Имам два работещи примера за ComboBox, в единият има QVBoxLayout в другият няма. Искаше ми се да преправя този с
Лейаут, като го махна или като му променя размера, но когато го направя накрая не излиза нищо в прозореца.
Ето двата примерни кода:
#!/usr/bin/env python
#
# [SNIPPET_NAME: Combo Box Basic]
# [SNIPPET_CATEGORIES: PyQt4]
# [SNIPPET_DESCRIPTION: An basic example of a combo box]
# [SNIPPET_AUTHOR: Darren Worrall <dw@darrenworrall.co.uk>]
# [SNIPPET_LICENSE: GPL]
# [SNIPPET_DOCS: http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qcombobox.html]
# example comboboxbasic.py
import sys
from PyQt4 import QtGui, QtCore
class ComboBoxBasic(QtGui.QWidget):
"""
An basic example combo box application
"""
def __init__(self):
# create GUI
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('Combo Box Basic')
# Set the window dimensions
self.resize(250,50)
# vertical layout for widgets
self.vbox = QtGui.QVBoxLayout()
self.setLayout(self.vbox)
# Create a combo box and add it to our layout
self.combo = QtGui.QComboBox()
self.vbox.addWidget(self.combo)
# A label to display our selection
self.lbl = QtGui.QLabel('Ubuntu')
# Center align text
self.lbl.setAlignment(QtCore.Qt.AlignHCenter)
self.vbox.addWidget(self.lbl)
# You can add items individually:
self.combo.addItem('Ubuntu')
self.combo.addItem('Fedora')
# Or add a sequence in one call
distrolist = ['Linux Mint', 'Gentoo', 'Mandriva']
self.combo.addItems(distrolist)
# Connect the activated signal on the combo box to our handler.
# This is an overloaded signal, meaning there are variants of it, for
# example the activated(int) variant emits the index of the chosen
# option, rather than it's text
self.connect(self.combo, QtCore.SIGNAL('activated(QString)'), self.combo_chosen)
def combo_chosen(self, text):
"""
Handler called when a distro is chosen from the combo box
"""
self.lbl.setText(text)
# If the program is run directly or passed as an argument to the python
# interpreter then create a ComboBoxBasic instance and show it
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
gui = ComboBoxBasic()
gui.show()
app.exec_()
и
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
ZetCode PyQt4 tutorial
This example shows
how to use QtGui.QComboBox widget.
author: Jan Bodnar
website: zetcode.com
last edited: September 2011
"""
import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.lbl = QtGui.QLabel("Ubuntu", self)
combo = QtGui.QComboBox(self)
combo.addItem("Ubuntu")
combo.addItem("Mandriva")
combo.addItem("Fedora")
combo.addItem("Red Hat")
combo.addItem("Gentoo")
combo.move(50, 50)
self.lbl.move(50, 150)
combo.activated[str].connect(self.onActivated)
self.setGeometry(300, 300, 300, 200)
self.setWindowTitle('QtGui.QComboBox')
self.show()
def onActivated(self, text):
self.lbl.setText(text)
self.lbl.adjustSize()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
Нещо не разбирам кое как става...
Ако коментирам редовете свързани с лейаута като
self.vbox = QtGui.QVBoxLayout()
self.setLayout(self.vbox)
Какво трябва да добавя , за да има все пак изобразен КомбоБокс?
ПС. Това са ми първи опити с Питон.
Автор
Тема: python i QVBoxLayout (Прочетена 9999 пъти)
Feb 18, 2007, 00:21