linux 中 QLineEdit 使用 virtualkeyboard 方法

在 Linux 中使用 QLineEdit 控件来调用 virtualkeyboard 方法需要以下步骤：

1. 首先，需要安装 virtualkeyboard 模块。可以使用以下命令来安装：

sudo apt-get install qtvirtualkeyboard-plugin

2. 在应用程序中导入 virtualkeyboard 模块：

from PyQt5.QtWidgets import QApplication, QWidget, QLineEdit
from PyQt5.QtVirtualKeyboard import QVirtualKeyboard

3. 创建 QLineEdit 控件和 QVirtualKeyboard 对象：

class MyWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.line_edit = QLineEdit(self)
        self.virtual_keyboard = QVirtualKeyboard()

4. 在 QLineEdit 控件中调用 virtualkeyboard 方法，并将 QVirtualKeyboard 对象传递给它：

self.line_edit.virtualKeyboard = self.virtual_keyboard

完整代码示例：

from PyQt5.QtWidgets import QApplication, QWidget, QLineEdit
from PyQt5.QtVirtualKeyboard import QVirtualKeyboard

class MyWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.line_edit = QLineEdit(self)
        self.virtual_keyboard = QVirtualKeyboard()
        self.line_edit.virtualKeyboard = self.virtual_keyboard

if __name__ == '__main__':
    app = QApplication([])
    widget = MyWidget()
    widget.show()
    app.exec_()