PyQt4 表单无法启动
PyQt4 form ain't launching
我编写了以下代码来执行在 QtDesigner 中创建的表单并将其转换为“.py”文件。我的问题是，当我执行代码时，它并没有真正显示表单，但是没有消息错误，并且它在工具栏上出现了一个 python 图标，就像它是 运行 表单一样，我尝试从 cmd.exe 启动它，但同样的东西 happens.PD：我使用 Sublime Text 3 和 Python 3.4.4。请帮忙，谢谢！
from PyQt4 import QtGui
import sys
import form3qt_edit
class Form3(QtGui.QMainWindow, form3qt_edit.Ui_MainWindow):
def __init__(self,parent =None):
super(Form3, self).__init__(parent)
self.setupUi(self)
def main():
app = QtGui.QApplication(sys.argv)
form = Form3()
form.show()
app.exec_()
if __name__ == '__main__':
main()
代码来自 formqt3_edit.py
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(710, 450)
MainWindow.setWindowOpacity(-1.0)
MainWindow.setStyleSheet(_fromUtf8("background-color:\'#effec7\';\n"
"border-radius:20px;\n"
"\n"
""))
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.tabWidget = QtGui.QTabWidget(self.centralwidget)
self.tabWidget.setGeometry(QtCore.QRect(150, 90, 391, 261))
self.tabWidget.setStyleSheet(_fromUtf8("background-color:\'#effec7\';\n"
"background-color: rgb(211, 207, 157);"))
self.tabWidget.setTabPosition(QtGui.QTabWidget.North)
self.tabWidget.setTabShape(QtGui.QTabWidget.Rounded)
self.tabWidget.setObjectName(_fromUtf8("tabWidget"))
self.tP = QtGui.QWidget()
self.tP.setObjectName(_fromUtf8("tP"))
self.checkBox = QtGui.QCheckBox(self.tP)
self.checkBox.setGeometry(QtCore.QRect(20, 10, 151, 17))
self.checkBox.setObjectName(_fromUtf8("checkBox"))
self.checkBox_2 = QtGui.QCheckBox(self.tP)
self.checkBox_2.setGeometry(QtCore.QRect(20, 40, 141, 17))
self.checkBox_2.setObjectName(_fromUtf8("checkBox_2"))
self.checkBox_3 = QtGui.QCheckBox(self.tP)
self.checkBox_3.setGeometry(QtCore.QRect(20, 70, 141, 17))
self.checkBox_3.setObjectName(_fromUtf8("checkBox_3"))
self.tabWidget.addTab(self.tP, _fromUtf8(""))
self.tC = QtGui.QWidget()
self.tC.setObjectName(_fromUtf8("tC"))
self.checkBox_4 = QtGui.QCheckBox(self.tC)
self.checkBox_4.setGeometry(QtCore.QRect(20, 10, 141, 17))
self.checkBox_4.setObjectName(_fromUtf8("checkBox_4"))
self.checkBox_5 = QtGui.QCheckBox(self.tC)
self.checkBox_5.setGeometry(QtCore.QRect(20, 30, 171, 17))
self.checkBox_5.setObjectName(_fromUtf8("checkBox_5"))
self.checkBox_6 = QtGui.QCheckBox(self.tC)
self.checkBox_6.setGeometry(QtCore.QRect(20, 50, 261, 17))
self.checkBox_6.setObjectName(_fromUtf8("checkBox_6"))
self.checkBox_7 = QtGui.QCheckBox(self.tC)
self.checkBox_7.setGeometry(QtCore.QRect(20, 70, 151, 17))
self.checkBox_7.setObjectName(_fromUtf8("checkBox_7"))
self.checkBox_8 = QtGui.QCheckBox(self.tC)
self.checkBox_8.setGeometry(QtCore.QRect(20, 90, 331, 17))
self.checkBox_8.setObjectName(_fromUtf8("checkBox_8"))
self.checkBox_9 = QtGui.QCheckBox(self.tC)
self.checkBox_9.setGeometry(QtCore.QRect(20, 110, 251, 17))
self.checkBox_9.setObjectName(_fromUtf8("checkBox_9"))
self.checkBox_10 = QtGui.QCheckBox(self.tC)
self.checkBox_10.setGeometry(QtCore.QRect(20, 130, 191, 17))
self.checkBox_10.setObjectName(_fromUtf8("checkBox_10"))
self.checkBox_11 = QtGui.QCheckBox(self.tC)
self.checkBox_11.setGeometry(QtCore.QRect(20, 150, 331, 17))
self.checkBox_11.setObjectName(_fromUtf8("checkBox_11"))
self.checkBox_12 = QtGui.QCheckBox(self.tC)
