[英]How to re-display a QDialog after hiding it?
I am working with python and pyqt. 我正在使用python和pyqt。 I have a dialog that I want to temporarily hide.
我有一个对话框要暂时隐藏。 After calling
打电话后
dlg.hide()
I try calling 我尝试打电话
dlg.show()
but nothing happens. 但是什么也没发生。 It is never re-displayed.
它永远不会重新显示。
I am new to pyqt so any help is greatly appreciated. 我是pyqt的新手,因此非常感谢您的帮助。
Thanks in advance. 提前致谢。
You are looking for the exec_
method that makes the dialog modal, see how this works: 您正在寻找使对话框
exec_
模态的exec_
方法,请参见其工作原理:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from PyQt4 import QtCore, QtGui
class myDialog(QtGui.QDialog):
def __init__(self, parent=None):
super(myDialog, self).__init__(parent)
self.dialog = None
self.buttonShow = QtGui.QPushButton(self)
self.buttonShow.setText("Show Dialog")
self.buttonShow.clicked.connect(self.on_buttonShow_clicked)
self.buttonHide = QtGui.QPushButton(self)
self.buttonHide.setText("Close")
self.buttonHide.clicked.connect(self.on_buttonHide_clicked)
self.layout = QtGui.QVBoxLayout(self)
self.layout.addWidget(self.buttonShow)
self.layout.addWidget(self.buttonHide)
@QtCore.pyqtSlot()
def on_buttonHide_clicked(self):
self.accept()
@QtCore.pyqtSlot()
def on_buttonShow_clicked(self):
self.dialog = myDialog(self)
self.dialog.exec_()
class myWindow(QtGui.QWidget):
def __init__(self, parent=None):
super(myWindow, self).__init__(parent)
self.buttonShow = QtGui.QPushButton(self)
self.buttonShow.setText("Show Dialog")
self.buttonShow.clicked.connect(self.on_buttonShow_clicked)
self.layout = QtGui.QVBoxLayout(self)
self.layout.addWidget(self.buttonShow)
self.dialog = myDialog(self)
@QtCore.pyqtSlot()
def on_buttonHide_clicked(self):
self.dialog.accept()
@QtCore.pyqtSlot()
def on_buttonShow_clicked(self):
self.dialog.exec_()
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('myWindow')
main = myWindow()
main.show()
sys.exit(app.exec_())
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