Resolve #369,#370

add error return value

exported functions:

GetMergeCells
ProtectSheet
UnprotectSheet
UpdateLinkedValue
GetMergeCells
SetSheetVisible

inner functions:

workSheetReader
copySheet

1 files changed, 4 insertions, 1 deletions

diff --git a/shape.go b/shape.go
index e6b0456..5cac776 100644
--- a/shape.go
+++ b/shape.go
@@ -259,7 +259,10 @@ func (f *File) AddShape(sheet, cell, format string) error {
 		return err
 	}
 	// Read sheet data.
-	xlsx := f.workSheetReader(sheet)
+	xlsx, err := f.workSheetReader(sheet)
+	if err != nil {
+		return err
+	}
 	// Add first shape for given sheet, create xl/drawings/ and xl/drawings/_rels/ folder.
 	drawingID := f.countDrawings() + 1
 	drawingXML := "xl/drawings/drawing" + strconv.Itoa(drawingID) + ".xml"