self.checkBox_12.setGeometry(QtCore.QRect(20, 170, 231, 17))
self.checkBox_12.setObjectName(_fromUtf8("checkBox_12"))
self.checkBox_13 = QtGui.QCheckBox(self.tC)
self.checkBox_13.setGeometry(QtCore.QRect(20, 190, 201, 17))
self.checkBox_13.setObjectName(_fromUtf8("checkBox_13"))
self.checkBox_14 = QtGui.QCheckBox(self.tC)
self.checkBox_14.setGeometry(QtCore.QRect(20, 210, 231, 17))
self.checkBox_14.setObjectName(_fromUtf8("checkBox_14"))
self.tabWidget.addTab(self.tC, _fromUtf8(""))
self.tO = QtGui.QWidget()
self.tO.setObjectName(_fromUtf8("tO"))
self.checkBox_15 = QtGui.QCheckBox(self.tO)
self.checkBox_15.setGeometry(QtCore.QRect(20, 10, 141, 17))
self.checkBox_15.setObjectName(_fromUtf8("checkBox_15"))
self.checkBox_16 = QtGui.QCheckBox(self.tO)
self.checkBox_16.setGeometry(QtCore.QRect(20, 30, 201, 17))
self.checkBox_16.setObjectName(_fromUtf8("checkBox_16"))
self.checkBox_17 = QtGui.QCheckBox(self.tO)
self.checkBox_17.setGeometry(QtCore.QRect(20, 50, 201, 17))
self.checkBox_17.setObjectName(_fromUtf8("checkBox_17"))
self.checkBox_18 = QtGui.QCheckBox(self.tO)
self.checkBox_18.setGeometry(QtCore.QRect(20, 70, 191, 17))
self.checkBox_18.setObjectName(_fromUtf8("checkBox_18"))
self.checkBox_19 = QtGui.QCheckBox(self.tO)
self.checkBox_19.setGeometry(QtCore.QRect(20, 90, 221, 17))
self.checkBox_19.setObjectName(_fromUtf8("checkBox_19"))
self.checkBox_20 = QtGui.QCheckBox(self.tO)
self.checkBox_20.setGeometry(QtCore.QRect(20, 110, 161, 17))
self.checkBox_20.setObjectName(_fromUtf8("checkBox_20"))
self.checkBox_21 = QtGui.QCheckBox(self.tO)
self.checkBox_21.setGeometry(QtCore.QRect(20, 130, 271, 17))
self.checkBox_21.setObjectName(_fromUtf8("checkBox_21"))
self.checkBox_22 = QtGui.QCheckBox(self.tO)
self.checkBox_22.setGeometry(QtCore.QRect(20, 150, 201, 17))
self.checkBox_22.setObjectName(_fromUtf8("checkBox_22"))
self.checkBox_23 = QtGui.QCheckBox(self.tO)
self.checkBox_23.setGeometry(QtCore.QRect(20, 170, 231, 17))
self.checkBox_23.setObjectName(_fromUtf8("checkBox_23"))
self.tabWidget.addTab(self.tO, _fromUtf8(""))
self.tA = QtGui.QWidget()
self.tA.setObjectName(_fromUtf8("tA"))
self.checkBox_24 = QtGui.QCheckBox(self.tA)
self.checkBox_24.setGeometry(QtCore.QRect(30, 10, 171, 17))
self.checkBox_24.setObjectName(_fromUtf8("checkBox_24"))
self.checkBox_25 = QtGui.QCheckBox(self.tA)
self.checkBox_25.setGeometry(QtCore.QRect(30, 50, 121, 17))
self.checkBox_25.setObjectName(_fromUtf8("checkBox_25"))
self.checkBox_26 = QtGui.QCheckBox(self.tA)
self.checkBox_26.setGeometry(QtCore.QRect(30, 70, 111, 17))
self.checkBox_26.setObjectName(_fromUtf8("checkBox_26"))
self.checkBox_27 = QtGui.QCheckBox(self.tA)
self.checkBox_27.setGeometry(QtCore.QRect(30, 30, 241, 17))
self.checkBox_27.setObjectName(_fromUtf8("checkBox_27"))
self.tabWidget.addTab(self.tA, _fromUtf8(""))
self.label = QtGui.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(230, -10, 211, 41))
font = QtGui.QFont()
font.setFamily(_fromUtf8("Yu Gothic UI Semibold"))
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName(_fromUtf8("label"))
self.plainTextEdit = QtGui.QPlainTextEdit(self.centralwidget)
