以下代码可ping网站,并在QTextEdit中打印结果。一键“运行”用于启动ping。我想要另一个按钮“结束”,该按钮可以在运行ping进程时停止它,而无需关闭GUI。但是目前,“结束”按钮关闭整个GUI窗口。您是否对如何停止ping但保留GUI有任何想法,因此我可以通过按“运行”按钮再次启动ping。
import sys
from PyQt5 import QtCore,QtWidgets
class gui(QtWidgets.QMainWindow):
def __init__(self):
super(gui, self).__init__()
self.initUI()
def dataReady(self):
cursor = self.output.textCursor()
cursor.movePosition(cursor.End)
cursor.insertText(str(self.process.readAll()))
self.output.ensureCursorVisible()
def callProgram(self):
# run the process
# `start` takes the exec and a list of arguments
self.process.start('ping',['127.0.0.1'])
def initUI(self):
# Layout are better for placing widgets
layout = QtWidgets.QHBoxLayout()
self.runButton = QtWidgets.QPushButton('Run')
self.runButton.clicked.connect(self.callProgram)
self.runButton1 = QtWidgets.QPushButton('End')
self.runButton1.clicked.connect(self.close)
self.output = QtWidgets.QTextEdit()
layout.addWidget(self.output)
layout.addWidget(self.runButton)
layout.addWidget(self.runButton1)
centralWidget = QtWidgets.QWidget()
centralWidget.setLayout(layout)
self.setCentralWidget(centralWidget)
# QProcess object for external app
self.process = QtCore.QProcess(self)
# QProcess emits `readyRead` when there is data to be read
self.process.readyRead.connect(self.dataReady)
# Just to prevent accidentally running multiple times
# Disable the button when process starts, and enable it when it finishes
self.process.started.connect(lambda: self.runButton.setEnabled(False))
self.process.finished.connect(lambda: self.runButton.setEnabled(True))
#Function Main Start
def main():
app = QtWidgets.QApplication(sys.argv)
ui=gui()
ui.show()
sys.exit(app.exec_())
#Function Main END
if __name__ == '__main__':
main()
最佳答案
您必须将clicked
信号连接到QProcess
kill
插槽:
def initUI(self):
[...]
self.runButton1 = QtWidgets.QPushButton('End')
# self.runButton1.clicked.connect(self.close)
[...]
# QProcess object for external app
self.process = QtCore.QProcess(self)
# QProcess emits `readyRead` when there is data to be read
self.process.readyRead.connect(self.dataReady)
self.runButton1.clicked.connect(self.process.kill)
# Just to prevent accidentally running multiple times
# Disable the button when process starts, and enable it when it finishes
self.process.started.connect(lambda: self.runButton.setEnabled(False))
self.process.finished.connect(lambda: self.runButton.setEnabled(True))
关于python - 如何在不关闭GUI窗口的情况下停止运行PyQt5程序?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/46414272/