尝试使用PyQt4构建用户界面。弹出一个对话框窗口,当按下“确定”时,我想让它做一些关闭然后关闭的东西。不幸的是,我似乎无法让它工作 - 尝试了Dialog.exec_(),Dialog.close(),self.exec_(),self.close()的各种组合,向Dialog发出“接受”信号.accept等。到目前为止,没有任何工作,我不太清楚为什么。这是代码:
对话窗口初始化;
def begin_grab(self):
self.GrabIm=qtg.QDialog(self)
self.GrabIm.ui=Ui_Dialog()
self.GrabIm.ui.setupUi(self.GrabIm)
self.GrabIm.show()
对话窗口;
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName(_fromUtf8("Dialog"))
...
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), self.accept)
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), Dialog.reject)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def accept(self):
if self.radioButton.isChecked()==True: #assume it is true
#Call continuous grabber
print "Grabbing continuously"
Dialog.exec_() #Close it here
else:
#Call trigger server
print "Grabbing triggered"
self.exec_()
持续发生的主要问题是在“acceptog”是一个未知变量的消息中,在accept()函数中,或者如果我使用self.exec_()或类似信息,则说exec_()不是已知属性。如果我尝试接受(self,Dialog),并在connect语句中放置self.accept(Dialog),它也会崩溃。
任何和所有帮助将不胜感激。
答案 0 :(得分:8)
你做错了。您不应该修改Qt Designer生成的代码(Ui_Dialog
)。您应该继承QDialog
并在那里定义accept
:
class MyDialog(QtGui.QDialog):
def __init__(self, parent=None):
super(MyDialog, self).__init__(parent)
self.ui = Ui_Dialog()
self.ui.setupUi(self)
# use new style signals
self.ui.buttonBox.accepted.connect(self.accept)
self.ui.buttonBox.rejected.connect(self.reject)
def accept(self):
if self.ui.radioButton.isChecked(): # no need to do ==True
#Call continuous grabber
print "Grabbing continuously"
else:
#Call trigger server
print "Grabbing triggered"
super(MyDialog, self).accept() # call the accept method of QDialog.
# super is needed
# since we just override the accept method
然后将其初始化为:
def begin_grab(self):
self.GrabIm=MyDialog(self)
self.GrabIm.exec_() # exec_() for modal dialog
# show() for non-modal dialog
但是看看你的代码,我不会这样做。让对话框返回accept/reject
,然后在调用者(即主窗口)中执行条件事项:
class MyDialog(QtGui.QDialog):
def __init__(self, parent=None):
super(MyDialog, self).__init__(parent)
self.ui = Ui_Dialog()
self.ui.setupUi(self)
# use new style signals
self.ui.buttonBox.accepted.connect(self.accept)
self.ui.buttonBox.rejected.connect(self.reject)
和来电者代码:
def begin_grab(self):
self.GrabIm=MyDialog(self)
if self.GrabIm.exec_(): # this will be True if dialog is 'accept'ed, False otherwise
if self.GrabIm.ui.radioButton.isChecked():
#Call continuous grabber
print "Grabbing continuously"
else:
#Call trigger server
print "Grabbing triggered"
答案 1 :(得分:0)
您可以重新实现closeEvent,它将帮助您在Dialog退出
之前执行某些过程def closeEvent(self,event):
print "I am here"
event.accept()