self.plainTextEdit.setGeometry(QtCore.QRect(140, 30, 411, 51))
font = QtGui.QFont()
font.setFamily(_fromUtf8("Yu Gothic UI Semibold"))
self.plainTextEdit.setFont(font)
self.plainTextEdit.setStyleSheet(_fromUtf8("background-color: \'#effec7\'"))
self.plainTextEdit.setReadOnly(True)
self.plainTextEdit.setBackgroundVisible(True)
self.plainTextEdit.setObjectName(_fromUtf8("plainTextEdit"))
self.pushButton = QtGui.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(270, 370, 141, 23))
self.pushButton.setStyleSheet(_fromUtf8("border-radius:\'20px\';\n"
"background-color:\'#bea575\';\n"
"border-color:\'#e2d2ae\';\n"
""))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 710, 21))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
self.tabWidget.setCurrentIndex(3)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "Form3-QtDesigner", None))
self.checkBox.setText(_translate("MainWindow", "Gestión de trámites legales", None))
self.checkBox_2.setText(_translate("MainWindow", "Realización de línea base y estudios técnicos", None))
self.checkBox_3.setText(_translate("MainWindow", "Realización de diseños", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tP), _translate("MainWindow", "Planeación", None))
self.checkBox_4.setText(_translate("MainWindow", "Localización y replanteo", None))
self.checkBox_5.setText(_translate("MainWindow", "Adecuación de accesos o vías", None))
self.checkBox_6.setText(_translate("MainWindow", "Instalación de obras provisionales y/o definitivas", None))
self.checkBox_7.setText(_translate("MainWindow", "Explotación de préstamos", None))
self.checkBox_8.setText(_translate("MainWindow", "Ejecución de tratamientos silviculturales y manejo de coberturas", None))
self.checkBox_9.setText(_translate("MainWindow", "Construcción de obras de protección y drenaje", None))
self.checkBox_10.setText(_translate("MainWindow", "Realización de trabajos preliminares", None))
self.checkBox_11.setText(_translate("MainWindow", "Ejecución de cimentaciones, fundaciones, relleno y compactación", None))
self.checkBox_12.setText(_translate("MainWindow", "Levantamiento o instalación de estructuras.", None))
self.checkBox_13.setText(_translate("MainWindow", "Levantamiento o instalación de muros", None))
self.checkBox_14.setText(_translate("MainWindow", "Realización de acabados y obras exteriores", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tC), _translate("MainWindow", "Construcción", None))
self.checkBox_15.setText(_translate("MainWindow", "Realización de pruebas", None))
self.checkBox_16.setText(_translate("MainWindow", "Operación obra de infraestructura", None))
self.checkBox_17.setText(_translate("MainWindow", "Reposición de elementos o tramos", None))
self.checkBox_18.setText(_translate("MainWindow", "Reparación de elementos o tramos", None))
self.checkBox_19.setText(_translate("MainWindow", "Limpieza de las instalaciones y elementos", None))
self.checkBox_20.setText(_translate("MainWindow", "Mejoramiento o ampliaciones", None))
self.checkBox_21.setText(_translate("MainWindow", "Limpieza final de la obra e instalaciones temporales", None))
self.checkBox_22.setText(_translate("MainWindow", "Control de emisiones y vertimientos", None))
