{"id":1157,"date":"2019-11-12T11:52:28","date_gmt":"2019-11-12T03:52:28","guid":{"rendered":"http:\/\/www.yumefx.com\/?p=1157"},"modified":"2021-03-04T17:40:04","modified_gmt":"2021-03-04T09:40:04","slug":"pyqt5%e5%a4%9a%e7%ba%bf%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=1157","title":{"rendered":"pyqt5\u591a\u7ebf\u7a0b"},"content":{"rendered":"\n

\u5f53\u4f7f\u7528pyqt\u8fdb\u884cGUI\u5de5\u5177\u7f16\u5199\u65f6\uff0c\u5f80\u5f80\u4f1a\u9047\u5230\u5904\u7406\u7f51\u7edc\u4f20\u8f93\u6570\u636e\u6216\u8005\u6587\u4ef6\u8bfb\u5199\u7b49\u9700\u8981\u6d88\u8017\u4e00\u5b9a\u65f6\u95f4\u7684\u64cd\u4f5c\u3002<\/p>\n

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from PyQt5 import QtWidgets, QtCore <\/span>\nimport sys <\/span>\nfrom PyQt5.QtCore import * <\/span>\nimport time     <\/span>\n<\/span>\nclass Runthread(QtCore.QThread):     <\/span>\n     #  \u901a\u8fc7\u7c7b\u6210\u5458\u5bf9\u8c61\u5b9a\u4e49\u4fe1\u53f7\u5bf9\u8c61<\/span>\n     _signal = pyqtSignal(str) <\/span>\n<\/span>\n    def __init__(self):<\/span>\n        super(Runthread, self).__init__()<\/span>\n<\/span>\n    def __del__(self):<\/span>\n        self.wait()<\/span>\n<\/span>\n    def run(self):<\/span>\n        for i in range(100):<\/span>\n            time.sleep(0.05)<\/span>\n            self._signal.emit(str(i))  # \u6ce8\u610f\u8fd9\u91cc\u4e0e_signal = pyqtSignal(str)\u4e2d\u7684\u7c7b\u578b\u76f8\u540c<\/span>\n        self._signal.emit(str(100))<\/span>\n<\/span>\n<\/span>\nclass Example(QtWidgets.QWidget):   <\/span>\n <\/span>\n    def __init__(self):<\/span>\n        super().__init__()<\/span>\n        # \u6309\u94ae\u521d\u59cb\u5316<\/span>\n        self.button = QtWidgets.QPushButton('\u5f00\u59cb', self)<\/span>\n        self.button.setToolTip('\u8fd9\u662f\u4e00\u4e2a <b>QPushButton<\/b> widget')<\/span>\n        self.button.resize(self.button.sizeHint())<\/span>\n        self.button.move(120, 80)<\/span>\n        self.button.clicked.connect(self.start_login)  # \u7ed1\u5b9a\u591a\u7ebf\u7a0b\u89e6\u53d1\u4e8b\u4ef6<\/span>\n<\/span>\n        # \u8fdb\u5ea6\u6761\u8bbe\u7f6e<\/span>\n        self.pbar = QtWidgets.QProgressBar(self)<\/span>\n        self.pbar.setGeometry(50, 50, 210, 25)<\/span>\n        self.pbar.setValue(0)<\/span>\n<\/span>\n        # \u7a97\u53e3\u521d\u59cb\u5316<\/span>\n        self.setGeometry(300, 300, 300, 200)<\/span>\n        self.setWindowTitle('OmegaXYZ.com')<\/span>\n        self.show()<\/span>\n<\/span>\n        self.thread = None  # \u521d\u59cb\u5316\u7ebf\u7a0b<\/span>\n<\/span>\n    def start_login(self):<\/span>\n        # \u521b\u5efa\u7ebf\u7a0b<\/span>\n        self.button.setEnabled(False)<\/span>\n        self.thread = Runthread()<\/span>\n        # \u8fde\u63a5\u4fe1\u53f7<\/span>\n        self.thread._signal.connect(self.call_backlog)  # \u8fdb\u7a0b\u8fde\u63a5\u56de\u4f20\u5230GUI\u7684\u4e8b\u4ef6<\/span>\n        # \u5f00\u59cb\u7ebf\u7a0b<\/span>\n        self.thread.start()<\/span>\n<\/span>\n    def call_backlog(self, msg):<\/span>\n        self.pbar.setValue(int(msg))  # \u5c06\u7ebf\u7a0b\u7684\u53c2\u6570\u4f20\u5165\u8fdb\u5ea6\u6761<\/span>\n        if msg == '100':<\/span>\n            #self.thread.terminate()<\/span>\n            del self.thread<\/span>\n            self.button.setEnabled(True)   <\/span>\n<\/span>\n if name == \"main\":     <\/span>\n     app = QtWidgets.QApplication(sys.argv)     <\/span>\n     myshow = Example()     <\/span>\n     myshow.show()     <\/span>\n     sys.exit(app.exec_()) <\/span>\n<\/pre>\n\n\n\n
\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u662f\u901a\u8fc7\u7ee7\u627fQThread\u7c7b\uff0c\u5e76\u91cd\u5199\u8be5\u7c7b\u7684run\u65b9\u6cd5\uff0c\u5c06\u4e1a\u52a1\u903b\u8f91\u8ba1\u7b97\u653e\u8fdbrun\u91cc\u8fd0\u884c\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a QThread\u53ea\u6709run\u51fd\u6570\u662f\u5728\u65b0\u7ebf\u7a0b\u91cc\u7684\uff0c\u5176\u4ed6\u6240\u6709\u51fd\u6570\u90fd\u5728QThread\u751f\u6210\u7684\u7ebf\u7a0b\u91cc\u3002<\/strong><\/p>\n
\u4f46\u662f\u56e0\u4e3aQThread\u4f5c\u4e3a\u7ebf\u7a0b\u7ba1\u7406\u5668\uff0c\u7ee7\u627fQThread\u7c7b\u6765\u5b9e\u73b0\u4e1a\u52a1\u903b\u8f91\u7684\u505a\u6cd5\u88abQT\u4f5c\u8005\u591a\u6b21\u6279\u8bc4\uff0c\u6240\u4ee5\u4e0b\u9762\u8bf4\u4e00\u4e0b\u591a\u7ebf\u7a0b\u7684\u6b63\u786e\u59ff\u52bf\u3002<\/p>\n\n\n\n
from PyQt5.QtWidgets import QApplication, QLabel, QWidget, QGridLayout<\/span>\nfrom PyQt5.QtCore import QThread, QObject, pyqtSignal, pyqtSlot <\/span>\n<\/span>\nimport time <\/span>\nimport sys <\/span>\n<\/span>\nclass Worker(QObject):<\/span>\n    finished = pyqtSignal()<\/span>\n    intReady = pyqtSignal(int)<\/span>\n<\/span>\n    @pyqtSlot()<\/span>\n    def work(self): # A slot takes no params<\/span>\n        for i in range(1, 100):<\/span>\n            time.sleep(1)<\/span>\n            self.intReady.emit(i)<\/span>\n        self.finished.emit()<\/span>\n<\/span>\n<\/span>\nclass Form(QWidget):<\/span>\n    def __init__(self):<\/span>\n       super().__init__()<\/span>\n       self.label = QLabel(\"0\")<\/span>\n<\/span>\n       # 1 - create Worker and Thread inside the Form<\/span>\n       self.worker = Worker()  # no parent!