117笔记问答在Python中，当使用PyQt5或PySide2等库创建GUI应用程序时，可能会遇到QPushButton的快捷键冲突问题
- 使用
setShortcut()方法为按钮设置一个快捷键。确保为每个按钮分配一个唯一的快捷键，以避免冲突。例如：
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton
from PyQt5.QtCore import Qt
app = QApplication([])
window = QWidget()
layout = QVBoxLayout(window)
button1 = QPushButton("Button 1")
button1.setShortcut("Ctrl+B")
layout.addWidget(button1)
button2 = QPushButton("Button 2")
button2.setShortcut("Ctrl+C")
layout.addWidget(button2)
window.setLayout(layout)
window.show()
app.exec_()
- 如果需要为多个按钮分配相同的快捷键，可以使用
QShortcut类将快捷键与特定操作关联起来，而不是直接将快捷键分配给按钮。例如：
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QKeySequence
app = QApplication([])
window = QWidget()
layout = QVBoxLayout(window)
button1 = QPushButton("Button 1")
layout.addWidget(button1)
button2 = QPushButton("Button 2")
layout.addWidget(button2)
shortcut = QShortcut(QKeySequence("Ctrl+B"), window)
shortcut.activated.connect(button1.click)
shortcut.activated.connect(button2.click)
window.setLayout(layout)
window.show()
app.exec_()
- 如果仍然遇到快捷键冲突问题，可以考虑使用
QAction代替QPushButton。QAction允许您更灵活地管理快捷键和菜单项。例如：
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QToolButton, QAction
from PyQt5.QtCore import Qt
app = QApplication([])
window = QWidget()
layout = QVBoxLayout(window)
action1 = QAction("Action 1", window)
action1.setShortcut("Ctrl+B")
action1.triggered.connect(lambda: print("Action 1 triggered"))
button1 = QToolButton()
button1.setDefaultAction(action1)
layout.addWidget(button1)
action2 = QAction("Action 2", window)
action2.setShortcut("Ctrl+C")
action2.triggered.connect(lambda: print("Action 2 triggered"))
button2 = QToolButton()
button2.setDefaultAction(action2)
layout.addWidget(button2)
window.setLayout(layout)
window.show()
app.exec_()
通过这些方法，您可以有效地解决QPushButton的快捷键冲突问题。