self.checkBox_23.setText(_translate("MainWindow", "Cobertura o reconformación final del sitio", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tO), _translate("MainWindow", "Operación", None))
self.checkBox_24.setText(_translate("MainWindow", "Desmantelamiento/demolición", None))
self.checkBox_25.setText(_translate("MainWindow", "Obras de urbanismo", None))
self.checkBox_26.setText(_translate("MainWindow", "Uso final del sitio", None))
self.checkBox_27.setText(_translate("MainWindow", "Reactivación de un servicio o sistema natural", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tA), _translate("MainWindow", "Abandono", None))
self.label.setText(_translate("MainWindow", "Selección de actividades", None))
self.plainTextEdit.setPlainText(_translate("MainWindow", "Por favor, seleccione las actividades de ingeniería que se llevarán a cabo en el proyecto, de acuerdo con la fase del ciclo de vida.\n"
"Luego de la selección, haga clik en el botón \"Seleccionar impactos\"", None))
self.pushButton.setText(_translate("MainWindow", "Seleccionar impactos", None))
尝试更改
MainWindow.setWindowOpacity(-1.0)
至
MainWindow.setWindowOpacity(1.0)
来自http://doc.qt.io/qt-4.8/qwidget.html#windowOpacity-prop
不透明度的有效范围是从 1.0（完全不透明）到 0.0（完全透明）。
我在 Ubuntu 上用 Python 2.7.11+ 尝试了你的代码，得到了和你一样的结果
it doesn't really show the form, but there is no message error and it
appears an python icon on the toolbar like if it was running the form
但更改这一行解决了问题
更新：刚刚在 Windows 10、Python 3.4.4、PyQt4、Sublime build 3103 上尝试过。它适用于更新的代码行，甚至来自 Sublime（使用 Ctrl + B ), 提供的两个文件只有一个变化。
我编写了以下代码来执行在 QtDesigner 中创建的表单并将其转换为“.py”文件。我的问题是，当我执行代码时，它并没有真正显示表单，但是没有消息错误，并且它在工具栏上出现了一个 python 图标，就像它是 运行 表单一样，我尝试从 cmd.exe 启动它，但同样的东西 happens.PD：我使用 Sublime Text 3 和 Python 3.4.4。请帮忙，谢谢！
from PyQt4 import QtGui
import sys
import form3qt_edit
class Form3(QtGui.QMainWindow, form3qt_edit.Ui_MainWindow):
def __init__(self,parent =None):
super(Form3, self).__init__(parent)
self.setupUi(self)
def main():
app = QtGui.QApplication(sys.argv)
form = Form3()
form.show()
app.exec_()
if __name__ == '__main__':
main()
代码来自 formqt3_edit.py
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(710, 450)
MainWindow.setWindowOpacity(-1.0)
MainWindow.setStyleSheet(_fromUtf8("background-color:\'#effec7\';\n"
"border-radius:20px;\n"
"\n"
""))
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.tabWidget = QtGui.QTabWidget(self.centralwidget)
self.tabWidget.setGeometry(QtCore.QRect(150, 90, 391, 261))
self.tabWidget.setStyleSheet(_fromUtf8("background-color:\'#effec7\';\n"
"background-color: rgb(211, 207, 157);"))
self.tabWidget.setTabPosition(QtGui.QTabWidget.North)
self.tabWidget.setTabShape(QtGui.QTabWidget.Rounded)
self.tabWidget.setObjectName(_fromUtf8("tabWidget"))
self.tP = QtGui.QWidget()
self.tP.setObjectName(_fromUtf8("tP"))
self.checkBox = QtGui.QCheckBox(self.tP)
self.checkBox.setGeometry(QtCore.QRect(20, 10, 151, 17))
self.checkBox.setObjectName(_fromUtf8("checkBox"))
self.checkBox_2 = QtGui.QCheckBox(self.tP)
self.checkBox_2.setGeometry(QtCore.QRect(20, 40, 141, 17))
self.checkBox_2.setObjectName(_fromUtf8("checkBox_2"))
