Textchanged (*) highlights

#-*-Coding: cp936 -*-

Import sys

From pyqt4 import qtcore, qtgui

 

Class mydialog (qtgui. qdialog ):

Def _ init _ (self, parent = none ):

Qtgui. qdialog. _ init _ (self, parent)

Self. Quit = qtgui. qpushbutton ("quit ")

 

Self. Change = qtgui. qpushbutton ("change ")

Self. Change. setenabled (false)

 

# Funny widget

Self. LCD = qtgui. qlcdnumber (2)

 

Self. Slider = qtgui. qslider (qtcore. QT. Horizontal)

Self. Slider. setrange (0, 99)

Self. Slider. setvalue (0)

 

Self. lineedit = qtgui. qlineedit ()

 

Self. Connect (self. Quit, qtcore. Signal ("clicked ()"),

Qtgui. qapp, qtcore. Slot ("Quit ()"))

Self. Connect (self. lineedit, qtcore. Signal ("textchanged (const qstring &)"),

Self. enablechangebutton)

Self. Connect (self. Slider, qtcore. Signal ("valuechanged (INT )"),

Self. sliderchange)

Self. Connect (self. Change, qtcore. Signal ("clicked ()"),

Self. Change)

 

Self. rightlayout = qtgui. qvboxlayout ()

Self. rightlayout. addwidget (self. lineedit)

Self. rightlayout. addwidget (self. Change)

Self. leftlayout = qtgui. qvboxlayout ()

Self. leftlayout. addwidget (self. LCD)

Self. leftlayout. addwidget (self. Slider)

Self. layout = qtgui. qhboxlayout ()

Self. layout. addwidget (self. Quit)

Self. layout. addlayout (self. leftlayout)

Self. layout. addlayout (self. rightlayout)

Self. setlayout (self. layout );

Def enablechangebutton (self, text ):

Self. Change. setenabled (text. isempty () = false) # emphasis

 

Def change (Self ):

Value = int (self. lineedit. Text ())

Self. LCD. Display (value)

Self. Slider. setvalue (value)

 

Def sliderchange (Self ):

Value = self. Slider. Value ()

Self. LCD. Display (value)

Self. lineedit. settext (STR (value ))

 

APP = qtgui. qapplication (SYS. argv)

Dialog = mydialog ()

Dialog. Show ()

Sys.exit(app.exe C _())

 

Textchanged (*) highlights