如何将SymbolPlotter中的按钮点击信号发送到主窗口中的状态栏并附加新消息
因此,基本上,当我单击模块符号绘图仪中的按钮时,我希望在状态栏中显示一个文本,该状态栏位于main中。类中的Py主窗口
main.py:
import sys
from PyQt5 import QtWidgets as qtw
import SymbolPlotter as sp
import Stylesheet as st
class MainWindow(qtw.QMainWindow):
def __init__(self, speed='1d1s'):
super().__init__()
# 1. create a tab widget in mainwindow
tabs = qtw.QTabWidget(tabShape='triangular')
tabs.setStyleSheet(st.TabBar)
self.setCentralWidget(tabs)
# create a status bar
status_bar = qtw.QStatusBar()
self.setStatusBar(status_bar)
status_bar.showMessage('Ready')
#1 tab to plot data in streaming fashion
SymbolPlotter = sp.SymbolPlotterClass(symbol)
tabs.addTab(SymbolPlotter, f'Online Plotter: {symbol}')
#3 tab to save/update downloaded data to database
DBStorage = dbs.DatabaseStorageClass()
tabs.addTab(DBStorage, 'Database Storage')
# End main UI code
self.show()
def UpdateStatusBarMessage(self, message='empty'):
self.status_bar.showMessage('message')
if __name__ == '__main__':
app = qtw.QApplication(sys.argv)
mw = MainWindow(symbol,speed='1d10ms')
mw.setWindowTitle('Test')
windows_style = qtw.QStyleFactory.create('Fusion')
app.setStyle(windows_style)
sys.exit(app.exec())
在SYMBOL绘图仪中,会发出信号
SYMBOL绘图仪.py
import sys
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtGui as qtg
from PyQt5 import QtCore as qtc
from PyQt5 import QtChart as qtch
from main import MainWindow as mw
import Stylesheet as st
class SymbolPlotterClass(qtw.QWidget):
def __init__(self, symbol):
super().__init__()
# create buttons
button0 = qtw.QPushButton("Select Folder", self)
button0.setStyleSheet(st.b1)
#self.button0.clicked.connect(self.onPressed_btn0)
button0.clicked.connect(lambda: mw.UpdateStatusBarMessage('test message'))
# chart object and viewer
chart = qtch.QChart()
chartview = qtch.QChartView(chart)
# create vertical layout object for page
layout = qtw.QVBoxLayout()
self.setLayout(layout)
# add a horizontal sublayout
layout.addWidget(chartview)
sublayout = qtw.QHBoxLayout()
layout.addLayout(sublayout)
# add widgets to layout
sublayout.addWidget(button0)
# emit signal
def onPressed_btn0(self):
message = 'select folder pressed'
#mw.UpdateStatusBarMessage()
#self.submitted.emit()
if __name__ == '__main__':
pass
根据musicamentes的意见,重新加工为适当的解决方案:
在SymbolPlotter.py模块中:
在main.py中:
我找到了一个解决方案,我把帖子留给需要它的人,尽管我不知道我的解决方案是否正确,但它是有效的:在main.py中,我传递状态栏对象:
在SymbolPlotter中,我使用它: SYMBOL绘图仪.py
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