pyqt5写一段在界面中lineedit在焦点上是弹出osk虚拟键盘，不在销毁键盘程序

可以使用Qt的QProcess类来启动osk.exe程序，当lineedit获取焦点时，启动osk.exe程序，当lineedit失去焦点时，关闭osk.exe程序。具体实现可以参考以下代码：

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLineEdit
from PyQt5.QtCore import QProcess

class MyWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Virtual Keyboard')

        self.lineEdit = QLineEdit(self)
        self.lineEdit.setGeometry(50, 50, 200, 30)
        self.lineEdit.textChanged.connect(self.onTextChanged)
        self.lineEdit.editingFinished.connect(self.onEditingFinished)

        self.process = QProcess(self)

    def onTextChanged(self, text):
        if self.lineEdit.hasFocus():
            self.process.start('osk.exe')

    def onEditingFinished(self):
        self.process.kill()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    widget = MyWidget()
    widget.show()
    sys.exit(app.exec_())

当lineedit获取焦点时，启动osk.exe程序，当lineedit失去焦点时，关闭osk.exe程序。