--- a/python/codeeditor.py	Sat Mar 02 09:58:31 2013 +0100
+++ b/python/codeeditor.py	Sat Mar 02 10:19:38 2013 +0100
@@ -57,6 +57,10 @@
       self.filename = None
       self.setFont(QFont('Courier'))
       self.lineNumberArea = LineNumberArea(self)
+      h = QFontMetrics(self.font()).height()
+      print(h)
+      self.errorPixmap = QPixmap('error.png').scaled(h, h)
+      self.errorList = []
 
       self.blockCountChanged.connect(self.updateLineNumberAreaWidth)
       self.updateRequest.connect(self.updateLineNumberArea)
@@ -102,6 +106,9 @@
       self.setExtraSelections( [ selection ] )
    def clearErrors(self):
       self.setExtraSelections( [  ] )
+   def setErrors(self, el):
+      self.errorList = el
+      self.lineNumberArea.update()
 
    def lineNumberAreaWidth(self):
       digits = 1
@@ -109,7 +116,7 @@
       while mx >= 10:
          mx = mx / 10
          digits += 1
-      space = 3 + self.fontMetrics().width('8') * digits
+      space = 3 + self.fontMetrics().width('8') * digits + self.errorPixmap.width() + 2
       return space
    def lineNumberAreaPaintEvent(self, ev):
       painter = QPainter(self.lineNumberArea)
@@ -123,6 +130,10 @@
             num = str(blockNumber + 1)
             painter.setPen(Qt.black)
             painter.drawText(0, top, self.lineNumberArea.width(), self.fontMetrics().height(), Qt.AlignRight, num)
+            for e in self.errorList:
+               if e.loc.row == blockNumber + 1:
+                  painter.drawPixmap(0, top, self.errorPixmap)
+
          block = block.next()
          top = bottom
          bottom = top + self.blockBoundingRect(block).height()