按下按钮PyQt5隐藏/显示图片



我有一个工具栏,上面有一个按钮,可以启用/禁用显示一些图片的标签,我该怎么做?我创建了一个函数,我调用它来完成这项工作,但当我运行代码时,我得到的是:

    File "saw_notes_027.py", line 41, in initUI
        showHidePicture.triggered.connect(self.tbody.showPictures())
    TypeError: argument 1 has unexpected type 'NoneType'

这里有一些代码:

class AppBase(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.tbody = Body(self)
        self.setCentralWidget(self.tbody)
        showHidePicture = QAction(QIcon('image20151027_123417794.jpg'), 'Show / Hide Picture', self)
        showHidePicture.setShortcut('Ctrl+I')
        showHidePicture.setStatusTip('Show / Hide Picture')
        showHidePicture.triggered.connect(self.tbody.showPictures())
        [...other code....]
        toolbar = self.addToolBar('Picture')
        toolbar.addAction(showHidePicture)

class Body(QWidget):
    def __init__(self, parent):
        super().__init__(parent)
        self.initBody()
    def initBody(self):
    [...other code....]
    self.grid.addWidget(self.label_exercise, 0, 0)
    self.grid.addWidget(self.combo_exercise, 1, 0)
    self.grid.addWidget(self.label_key, 0, 1)
    self.grid.addWidget(self.combo_key, 1, 1)
    self.grid.addWidget(self.label_font, 0, 2)
    self.grid.addWidget(self.btn_font, 1, 2)
    self.grid.addWidget(self.sld, 2, 0, 1, 3)
    self.grid.addWidget(self.lcd, 2, 3)
    self.grid.addWidget(self.label_note, 3, 0)
    self.grid.addWidget(self.label_string, 3, 1)
    self.grid.addWidget(self.label_finger, 3, 2)
    self.grid.addWidget(self.btn_start, 4, 0)
    self.grid.addWidget(self.btn_exit, 4, 1)
    self.grid.addWidget(self.label_picture, 5, 0, 1, 6)
    self.setLayout(self.grid)
    self.active_pictures = False
    def showPictures(self):
        if self.active_pictures == False:
            self.active_pictures = True
            self.grid.addWidget(self.label_picture, 5, 0, 1, 3)
        else:
            self.active_pictures = False
            self.grid.removeWidget(self.label_picture)
    [...other code....]

谢谢大家。


我修复了我留下的showHidePicture.triggered.connect(self.tbody.showPictures())行,以备其他人需要,我没有错误,但软件的行为是有线的,当我点击它时,它会显示/隐藏其他小部件:

    self.grid.addWidget(self.label_note, 3, 0)
    self.grid.addWidget(self.label_string, 3, 1)
    self.grid.addWidget(self.label_finger, 3, 2)
    self.grid.addWidget(self.btn_start, 4, 0)
    self.grid.addWidget(self.btn_exit, 4, 1)

所以,我仍然需要你们的帮助;)

再次感谢。

此行应该是:

showHidePicture.triggered.connect(self.tbody.showPictures)

我修复了它。感谢@a_manthey_67的第一部分:showHidePicture.triggered.connect(self.tbody.showPictures)

对于第二个问题,我不得不在函数showPictures中添加self.label_picture.setParent(None)行,如下所示:

def showPictures(self):
    if self.active_pictures == False:
        self.active_pictures = True
        self.grid.addWidget(self.label_picture, 5, 0, 1, 6)
    else:
        self.active_pictures = False
        self.grid.removeWidget(self.label_picture)
        self.label_picture.setParent(None)

现在我有一个调整大小的问题,但这是一个不同的主题,我会努力解决。

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