlsx := excelize.CreateFile()
+//    xlsx.SetColWidth("Sheet1", "A", "H", 20)
+//    err := xlsx.Save()
+//    if err != nil {
+//        fmt.Println(err)
+//        os.Exit(1)
+//    }
+//
+func (f *File) SetColWidth(sheet, startcol, endcol string, width float64) {
+	min := titleToNumber(strings.ToUpper(startcol)) + 1
+	max := titleToNumber(strings.ToUpper(endcol)) + 1
+	if min > max {
+		min, max = max, min
+	}
+	var xlsx xlsxWorksheet
+	name := "xl/worksheets/" + strings.ToLower(sheet) + ".xml"
+	xml.Unmarshal([]byte(f.readXML(name)), &xlsx)
+	col := xlsxCol{
+		Min:         min,
+		Max:         max,
+		Width:       width,
+		CustomWidth: true,
+	}
+	if xlsx.Cols != nil {
+		xlsx.Cols.Col = append(xlsx.Cols.Col, col)
+	} else {
+		cols := xlsxCols{}
+		cols.Col = append(cols.Col, col)
+		xlsx.Cols = &cols
+	}
+	output, _ := xml.Marshal(xlsx)
+	f.saveFileList(name, replaceWorkSheetsRelationshipsNameSpace(string(output)))
+}