self.checkBox_3 = QtGui.QCheckBox(self.tP)
self.checkBox_3.setGeometry(QtCore.QRect(20, 70, 141, 17))
self.checkBox_3.setObjectName(_fromUtf8("checkBox_3"))
self.tabWidget.addTab(self.tP, _fromUtf8(""))
self.tC = QtGui.QWidget()
self.tC.setObjectName(_fromUtf8("tC"))
self.checkBox_4 = QtGui.QCheckBox(self.tC)
self.checkBox_4.setGeometry(QtCore.QRect(20, 10, 141, 17))
self.checkBox_4.setObjectName(_fromUtf8("checkBox_4"))
self.checkBox_5 = QtGui.QCheckBox(self.tC)
self.checkBox_5.setGeometry(QtCore.QRect(20, 30, 171, 17))
self.checkBox_5.setObjectName(_fromUtf8("checkBox_5"))
self.checkBox_6 = QtGui.QCheckBox(self.tC)
self.checkBox_6.setGeometry(QtCore.QRect(20, 50, 261, 17))
self.checkBox_6.setObjectName(_fromUtf8("checkBox_6"))
self.checkBox_7 = QtGui.QCheckBox(self.tC)
self.checkBox_7.setGeometry(QtCore.QRect(20, 70, 151, 17))
self.checkBox_7.setObjectName(_fromUtf8("checkBox_7"))
self.checkBox_8 = QtGui.QCheckBox(self.tC)
self.checkBox_8.setGeometry(QtCore.QRect(20, 90, 331, 17))
self.checkBox_8.setObjectName(_fromUtf8("checkBox_8"))
self.checkBox_9 = QtGui.QCheckBox(self.tC)
self.checkBox_9.setGeometry(QtCore.QRect(20, 110, 251, 17))
self.checkBox_9.setObjectName(_fromUtf8("checkBox_9"))
self.checkBox_10 = QtGui.QCheckBox(self.tC)
self.checkBox_10.setGeometry(QtCore.QRect(20, 130, 191, 17))
self.checkBox_10.setObjectName(_fromUtf8("checkBox_10"))
self.checkBox_11 = QtGui.QCheckBox(self.tC)
self.checkBox_11.setGeometry(QtCore.QRect(20, 150, 331, 17))
self.checkBox_11.setObjectName(_fromUtf8("checkBox_11"))
self.checkBox_12 = QtGui.QCheckBox(self.tC)
self.checkBox_12.setGeometry(QtCore.QRect(20, 170, 231, 17))
self.checkBox_12.setObjectName(_fromUtf8("checkBox_12"))
self.checkBox_13 = QtGui.QCheckBox(self.tC)
self.checkBox_13.setGeometry(QtCore.QRect(20, 190, 201, 17))
self.checkBox_13.setObjectName(_fromUtf8("checkBox_13"))
self.checkBox_14 = QtGui.QCheckBox(self.tC)
self.checkBox_14.setGeometry(QtCore.QRect(20, 210, 231, 17))
self.checkBox_14.setObjectName(_fromUtf8("checkBox_14"))
self.tabWidget.addTab(self.tC, _fromUtf8(""))
self.tO = QtGui.QWidget()
self.tO.setObjectName(_fromUtf8("tO"))
self.checkBox_15 = QtGui.QCheckBox(self.tO)
self.checkBox_15.setGeometry(QtCore.QRect(20, 10, 141, 17))
self.checkBox_15.setObjectName(_fromUtf8("checkBox_15"))
self.checkBox_16 = QtGui.QCheckBox(self.tO)
self.checkBox_16.setGeometry(QtCore.QRect(20, 30, 201, 17))
self.checkBox_16.setObjectName(_fromUtf8("checkBox_16"))
self.checkBox_17 = QtGui.QCheckBox(self.tO)
self.checkBox_17.setGeometry(QtCore.QRect(20, 50, 201, 17))
self.checkBox_17.setObjectName(_fromUtf8("checkBox_17"))
self.checkBox_18 = QtGui.QCheckBox(self.tO)
self.checkBox_18.setGeometry(QtCore.QRect(20, 70, 191, 17))
self.checkBox_18.setObjectName(_fromUtf8("checkBox_18"))
self.checkBox_19 = QtGui.QCheckBox(self.tO)
self.checkBox_19.setGeometry(QtCore.QRect(20, 90, 221, 17))
self.checkBox_19.setObjectName(_fromUtf8("checkBox_19"))
self.checkBox_20 = QtGui.QCheckBox(self.tO)
self.checkBox_20.setGeometry(QtCore.QRect(20, 110, 161, 17))
self.checkBox_20.setObjectName(_fromUtf8("checkBox_20"))
self.checkBox_21 = QtGui.QCheckBox(self.tO)
