我是 PyQT4 的新手,我遇到了以下问题。
一些应用程序必须在一个屏幕上收集用户数据并在按钮单击时显示下一个屏幕。
主文件
app = QtGui.QApplication(sys.argv)
#here I create main window with inherited class
w = SAN_MainWindow()
#and apply some basic geometry
w.SetUI()
#here first screen rendered and button event applyed
w.ApplyWidget( SAN_Intro() )
w.show()
sys.exit(app.exec_())
第一个小部件的渲染正确发生。
SAN_MainWindow.py:
class SAN_MainWindow(QtGui.QMainWindow):
def __init__(self ):
super(SAN_MainWindow, self).__init__()
def SetUI(self):
self.setObjectName(_fromUtf8("MainWindow"))
self.resize(789, 602)
self.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
self.central_widget = QtGui.QWidget(self)
self.central_widget.setObjectName(_fromUtf8("central_widget"))
self.setCentralWidget(self.central_widget)
def ApplyWidget( self, widget ):
self.active_widget = widget
self.active_widget.Setup(self.central_widget)
self.active_widget.SetControls( self )
def RemoveActiveWidget( self ):
self.active_widget.widget().setParent(None)
def ShowInstruction( self ):
self.RemoveActiveWidget()
self.ApplyWidget( SAN_Instruction() )
#self.centralWidget().update() <- Problem
SAN_Intro.py:
class SAN_Intro(object):
def __init__(self):
super(SAN_Intro, self).__init__()
def Setup(self, widget):
self.gridLayoutWidget = QtGui.QWidget(widget)
self.gridLayoutWidget.setGeometry(QtCore.QRect(80, 30, 638, 451))
self.gridLayoutWidget.setObjectName(_fromUtf8("gridLayoutWidget"))
self.gridLayout = QtGui.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(-1, 16, 16, -1)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
#a lot of form inputs instructions....
def SetControls( self, main_window ):
QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), main_window.ShowInstruction)
def widget(self):
return self.gridLayoutWidget
SAN_Instruction与 SAN_Intro几乎相同,但在 Setup 中使用不同的命令:
class SAN_Instruction(object):
def __init__(self):
super(SAN_Instruction, self).__init__()
def Setup(self, widget):
self.verticalLayoutWidget = QtGui.QWidget(widget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(40, 20, 591, 521))
self.verticalLayoutWidget.setObjectName(_fromUtf8("verticalLayoutWidget"))
self.verticalLayout = QtGui.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setMargin(0)
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
#a lot of form inputs instructions....
def SetControls( self, main_window ):
pass
def widget(self):
return self.verticalLayoutWidget
这里是问题:我必须如何显示第二个(使用 SAN_Instruction 即时生成)小部件?我试图更新/显示/重绘主窗口/中央小部件/父级。但是我在按钮点击上得到的只是 self.RemoveActiveWidget()。
也许我的概念不正确?
提前感谢