Python事多，做个笔记，区分。

 

PyQt5 Reference Guide

http://pyqt.sourceforge.net/Docs/PyQt5/index.html

 

Qt4 signal:

class CopyFileThread(QtCore.QThread):    signal_process = QtCore.pyqtSignal(str, str, bool)    def __init__(self, parent=None):        super(CopyFileThread, self).__init__(parent)        self.finished.connect(self.taskEnd)    def setSourceAndDestination(self, src, des):        self.source = src        self.des = des        self.status = False    def run(self):        #print "copy -> ", self.source, self.des        # QtCore.QFile.copy(self.source,self.des)        try:            shutil.copy(self.source, self.des)            self.status = True        except:            self.status = False    def taskEnd(self):        self.signal_process.emit(self.source, self.des, self.status)

接受这个signal槽：

@QtCore.pyqtSlot(str, str, bool)    def perThreadCopyEnd(self, src, des, status):        self.taskNum += 1        if (status):            self.throwMessage(">>" + src + "\t->->->->\t" + des + "<
      
       >" + src + "\tT_T T_T T_T\t" + des + "<
       
        >   process end")
       
      

 

Qt5展示的一些发射信号:

from PyQt5.QtCore import QObject, pyqtSignalclass Foo(QObject):    # Define a new signal called 'trigger' that has no arguments.    trigger = pyqtSignal()    def connect_and_emit_trigger(self):        # Connect the trigger signal to a slot.        self.trigger.connect(self.handle_trigger)        # Emit the signal.        self.trigger.emit()    def handle_trigger(self):        # Show that the slot has been called.        print "trigger signal received"

 

信号重载

from PyQt5.QtWidgets import QComboBoxclass Bar(QComboBox):    def connect_activated(self):        # The PyQt5 documentation will define what the default overload is.        # In this case it is the overload with the single integer argument.        self.activated.connect(self.handle_int)        # For non-default overloads we have to specify which we want to        # connect.  In this case the one with the single string argument.        # (Note that we could also explicitly specify the default if we        # wanted to.)        self.activated[str].connect(self.handle_string)    def handle_int(self, index):        print "activated signal passed integer", index    def handle_string(self, text):        print "activated signal passed QString", text

 

 QML:

<1> show 一个qml里的window

import QtQuick 2.0import QtQuick.Window 2.2import QtQuick.Controls 1import QtQuick.Dialogs 1.2Window{    id:root    width:1280    height:720    Rectangle    {        id:rec        color:"#FF2020"        width:100        height:100        anchors.centerIn:parent        border.color:"#202020"        border.width:1    }    MouseArea    {        id:quitArea        anchors.fill:        {            rec        }        onClicked:        {            close()        }    }}

main.py:

from PyQt5 import QtWidgets,QtGui,QtCorefrom PyQt5 import QtQmlfrom PyQt5.QtQuick import QQuickView,QQuickWindowimport sysif __name__ == "__main__":    app = QtGui.QGuiApplication(sys.argv)    eng = QtQml.QQmlApplicationEngine()    eng.load(QtCore.QUrl.fromLocalFile('./UI/main.qml'))    topLevel = eng.rootObjects()[0]    print topLevel    topLevel.show()    app.exec_()

 

创建混合窗口:

 

按钮是QPushButton,下面的白色区域是QtQuickWindow

from PyQt5 import QtWidgets,QtGui,QtCorefrom PyQt5 import QtQmlfrom PyQt5.QtQuick import QQuickView,QQuickWindowimport sysif __name__ == "__main__":    app = QtWidgets.QApplication(sys.argv)    eng = QtQml.QQmlApplicationEngine()    eng.load(QtCore.QUrl.fromLocalFile('./UI/Main.qml'))    topLevel = eng.rootObjects()[0]    print topLevel    #topLevel.show()    layout = QtWidgets.QVBoxLayout()    button = QtWidgets.QPushButton()    button.setText("houdini")    layout.addWidget(button)    mainWidget = QtWidgets.QWidget()    quickWidget = QtWidgets.QWidget.createWindowContainer(topLevel)    #quickWidget.show()    mainWidget.setLayout(layout)    layout.addWidget(quickWidget)    mainWidget.show()    app.exec_()