python - 在PyQt5中关闭/打开vlc播放器后如何使用QWinThumbnailToolBar恢复任务栏缩略图

Question

我在 pyqt5 中嵌入了 python vlc 来制作视频播放器。但我有一个问题是当视频开始播放时，它需要整个任务栏缩略图只显示它的视频，而不是窗口屏幕中存在的其他项目。关闭视频后任务栏变成完全空白的白色，不显示任何内容。这是图片示例。
1-播放前

2.播放时(看没有按钮)

3.停止后
我正在尝试恢复

QWinThumbnailToolBar in self.videoframe.showEvent()

这是我的完整代码:

import sys
from PyQt5.QtWidgets import *
from PyQt5 import QtWinExtras 
import vlc

class Player(QMainWindow):
    """A simple Media Player using VLC and Qt
    """
    def __init__(self, master=None):
        QMainWindow.__init__(self, master)
        self.setWindowTitle("Media Player")
        self.mainframe=QFrame(self)
        self.setCentralWidget(self.mainframe)
        self.videoframe=QFrame(self.mainframe)
        self.videoframe.setGeometry(0,50,600,400)
        ##Call to set taskbar thumbnail
        self.videoframe.showEvent=self.setthumbnail
        self.instance = vlc.Instance()
        self.player = self.instance.media_player_new()
        self.player.set_hwnd(int(self.videoframe.winId()))
        self.media = self.instance.media_new('C:/Users/mishra/Downloads/Video/kyakar.mp4')
        self.player.set_media(self.media)
        button=QPushButton('Play',self)
        button.setStyleSheet('background:red')
        button.setGeometry(100,0,40,30)
        button.clicked.connect(lambda:[self.videoframe.show(),self.player.play()])
        button1=QPushButton('Close',self)
        button1.setStyleSheet('background:green')
        button1.setGeometry(200,0,40,30)
        button1.clicked.connect(self.onclose)
    def onclose(self):
        if self.player:
            self.player.stop()
        self.videoframe.hide()
    def setthumbnail(self,event):
        print('Shown')
        self.thumbbar =QtWinExtras.QWinThumbnailToolBar(self)
        self.thumbbar.setWindow(self.windowHandle())        
    
if __name__ == "__main__":
    app = QApplication(sys.argv)
    player = Player()
    player.show()
    player.resize(600, 450)
    sys.exit(app.exec_())

有什么方法可以实现吗？

Answer 1

我为您标记了我所做更改的行。尝试一下:

import sys
from PyQt5.QtWidgets import *
from PyQt5 import QtWinExtras 
from PyQt5.QtWinExtras import QWinThumbnailToolBar, QWinThumbnailToolButton
import vlc   
                                         

class Player(QMainWindow):
    """A simple Media Player using VLC and Qt
    """
    def __init__(self, master=None):
        QMainWindow.__init__(self, master)
        
        self.setWindowTitle("Media Player")
        self.mainframe = QFrame(self)
        self.setCentralWidget(self.mainframe)
        
        self.videoframe = QFrame(self.mainframe)
#-        self.videoframe.setGeometry(0, 50, 600, 400)                               # ---
        self.videoframe.resize(640, 480)                                             # +++
        
# +++  vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv +++     
        # QWinThumbnailToolBar
        self.toolBar = QWinThumbnailToolBar(self)        

        # Prev, Play/Pause, Next
        self.toolBtnPrev = QWinThumbnailToolButton(self.toolBar)
        self.toolBtnPrev.setToolTip('Prev')
        self.toolBtnPrev.setIcon(self.style().standardIcon(QStyle.SP_MediaSkipBackward))
        self.toolBtnPrev.clicked.connect(self.set_prev)
        self.toolBar.addButton(self.toolBtnPrev)

        self.toolBtnControl = QWinThumbnailToolButton(self.toolBar)
        self.toolBtnControl.setToolTip('Play')                       
        self.toolBtnControl.setProperty('status', 0)
        self.toolBtnControl.setIcon(self.style().standardIcon(QStyle.SP_MediaPlay))
        self.toolBtnControl.clicked.connect(self.set_control)
        self.toolBar.addButton(self.toolBtnControl)

        self.toolBtnNext = QWinThumbnailToolButton(self.toolBar)
        self.toolBtnNext.setToolTip('Next')
        self.toolBtnNext.setIcon(self.style().standardIcon(QStyle.SP_MediaSkipForward))
        self.toolBtnNext.clicked.connect(self.set_next)
        self.toolBar.addButton(self.toolBtnNext)
# +++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++        
        
        
        # Call to set taskbar thumbnail
#-        self.videoframe.showEvent = self.setthumbnail                           # ---
        self.instance = vlc.Instance()
        self.player = self.instance.media_player_new()
        self.player.set_hwnd(int(self.videoframe.winId()))
        self.media = self.instance.media_new('Samonastrojka.avi')                 # !!! <---
        self.player.set_media(self.media)
        '''
        button = QPushButton('Play',self)
        button.setStyleSheet('background:red')
        button.setGeometry(100,0,40,30)
        button.clicked.connect(lambda:[self.videoframe.show(),self.player.play()])
        button1 = QPushButton('Close',self)
        button1.setStyleSheet('background:green')
        button1.setGeometry(200,0,40,30)
        button1.clicked.connect(self.onclose)
        
    def onclose(self):
        if self.player:
            self.player.stop()
        self.videoframe.hide()
        
    def setthumbnail(self,event):
        print('Shown')
        self.thumbbar = QtWinExtras.QWinThumbnailToolBar(self)
        self.thumbbar.setWindow(self.windowHandle())        
        '''
        
# +++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
    def set_prev(self):
        pass

    def set_next(self):
        pass

    def set_control(self):
        if self.toolBtnControl.property('status') == 0:
            self.toolBtnControl.setToolTip('Pause')
            self.videoframe.show()
            self.player.play()
            self.toolBtnControl.setProperty('status', 1)
            self.toolBtnControl.setIcon(self.style().standardIcon(QStyle.SP_MediaPause))
        else:
            self.toolBtnControl.setProperty('status', 0)
            self.toolBtnControl.setIcon(self.style().standardIcon(QStyle.SP_MediaPlay))        
            self.player.stop()
            self.toolBtnControl.setToolTip('Play')

    def showEvent(self, event):
        super(Player, self).showEvent(event)
        if not self.toolBar.window():
            self.toolBar.setWindow(self.windowHandle())
        
    
if __name__ == "__main__":
    app = QApplication(sys.argv)
    player = Player()
    player.show()
    player.resize(640, 480)
    sys.exit(app.exec_())