<\/span>\n       self.thread = QThread()  # no parent! <\/span>\n<\/span>\n       self.worker.intReady.connect(self.updateLabel) <\/span>\n       self.worker.moveToThread(self.thread) <\/span>\n       self.worker.finished.connect(self.thread.quit) <\/span>\n       self.thread.started.connect(self.worker.work) <\/span>\n       #self.thread.finished.connect(app.exit) <\/span>\n<\/span>\n       self.thread.start() <\/span>\n       self.initUI() <\/span>\n<\/span>\n    def initUI(self): <\/span>\n        grid = QGridLayout() <\/span>\n        self.setLayout(grid) <\/span>\n        grid.addWidget(self.label,0,0) <\/span>\n<\/span>\n        self.move(300, 150) <\/span>\n        self.setWindowTitle('thread test') <\/span>\n<\/span>\n    def updateLabel(self, i): <\/span>\n        self.label.setText(\"{}\".format(i)) <\/span>\n        #print(i) <\/span>\n<\/span>\n<\/span>\n app = QApplication(sys.argv)<\/span>\n form = Form()<\/span>\n form.show()<\/span>\n sys.exit(app.exec_()) <\/span>\n<\/pre>\n\n\n\n
\u5982\u4e0a\u8fd9\u4e2a\u4f8b\u5b50\uff0c\u5c06\u4e1a\u52a1\u903b\u8f91\u5199\u5230\u4e00\u4e2a\u7ee7\u627fQObject\u7684\u5b50\u7c7b\u91cc\uff0c\u518d\u5efa\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u8c03\u7528\u7ee7\u627f\u81ea\u7236\u7c7b\u7684moveToThread\u65b9\u6cd5\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u628a\u8be5\u5bf9\u8c61\u653e\u5728\u7ebf\u7a0b\u91cc\u9762\u3002<\/p>\n
\u5269\u4e0b\u7684\u5de5\u4f5c\u5c31\u662f\u901a\u8fc7\u4fe1\u53f7\u548c\u69fd\u7684\u673a\u5236\u5904\u7406\u4e1a\u52a1\u903b\u8f91\u548c\u8fd4\u56de\u7ed3\u679c\u4e86\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u69fd\u51fd\u6570\u6240\u5728\u7684\u7c7b\u5728\u54ea\u4e2a\u7ebf\u7a0b\uff0c\u8fd9\u4e2a\u51fd\u6570\u5c31\u5728\u54ea\u4e2a\u7ebf\u7a0b\u6267\u884c\u3002<\/p>\n
\u5177\u4f53\u67e5\u770bKionWong<\/a>\u3002<\/p>\n
\u5176\u4ed6\u4f8b\u5b50\u53ef\u53c2\u8003PyQt5\u591a\u7ebf\u7a0b\u76f8\u5173\u4e00\u4e9b\u4f8b\u5b50<\/a>\uff0c\u4e0b\u9762\u8bf4\u8bf4\u5176\u4ed6\u76f8\u5173\u3002<\/p>\n
1.PyQt5GUI\u7f16\u7a0b\u65f6\u5982\u679c\u51fa\u73b0\u9519\u8bef\uff0c\u754c\u9762\u505c\u6b62\u54cd\u5e94\u4f46\u4e0d\u4f1a\u6253\u5370\u9519\u8bef\u4fe1\u606f\uff0c\u8c03\u8bd5bug\u975e\u5e38\u4e0d\u4fbf\u3002<\/p>\n
\"\"<\/p>\n
\u5982\u56fe\uff0c\u5728pycharm\u4e2d\uff0c\u83dc\u5355Run-Edit Configurations\uff0c\u7136\u540e\u52fe\u9009 Emulate terminal in output console \u9009\u9879\u5373\u53ef\u3002<\/p>\n
\u8f6c\u8f7d\u81eafeiqixia<\/a>\u3002<\/p>\n
 <\/p>\n\n\n\n
\n\n\n\n
\u751f\u6d3b\u53ea\u80fd\u5012\u7740\u88ab\u7406\u89e3\uff0c
\u5fc5\u987b\u6b63\u7740\u88ab\u7ecf\u5386\u3002
\u6211\u4eec\u6c38\u8fdc\u90fd\u4e0d\u53ef\u80fd\u771f\u6b63\u7684\u53ca\u65f6\u7406\u89e3\u751f\u6d3b\uff0c
\u56e0\u4e3a\u5728\u4efb\u4f55\u4e00\u4e2a\u7279\u5b9a\u65f6\u523b\uff0c
\u6211\u4eec\u6839\u672c\u65e0\u6cd5\u627e\u5230\u5fc5\u8981\u7684\u53c2\u8003\u7cfb\u6765\u7406\u89e3\u5b83\u3002<\/p>\n
\u2014\u2014\u514b\u5c14\u51ef\u5ed3\u5c14<\/p>\n","protected":false},"excerpt":{"rendered":"
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