Use the new style of defining signals, slots and connecting them

blink/widgets/lineedit.py

 # Copyright (c) 2010 AG Projects. See LICENSE for details.
 #
 
-from PyQt4.QtCore import Qt, QEvent, SIGNAL
+from PyQt4.QtCore import Qt, QEvent, pyqtSignal
 from PyQt4.QtGui import QLineEdit, QBoxLayout, QHBoxLayout, QLayout, QPainter, QPalette, QSpacerItem, QSizePolicy, QStyle, QWidget, QStyleOptionFrameV2
 
 from blink.widgets.util import QtDynamicProperty
 
 
 class SideWidget(QWidget):
+    sizeHintChanged = pyqtSignal()
+
     def __init__(self, parent=None):
         QWidget.__init__(self, parent)
 
     def event(self, event):
         if event.type() == QEvent.LayoutRequest:
-            self.emit(SIGNAL("sizeHintChanged()"))
+            self.sizeHintChanged.emit()
         return QWidget.event(self, event)
 
 
@@ -38,8 +40,8 @@ class LineEdit(QLineEdit):
         self.right_layout.setDirection(box_direction)
         self.right_layout.addItem(QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum))
         self.widgetSpacing = 2
-        self.connect(self.left_widget,  SIGNAL("sizeHintChanged()"), self._update_text_margins)
-        self.connect(self.right_widget, SIGNAL("sizeHintChanged()"), self._update_text_margins)
+        self.left_widget.sizeHintChanged.connect(self._update_text_margins)
+        self.right_widget.sizeHintChanged.connect(self._update_text_margins)
 
     @property
     def left_margin(self):

blink/widgets/searchbox.py

 # Copyright (c) 2010 AG Projects. See LICENSE for details.
 #
 
-from PyQt4.QtCore import Qt, SIGNAL, SLOT
+from PyQt4.QtCore import Qt
 from PyQt4.QtGui import QAbstractButton, QPainter, QPalette, QPixmap, QWidget
 
 from blink.resources import Resources
@@ -88,8 +88,8 @@ class SearchBox(LineEdit):
         self.addHeadWidget(self.search_icon)
         self.addTailWidget(self.clear_button)
         self.clear_button.hide()
-        self.connect(self.clear_button, SIGNAL("clicked()"), self, SLOT("clear()"))
-        self.connect(self, SIGNAL("textChanged(const QString&)"), self.text_changed)
+        self.clear_button.clicked.connect(self.clear)
+        self.textChanged.connect(self.text_changed)
         self.inactiveText = u"Search"
 
     def text_changed(self, text):