python音量调节器
这个是用pyqt5实现的。具体原理我也记不清了。不过有一个问题，就是它的音量标签不刷新。还请大家解决一下。
# -*- coding:utf-8 -*-
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import *
from ctypes import cast, POINTER
from comtypes import CLSCTX_ALL
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume
devices = AudioUtilities.GetSpeakers()
interface = devices.Activate(IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))
volumes = {0: -65.25, 1: -56.99, 2: -51.67, 3: -47.74, 4: -44.62, 5: -42.03, 6: -39.82, 7: -37.89, 8: -36.17, 9: -34.63,
10: -33.24, 11: -31.96, 12: -30.78, 13: -29.68, 14: -28.66, 15: -27.7, 16: -26.8, 17: -25.95, 18: -25.15,
19: -24.38, 20: -23.65, 21: -22.96, 22: -22.3, 23: -21.66, 24: -21.05, 25: -20.46, 26: -19.9, 27: -19.35,
28: -18.82, 29: -18.32, 30: -17.82, 31: -17.35, 32: -16.88, 33: -16.44, 34: -16.0, 35: -15.58, 36: -15.16,
37: -14.76, 38: -14.37, 39: -13.99, 40: -13.62, 41: -13.26, 42: -12.9, 43: -12.56, 44: -12.22, 45: -11.89,
46: -11.56, 47: -11.24, 48: -10.93, 49: -10.63, 50: -10.33, 51: -10.04, 52: -9.75, 53: -9.47, 54: -9.19,
55: -8.92,
56: -8.65, 57: -8.39, 58: -8.13, 59: -7.88, 60: -7.63, 61: -7.38, 62: -7.14, 63: -6.9, 64: -6.67, 65: -6.44,
66: -6.21, 67: -5.99, 68: -5.76, 69: -5.55, 70: -5.33, 71: -5.12, 72: -4.91, 73: -4.71, 74: -4.5, 75: -4.3,
76: -4.11, 77: -3.91, 78: -3.72, 79: -3.53, 80: -3.34, 81: -3.15, 82: -2.97, 83: -2.79, 84: -2.61, 85: -2.43,
86: -2.26, 87: -2.09, 88: -1.91, 89: -1.75, 90: -1.58, 91: -1.41, 92: -1.25, 93: -1.09, 94: -0.93, 95: -0.77,
96: -0.61, 97: -0.46, 98: -0.3, 99: -0.15, 100: 0.0
}
volume.SetMute(0, None)
volume.SetMasterVolumeLevel(-65.25 + 8.26, None)
class MainWindow(QWidget):
def __init__(self):
super().__init__()
sld = QSlider(Qt.Horizontal, self)
sld.setFocusPolicy(Qt.NoFocus)
sld.setGeometry(30, 55, 100, 30)
sld.setMinimum(0)
sld.setMaximum(100)
sld.valueChanged.connect(changeValue)
showVolume = QLabel(self)
showVolume.setText(str(sld.value()) + '%')
showVolume.setGeometry(120, 80, 150, 65)
self.setMinimumSize(160, 150)
self.setMaximumSize(160, 150)
self.setWindowTitle('音量调节器')
self.show()
def changeValue(value):
volume.SetMasterVolumeLevel(volumes[value], None)
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = MainWindow()
sys.exit(app.exec_())
