新手求教，pyqt父子窗口传值

[csdnbuku]

问题一：主窗口弹出子窗口，子窗口传值到主窗口。
网上没有找到相关的demo,都是一些简单的信号槽使用。
思路应该是子窗口emit信号，主窗口槽函数接受信号。
瞎折腾了下，以下是代码：有问题，不知道怎么改，求大神解决
问题二：主窗口使用了样式表，弹出子窗口，为什么子窗口不跟着生效？在Qt中只要主窗口用了样式表，由主窗口弹出的子窗口也是跟着生效的。而在pyqt中却不是这样，有点疑问。

#主窗口
#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys

from PyQt4 import QtCore, QtGui
from fawen import W2

style = """
        .QPushButton{
        border-style:none;
        border:1px solid #C2CCD8; 
        color:#F0F0F0;  
        padding:5px;
        min-height:20px;
        border-radius:5px;
        background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 #4D4D4D,stop:1 #292929);
        }
	"""


class MyForm(QtGui.QDialog):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
     
      
    
       
        self.lineEdit = QtGui.QLineEdit()
        self.button = QtGui.QPushButton(u'子窗口',self)
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.lineEdit)
        layout.addWidget(self.button)
        self.setLayout(layout)
        self.setWindowTitle(u'父窗口')

        self.button.clicked.connect(self.child)
        self.setStyleSheet(style)

    def child(self):
        print u'弹出子窗口'
        self.w2 = W2()
        self.connect(self.w2, QtCore.SIGNAL("myclicked()"), self.recv)
        self.w2.show()
      
        
    @QtCore.pyqtSlot(str) 
    def recv(self,s):
        print u'接受到子窗口值'
        print s

    

      
 

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = MyForm()
    myapp.show()
    sys.exit(app.exec_())

#子窗口fawen.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt4 import QtCore, QtGui






class W2(QtGui.QDialog):

    myclicked = QtCore.pyqtSignal(str)   
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
     
        
        self.lineEdit = QtGui.QLineEdit()
        self.button = QtGui.QPushButton(u'发文',self)
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.lineEdit)
        layout.addWidget(self.button)
        self.setLayout(layout)
        self.setWindowTitle(u'子窗口')


        self.button.clicked.connect(self.infosend)


    def infosend(self):
        str = self.lineEdit.text()
        self.myclicked.emit(str)

        print str

        
     

  
 

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = W2()
    myapp.show()
    sys.exit(app.exec_())

[csdnbuku]

[csdnbuku]

刚才又百度找了下，胡乱试了下。 第一个问题已经解决了。 还有第二个问题。

[csdnbuku]

父子窗口传值这一点已经搞清楚了。就是第二个问题现在有点疑问了。

[yingyangcz]

第二个问题也解决了，self改成全局指针就行了。

[qcs555shen]

请问你是怎么解决的，能共享代码吗？

[baidu_36542066]

import sys from PyQt4 import QtCore, QtGui style = """ .QPushButton{ border-style:none; border:1px solid #C2CCD8; color:#F0F0F0; padding:5px; min-height:20px; border-radius:5px; background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 #4D4D4D,stop:1 #292929); } """ class W2(QtGui.QDialog): def __init__(self, parent=None): QtGui.QWidget.__init__(self, parent) self.lineEdit = QtGui.QLineEdit() self.label1 = QtGui.QLabel(u"从父窗口接收") self.label2 = QtGui.QLabel(u"发送给父窗口") self.lineEdit1 = QtGui.QLineEdit() self.lineEdit2 = QtGui.QLineEdit() self.button2 = QtGui.QPushButton(u'发送',self) layout = QtGui.QGridLayout() layout.addWidget(self.label1,0,0) layout.addWidget(self.lineEdit1,0,1) layout.addWidget(self.label2,1,0) layout.addWidget(self.lineEdit2,1,1) layout.addWidget(self.button2,2,1) self.setLayout(layout) self.setStyleSheet(style) self.button2.clicked.connect(self.transfer) def receive(self,s): print (u'接受到父窗口值') self.lineEdit1.setText(str(s)) def transfer(self): str = self.lineEdit2.text() self.emit(QtCore.SIGNAL("transfer_father"),str) class MyForm(QtGui.QDialog): def __init__(self, parent=None): QtGui.QWidget.__init__(self, parent) self.setWindowTitle(u'父窗口') self.label1 = QtGui.QLabel(u"从子窗口接收") self.label2 = QtGui.QLabel(u"发送给子窗口") self.lineEdit1 = QtGui.QLineEdit() self.lineEdit2 = QtGui.QLineEdit() self.button1 = QtGui.QPushButton(u'子窗口',self) self.button2 = QtGui.QPushButton(u'发送',self) layout = QtGui.QGridLayout() layout.addWidget(self.label1,0,0) layout.addWidget(self.lineEdit1,0,1) layout.addWidget(self.label2,1,0) layout.addWidget(self.lineEdit2,1,1) layout.addWidget(self.button1,2,0) layout.addWidget(self.button2,2,1) self.setLayout(layout) self.button1.clicked.connect(self.child) self.button2.clicked.connect(self.transfer) self.setStyleSheet(style) def child(self): print (u'弹出子窗口') self.w2 = W2() self.connect(self.w2, QtCore.SIGNAL("transfer_father"), self.receive) self.w2.show() self.w2.connect(self, QtCore.SIGNAL("transfer_child"), self.w2.receive) @QtCore.pyqtSlot(str) def receive(self,s): print (u'接受到子窗口值') self.lineEdit1.setText(str(s)) def transfer(self): str = self.lineEdit2.text() self.emit(QtCore.SIGNAL("transfer_child"),str) if __name__ == "__main__": app = QtGui.QApplication(sys.argv) myapp = MyForm() myapp.show() sys.exit(app.exec_())

[baidu_36542066]

引用 5 楼 qcs555shen 的回复:

请问你是怎么解决的，能共享代码吗？

参见楼上