我在MacOSX上学习Pyside QProgressBar
。当我像下面这样使用QProgressBar时,它只表示0%或100%。如何顺利制作QProgressBar?有没有办法做到这一点?
from PySide.QtGui import QApplication, QProgressBar, QWidget
from PySide.QtCore import QTimer
import time
app = QApplication([])
pbar = QProgressBar()
pbar.setMinimum(0)
pbar.setMaximum(100)
pbar.show()
def drawBar():
global pbar
pbar.update()
t = QTimer()
t.timeout.connect(drawBar)
t.start(100)
for i in range(1,101):
time.sleep(0.1)
pbar.setValue(i)
app.exec_()
答案 0 :(得分:3)
摆脱这段代码:
for i in range(1,101): # this won't work, because
time.sleep(0.1) # Qt's event loop can't run while
pbar.setValue(i) # you are forcing the thread to sleep
而是添加一个全局变量p:
p = 0
并在drawBar()函数中增加它:
def drawBar():
global pbar
global p
p = p + 1
pbar.setValue(p)
pbar.update()
答案 1 :(得分:0)
QPropertyAnimation易于使用,它可以为您提供顺畅的更改。
animation = QtCore.QPropertyAnimation(pbar, "value")
animation.setDuration(???)
animation.setStartValue(0)
animation.setEndValue(100)
animation.start()
编辑后的帖子:
只需用我建议的代码
替换pbar.show()和app.exec()之间的所有内容以下是完整的代码:
from PyQt5.QtWidgets import QWidget, QProgressBar, QApplication
from PyQt5.QtCore import QTimer, QPropertyAnimation
app = QApplication([])
pbar = QProgressBar()
pbar.setMinimum(0)
pbar.setMaximum(100)
pbar.show()
animation = QPropertyAnimation(pbar, "value")
animation.setDuration(2000)
animation.setStartValue(0)
animation.setEndValue(100)
animation.start()
app.exec_()