self.checkBox_21.setGeometry(QtCore.QRect(20, 130, 271, 17))
self.checkBox_21.setObjectName(_fromUtf8("checkBox_21"))
self.checkBox_22 = QtGui.QCheckBox(self.tO)
self.checkBox_22.setGeometry(QtCore.QRect(20, 150, 201, 17))
self.checkBox_22.setObjectName(_fromUtf8("checkBox_22"))
self.checkBox_23 = QtGui.QCheckBox(self.tO)
self.checkBox_23.setGeometry(QtCore.QRect(20, 170, 231, 17))
self.checkBox_23.setObjectName(_fromUtf8("checkBox_23"))
self.tabWidget.addTab(self.tO, _fromUtf8(""))
self.tA = QtGui.QWidget()
self.tA.setObjectName(_fromUtf8("tA"))
self.checkBox_24 = QtGui.QCheckBox(self.tA)
self.checkBox_24.setGeometry(QtCore.QRect(30, 10, 171, 17))
self.checkBox_24.setObjectName(_fromUtf8("checkBox_24"))
self.checkBox_25 = QtGui.QCheckBox(self.tA)
self.checkBox_25.setGeometry(QtCore.QRect(30, 50, 121, 17))
self.checkBox_25.setObjectName(_fromUtf8("checkBox_25"))
self.checkBox_26 = QtGui.QCheckBox(self.tA)
self.checkBox_26.setGeometry(QtCore.QRect(30, 70, 111, 17))
self.checkBox_26.setObjectName(_fromUtf8("checkBox_26"))
self.checkBox_27 = QtGui.QCheckBox(self.tA)
self.checkBox_27.setGeometry(QtCore.QRect(30, 30, 241, 17))
self.checkBox_27.setObjectName(_fromUtf8("checkBox_27"))
self.tabWidget.addTab(self.tA, _fromUtf8(""))
self.label = QtGui.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(230, -10, 211, 41))
font = QtGui.QFont()
font.setFamily(_fromUtf8("Yu Gothic UI Semibold"))
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName(_fromUtf8("label"))
self.plainTextEdit = QtGui.QPlainTextEdit(self.centralwidget)
self.plainTextEdit.setGeometry(QtCore.QRect(140, 30, 411, 51))
font = QtGui.QFont()
font.setFamily(_fromUtf8("Yu Gothic UI Semibold"))
self.plainTextEdit.setFont(font)
self.plainTextEdit.setStyleSheet(_fromUtf8("background-color: \'#effec7\'"))
self.plainTextEdit.setReadOnly(True)
self.plainTextEdit.setBackgroundVisible(True)
self.plainTextEdit.setObjectName(_fromUtf8("plainTextEdit"))
self.pushButton = QtGui.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(270, 370, 141, 23))
self.pushButton.setStyleSheet(_fromUtf8("border-radius:\'20px\';\n"
"background-color:\'#bea575\';\n"
"border-color:\'#e2d2ae\';\n"
""))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 710, 21))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
self.tabWidget.setCurrentIndex(3)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "Form3-QtDesigner", None))
self.checkBox.setText(_translate("MainWindow", "Gestión de trámites legales", None))
self.checkBox_2.setText(_translate("MainWindow", "Realización de línea base y estudios técnicos", None))
self.checkBox_3.setText(_translate("MainWindow", "Realización de diseños", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tP), _translate("MainWindow", "Planeación", None))
self.checkBox_4.setText(_translate("MainWindow", "Localización y replanteo", None))
self.checkBox_5.setText(_translate("MainWindow", "Adecuación de accesos o vías", None))
self.checkBox_6.setText(_translate("MainWindow", "Instalación de obras provisionales y/o definitivas", None))
self.checkBox_7.setText(_translate("MainWindow", "Explotación de préstamos", None))
