我在python中创建了以下代码:
import sys
import time
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
app = QGuiApplication(sys.argv)
try:
due = QTime.currentTime()
message = "Alert!"
if len(sys.argv) < 2 :
raise ValueError
hours, min = sys.argv[1].split(":")
due = Qtime(int(hours), int(min))
if not due.isValid():
raise ValueError
if len(sys.argv) > 2 :
message = " ".join(sys.argv[2:])
except ValueError :
message = "Alert: alert.pyw"
if QTime.currentTime() < due :
time.sleep(20) #20 Seconds
label = QLabel("message")
label.setWindowFlags(Qt.SplashScreen)
label.show()
QTimer.setSingleShot(60000, app.quit() )
app.exec__()
但是在执行时,我收到了这个错误:
QWidget: Cannot create a QWidget without QApplication
答案 0 :(得分:0)
这有效:
app = QApplication(sys.argv)
label = QLabel("message")
label.setWindowFlags(Qt.SplashScreen)
label.show()
QTimer.singleShot(6000, app.quit)
app.exec_()