我有两个单独的文件,一个创建系统任务栏图标和上下文菜单,另一个创建用于接受用户输入的窗口。
traywindow.py
包含以下内容:
import sys
import os
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QWidget, QLabel, QLineEdit
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtCore import QSize
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setMinimumSize(QSize(320, 172))
self.setWindowTitle("Set Account")
# Setup username field
self.username_label = QLabel(self)
self.username_label.setText('Username')
self.username_field = QLineEdit(self)
self.username_label.move(45, 20)
self.username_field.move(115, 23)
self.username_field.resize(150, 25)
# Setup OK button
pybutton = QPushButton('OK', self)
pybutton.clicked.connect(self.buttonClicked)
pybutton.resize(100,32)
pybutton.move(110, 128)
def buttonClicked(self):
print('Username: ' + self.username_field.text())
def displayWindow():
app = QtWidgets.QApplication(sys.argv)
preferences_window = MainWindow()
preferences_window.show()
sys.exit(app.exec_())
if __name__ == "__main__":
displayWindow()
哪个会产生:
trayapp.py
包含以下内容:
import os
import sys
import traywindow
from PyQt5 import QtWidgets, QtCore, QtGui
class SystemTrayIcon(QtWidgets.QSystemTrayIcon):
def __init__(self, icon, parent=None):
QtWidgets.QSystemTrayIcon.__init__(self, icon, parent)
menu = QtWidgets.QMenu(parent)
prefs_action = menu.addAction('Preferences...')
self.setContextMenu(menu)
prefs_action.triggered.connect(self.setPrefs)
def setPrefs(self):
traywindow.displayWindow()
def main(image):
app = QtWidgets.QApplication(sys.argv)
w = QtWidgets.QWidget()
trayIcon = SystemTrayIcon(QtGui.QIcon(image), w)
trayIcon.show()
sys.exit(app.exec_())
if __name__ == '__main__':
icon = 'icon.png'
main(icon)
哪个会产生:
我想从上下文菜单中启动该窗口,因此当我单击Preferences...
时,它将打开Set Account
窗口,当我填写该字段并单击OK
时,将其捕获到变量中/将其作为参数传递到trayapp.py
文件中。当前,当我点击Preferences...
时,我在上面的代码中尝试这样做:
Traceback (most recent call last):
File "/Users/Username/Downloads/trayapp.py", line 17, in setPrefs
traywindow.displayWindow()
File "/Users/Username/Downloads/traywindow.py", line 36, in displayWindow
sys.exit(app.exec_())
SystemExit: -1
[Finished in 3.0s with exit code -6]
我是PyQt5的新手,感觉自己缺少一些基本知识。从错误的角度来看,我认为这与最后调用每个文件以生成其UI的方式有关,但是到目前为止,我在文档中都没有找到答案。
答案 0 :(得分:1)
您只能拥有一个QApplication,并在displayWindow中创建第二个QApplication,而是创建一个MainWindow并且不调用displayWindow。
def setPrefs(self):
self.window = traywindow.MainWindow()
self.window.show()