fix keysequence to use quit when available

todo

@@ -18,13 +18,11 @@ jpgegoptim 1.2.2
 advancecomp 1.15
 ===========================================
 later versions:
-animate compressing.gif
-figure out why QKeySequence.quit doesnt work
-
-allow selection/deletion of rows from table (and subsequently the imagelist)
-check for double files
-pnypng api? http://www.gracepointafterfive.com/punypng/api
-imagemagick/graphicmagick?
+    animate compressing.gif
+    allow selection/deletion of rows from table (and subsequently the imagelist)
+    check for double files when adding
+    pnypng api? http://www.gracepointafterfive.com/punypng/api
+    imagemagick/graphicmagick?
 
 
 thanks to:

trimage.py

@@ -26,8 +26,10 @@ class StartQT4(QMainWindow):
         QWidget.__init__(self, parent)
         self.ui = Ui_trimage()
         self.ui.setupUi(self)
-        #TODO use standardKey Quit.
-        self.quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
+        if hasattr(QKeySequence, 'Quit'):
+            self.quit_shortcut = QShortcut(QKeySequence(QKeySequence.Quit), self)
+        else:
+            self.quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 
         # disable recompress
         self.ui.recompress.setEnabled(False)