我一直在尝试使用 python3 和 Qt4 从现有窗口调用一个新窗口。
我已经使用 Qt Designer(主应用程序和另一个)创建了两个窗口,并且我已经将 Qt Designer 生成的 .ui 文件转换为 .py 脚本 - 但我似乎无法从主应用程序创建新窗口.
我试过这样做:
############### MAIN APPLICATION SCRIPT ################
from PyQt4 import QtCore, QtGui
import v2
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(194, 101)
self.button1 = QtGui.QPushButton(Form)
self.button1.setGeometry(QtCore.QRect(50, 30, 99, 23))
self.button1.setObjectName(_fromUtf8("button1"))
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(QtGui.QApplication.translate("Form", "Form", None, QtGui.QApplication.UnicodeUTF8))
self.button1.setText(QtGui.QApplication.translate("Form", "Ventana", None, QtGui.QApplication.UnicodeUTF8))
self.button1.connect(self.button1, QtCore.SIGNAL(_fromUtf8("clicked()")), self.mbutton1)
def mbutton1(self):
v2.main()
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
Form = QtGui.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
################## SECOND WINDOW #######################
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(400, 300)
self.label = QtGui.QLabel(Form)
self.label.setGeometry(QtCore.QRect(160, 40, 57, 14))
self.label.setObjectName(_fromUtf8("label"))
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(QtGui.QApplication.translate("Form", "Form", None, QtGui.QApplication.UnicodeUTF8))
self.label.setText(QtGui.QApplication.translate("Form", "LABEL 2", None, QtGui.QApplication.UnicodeUTF8))
def main():
import sys
app = QtGui.QApplication(sys.argv)
Form = QtGui.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
但我收到此错误消息:
QCoreApplication::exec: The event loop is already running
QPixmap: Must construct a QApplication before a QPaintDevice