PyQT5之为槽函数传递参数
1.PyQT5图像2.PyQT5水平垂直布局3.PyQT5之图片左右翻页4.PyQT5之QPushButton和布局5.PyQT5之label6.PyQT5之选择图片7.PyQT5之自定义信号8.PyQT5之窗口9.PyQT5之菜单栏和工具栏10.PyQT5之QComboBox11.PyQT5之Checkbox12.PyQT5之QRadioButton13.PyQT5之单行文本输入到多行显示窗14.PyQT5之网格布局多图片显示15.PyQtGraph绘制折线图16.PyQT5之PyQtGraph实时数据显示17.PyQT5之窗口最大化最小化18.PyQT5之QSS基础/子控件选择器19.PyQT5样式设置20.PyQT5绘图21.PyQT5窗口样式设置22.PyQT5之设置窗口控件风格23.PyQT5之多窗口交互24.PyQT5之override覆盖槽函数
25.PyQT5之为槽函数传递参数
26.PyQT5信号与槽的连接27.PyQT5信号刷新时间28.PyQT5之信号关闭窗口29.信号与槽N对N30.PyQT5之多个信号31.PyQT5之QTreeView32.PyQT5内嵌html33.PyQT5加载本地web页面34.PyQT5之QWebEngineView35.PyQT5之QThread36.PyQT5之QTimer37.PyQT5之QStackedWidget38.PyQT5之QTreeWidget-QTabWidget39.PyQT5之QTableWidget40.PyQT5之QListWidget41.PyQT5之QListView42.PyQT5之二维表QTableView43.PyQT5打印机44.PyQT5之QPainter45.PyQT5之QFontDialog46.PyQT5之QInputDialog47.PyQT5之QMessageBox48.PyQT5之QDialog49.PyQT5之多页面切换50.PyQT5之计数器控件QSpinBox51.PyQT5之滑块控件QSlider52.PyQtGraph绘图参考53.PyQtGraph之多图绘制54.PyQtGraph之柱状图55.PyQt5选择文件控件QFileDialog方法一:lambda表达式传递参数
from PyQt5.QtCore import *
from PyQt5 import QtCore
from PyQt5.QtWidgets import *
import sys
class LambdaSlotArg(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("使用Lambda表达式为槽函数传递参数")
self.resize(800, 500)
button1 = QPushButton("按钮1")
button2 = QPushButton("按钮2")
layout = QHBoxLayout()
layout.addWidget(button1)
layout.addWidget(button2)
mainFrame = QWidget()
mainFrame.setLayout(layout)
self.setCentralWidget(mainFrame)
button1.clicked.connect(lambda: self.onButtonClick(10, 20))
button2.clicked.connect(lambda: self.onButtonClick(40, -20))
def onButtonClick(self, m, n):
print("m+n=", m+n)
QMessageBox.information(self, "结果=", str(m+n))
if __name__ == '__main__':
app = QApplication(sys.argv)
main_win = LambdaSlotArg()
main_win.show()
sys.exit(app.exec_())
方法二:
使用Partial对象为槽函数传递参数
from PyQt5.QtCore import *
from PyQt5 import QtCore
from PyQt5.QtWidgets import *
from functools import partial
import sys
class PartialSlotSlotArg(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("使用Lambda表达式为槽函数传递参数")
self.resize(800, 500)
button1 = QPushButton("按钮1")
button2 = QPushButton("按钮2")
x = 20
y = -123
layout = QHBoxLayout()
layout.addWidget(button1)
layout.addWidget(button2)
mainFrame = QWidget()
mainFrame.setLayout(layout)
self.setCentralWidget(mainFrame)
# 方法二
button1.clicked.connect(partial(self.onButtonClick, 10, 20))
button2.clicked.connect(partial(self.onButtonClick, x, y))
def onButtonClick(self, m, n):
print("m+n=", m+n)
QMessageBox.information(self, "结果=", str(m+n))
if __name__ == '__main__':
app = QApplication(sys.argv)
main_win = PartialSlotSlotArg()
main_win.show()
sys.exit(app.exec_())
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