我可以将self.setWindowFlags(Qt.Window | Qt.WindowContextHelpButtonHint | Qt.WindowCloseButtonHint)添加到QMainWindow的构造函数中，该构造函数会添加＆＃39;？＆＃39;按钮。现在，我想向几乎所有UI组件添加上下文帮助信息。如何点击＆＃39;？＆＃39;按钮，然后单击某个ui元素（比如qlistview），弹出一条帮助信息？
以下是我的程序的一部分，以便轻松实现。如何在用户点击“＆＃39;？＆＃39;然后显示帮助消息的QDoubleSpinBox或QListView或任何QPushButtons？
我已经搜索了这个，但似乎有大量的问题和答案是关于如何删除＆＃39;？＆＃39;按钮或如何添加它。实际上没有人处理如何改变按钮的行为。
我还尝试使用setInputMethodHints()为ui组件分配提示，但这种方法并不像我想象的那样接受自定义字符串。
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
APPNAME = 'Mesoscale Brain Explorer'
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setWindowTitle(APPNAME)
self.sidebar = Sidebar()
self.setWindowFlags(Qt.Window | Qt.WindowContextHelpButtonHint | Qt.WindowCloseButtonHint)
self.setup_ui()
def setup_ui(self):
self.pl_frame = QFrame()
splitter = QSplitter(self)
self.enable = lambda yes: splitter.setEnabled(yes)
splitter.setHandleWidth(3)
splitter.setStyleSheet('QSplitter::handle {background: #cccccc;}')
splitter.addWidget(self.sidebar)
splitter.addWidget(self.pl_frame)
self.setCentralWidget(splitter)
self.menu = self.menuBar()
m = self.menu.addMenu('&File')
a = QAction('&New project', self)
a.setShortcut('Ctrl+N')
a.setStatusTip('Create new project')
m.addAction(a)
a = QAction('&Open project', self)
a.setShortcut('Ctrl+O')
a.setStatusTip('Open project')
m.addAction(a)
a = QAction("&Quit", self)
a.setShortcut("Ctrl+Q")
a.setStatusTip('Leave The App')
a.setIcon(QIcon('pics/quit.png'))
m.addAction(a)
about_action = QAction('&About ' + APPNAME, self)
about_action.setStatusTip('About ' + APPNAME)
about_action.setShortcut('F1')
m = self.menu.addMenu('&Project')
m.setEnabled(False)
a = QAction("&Close", self)
a.setStatusTip('Close project')
m.addAction(a)
self.project_menu = m
help_menu = self.menu.addMenu('&Help')
help_menu.addAction(about_action)
class Sidebar(QWidget):
open_pipeconf_requested = pyqtSignal()
open_datadialog_requested = pyqtSignal()
automate_pipeline_requested = pyqtSignal()
x_origin_changed = pyqtSignal(float)
y_origin_changed = pyqtSignal(float)
units_per_pixel_changed = pyqtSignal(float)
def __init__(self, parent=None):
super(Sidebar, self).__init__(parent)
self.x_origin = QDoubleSpinBox()
self.y_origin = QDoubleSpinBox()
self.units_per_pixel = QDoubleSpinBox()
self.setup_ui()
def setup_ui(self):
self.setContentsMargins(4, 6, 5, 0)
vbox = QVBoxLayout()
hbox = QHBoxLayout()
hbox.addWidget(QLabel('Origin:'))
hbox.addWidget(QLabel('Units per pixel:'))
vbox.addLayout(hbox)
hbox2 = QHBoxLayout()
hhbox = QHBoxLayout()
hhbox2 = QHBoxLayout()
hhbox.addWidget(QLabel("X:"))
hhbox.addWidget(self.x_origin)
hhbox.addWidget(QLabel("Y:"))
hhbox.addWidget(self.y_origin)
hhbox2.addWidget(self.units_per_pixel)
hbox2.addLayout(hhbox)
hbox2.addLayout(hhbox2)
vbox.addLayout(hbox2)
self.units_per_pixel.setDecimals(5)
self.units_per_pixel.setMaximum(100000)
self.x_origin.setMaximum(100000)
self.y_origin.setMaximum(100000)
self.pl_list = QListView()
self.pl_list.setIconSize(QSize(18, 18))
self.pl_list.setSelectionMode(QAbstractItemView.ExtendedSelection)
self.pl_list.setEditTriggers(QAbstractItemView.NoEditTriggers)
vbox.addWidget(QLabel('Pipeline:'))
vbox.addWidget(self.pl_list)
pb = QPushButton('&Automation')
pb.clicked.connect(self.automate_pipeline_requested)
vbox.addWidget(pb)
vbox.addSpacerItem(QSpacerItem(0, 1, QSizePolicy.Minimum, QSizePolicy.Expanding))
pb = QPushButton('&Configure Pipeline')
pb.clicked.connect(self.open_pipeconf_requested)
vbox.addWidget(pb)
pb = QPushButton('&Manage Data')
pb.clicked.connect(self.open_datadialog_requested)
vbox.addWidget(pb)
vbox.setStretch(0, 0)
vbox.setStretch(1, 0)
vbox.setStretch(2, 0)
self.setLayout(vbox)
if __name__ == '__main__':
app = QApplication(sys.argv)
app.setApplicationName(APPNAME)
app.setOrganizationName('University of British Columbia')
w = MainWindow()
w.resize(1060, 660)
w.show()
app.exec_()
app.deleteLater()
del w
sys.exit()