self.checkBox_8.setText(_translate("MainWindow", "Ejecución de tratamientos silviculturales y manejo de coberturas", None))
self.checkBox_9.setText(_translate("MainWindow", "Construcción de obras de protección y drenaje", None))
self.checkBox_10.setText(_translate("MainWindow", "Realización de trabajos preliminares", None))
self.checkBox_11.setText(_translate("MainWindow", "Ejecución de cimentaciones, fundaciones, relleno y compactación", None))
self.checkBox_12.setText(_translate("MainWindow", "Levantamiento o instalación de estructuras.", None))
self.checkBox_13.setText(_translate("MainWindow", "Levantamiento o instalación de muros", None))
self.checkBox_14.setText(_translate("MainWindow", "Realización de acabados y obras exteriores", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tC), _translate("MainWindow", "Construcción", None))
self.checkBox_15.setText(_translate("MainWindow", "Realización de pruebas", None))
self.checkBox_16.setText(_translate("MainWindow", "Operación obra de infraestructura", None))
self.checkBox_17.setText(_translate("MainWindow", "Reposición de elementos o tramos", None))
self.checkBox_18.setText(_translate("MainWindow", "Reparación de elementos o tramos", None))
self.checkBox_19.setText(_translate("MainWindow", "Limpieza de las instalaciones y elementos", None))
self.checkBox_20.setText(_translate("MainWindow", "Mejoramiento o ampliaciones", None))
self.checkBox_21.setText(_translate("MainWindow", "Limpieza final de la obra e instalaciones temporales", None))
self.checkBox_22.setText(_translate("MainWindow", "Control de emisiones y vertimientos", None))
self.checkBox_23.setText(_translate("MainWindow", "Cobertura o reconformación final del sitio", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tO), _translate("MainWindow", "Operación", None))
self.checkBox_24.setText(_translate("MainWindow", "Desmantelamiento/demolición", None))
self.checkBox_25.setText(_translate("MainWindow", "Obras de urbanismo", None))
self.checkBox_26.setText(_translate("MainWindow", "Uso final del sitio", None))
self.checkBox_27.setText(_translate("MainWindow", "Reactivación de un servicio o sistema natural", None))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tA), _translate("MainWindow", "Abandono", None))
self.label.setText(_translate("MainWindow", "Selección de actividades", None))
self.plainTextEdit.setPlainText(_translate("MainWindow", "Por favor, seleccione las actividades de ingeniería que se llevarán a cabo en el proyecto, de acuerdo con la fase del ciclo de vida.\n"
"Luego de la selección, haga clik en el botón \"Seleccionar impactos\"", None))
self.pushButton.setText(_translate("MainWindow", "Seleccionar impactos", None))
尝试更改
MainWindow.setWindowOpacity(-1.0)
至
MainWindow.setWindowOpacity(1.0)
来自http://doc.qt.io/qt-4.8/qwidget.html#windowOpacity-prop 不透明度的有效范围是从 1.0（完全不透明）到 0.0（完全透明）。
我在 Ubuntu 上用 Python 2.7.11+ 尝试了你的代码，得到了和你一样的结果
it doesn't really show the form, but there is no message error and it appears an python icon on the toolbar like if it was running the form
但更改这一行解决了问题
更新：刚刚在 Windows 10、Python 3.4.4、PyQt4、Sublime build 3103 上尝试过。它适用于更新的代码行，甚至来自 Sublime（使用 Ctrl + B ), 提供的两个文件只有一个变化。