部件中的信号槽通信示例

Author: cxinping

Chapter07/qt07_signalSlotWin.py Chapter07/qt07_signalSlotThreaad.py

@@ -1,39 +1,21 @@
-# -*- coding: utf-8 -*-
-
-"""
-    【简介】
-    部件中的信号槽通信示例
-
-
-"""
-
-
-from PyQt5.QtWidgets import QMainWindow,QHBoxLayout, QPushButton ,  QApplication, QWidget  
-import sys 
-
-class WinForm(QMainWindow):  
-	
-	def __init__(self, parent=None):  
-		super(WinForm, self).__init__(parent)
-		self.setWindowTitle('部件中的信号槽通信')
-     
-		self.button1 = QPushButton('Button 1')  
-		# 
-		self.button1.clicked.connect(self.onButtonClick) 
-        
-		layout = QHBoxLayout()  
-		layout.addWidget(self.button1)  
-        
-		main_frame = QWidget()  
-		main_frame.setLayout(layout)    
-		self.setCentralWidget(main_frame)  
-  
-	def onButtonClick(self ):      
-		print('The button1 被按下了' )   
-		
-        
-if __name__ == "__main__":  
-	app = QApplication(sys.argv)  
-	form = WinForm()  
-	form.show()  
-	sys.exit(app.exec_())
+# -*- coding: utf-8 -*-
+"""
+    【简介】
+    信号和槽例子
+
+
+"""
+     
+from PyQt5.QtWidgets import  QPushButton ,  QApplication, QWidget 
+from  PyQt5.QtWidgets import QMessageBox  
+import sys 
+   
+app =  QApplication(sys.argv)
+widget =  QWidget()
+
+def showMsg():
+     QMessageBox.information(widget, "信息提示框", "ok，弹出测试信息")     
+btn = QPushButton( "测试点击按钮", widget)
+btn.clicked.connect( showMsg)
+widget.show()
+sys.exit(app.exec_())

Chapter07/qt07_widgetSignalSlot01.py

@@ -7,18 +7,16 @@
 
 """
 
-from PyQt5.QtCore import pyqtSignal  
-from PyQt5.QtWidgets import QMainWindow,QHBoxLayout, QPushButton ,  QApplication, QWidget  , QMessageBox
+
+from PyQt5.QtWidgets import QMainWindow,QHBoxLayout, QPushButton ,  QApplication, QWidget  
 import sys 
 
 class WinForm(QMainWindow):  
-	btnlickedSignal = pyqtSignal(int) 
-
+	
 	def __init__(self, parent=None):  
 		super(WinForm, self).__init__(parent)
 		self.setWindowTitle('部件中的信号槽通信')
-        # 声明自定义的信号
-		self.btnlickedSignal.connect(self.getSignal)  
+     
 		self.button1 = QPushButton('Button 1')  
 		# 
 		self.button1.clicked.connect(self.onButtonClick) 
@@ -31,12 +29,7 @@ def __init__(self, parent=None):
 		self.setCentralWidget(main_frame)  
 
 	def onButtonClick(self ):      
-		print('The button1 被按下了' )   		     
-		self.btnlickedSignal.emit(10)
-        
-	def getSignal(self, intVal ): 
-		QMessageBox.information(self, "信息提示框", '收到信号传过来的值：' +  str(intVal) )   
-		
+		print('The button1 被按下了' )   
 
 
 if __name__ == "__main__":  

Chapter07/qt07_winSignalSlot01.py

@@ -2,40 +2,40 @@
 
 """
     【简介】
-    部件中的信号槽传递额外参数示例
+    部件中的信号槽通信示例
 
 
 """
 
-from PyQt5.QtCore import *  
-from PyQt5.QtGui import *  
-from PyQt5.QtWidgets import *
+from PyQt5.QtCore import pyqtSignal  
+from PyQt5.QtWidgets import QMainWindow,QHBoxLayout, QPushButton ,  QApplication, QWidget  , QMessageBox
 import sys 
-from functools import partial
 
 class WinForm(QMainWindow):  
+	btnlickedSignal = pyqtSignal(int) 
+
 	def __init__(self, parent=None):  
-		super(WinForm, self).__init__(parent)  
-		button1 = QPushButton('Button 1')  
-		button2 = QPushButton('Button 2')  
+		super(WinForm, self).__init__(parent)
+		self.setWindowTitle('部件中的信号槽通信')
+        # 声明自定义的信号
+		self.btnlickedSignal.connect(self.getSignal)  
+		self.button1 = QPushButton('Button 1')  
+		# 使用信号连接槽函数，槽函数不用加括号 
+		self.button1.clicked.connect(self.onButtonClick ) 
 
-		button1.clicked.connect(lambda: self.onButtonClick(1)) 
-		
-		button2.clicked.connect(partial(self.onButtonClick, 2))   
-
 		layout = QHBoxLayout()  
-		layout.addWidget(button1)  
-		layout.addWidget(button2)  
-  
+		layout.addWidget(self.button1)  
 		main_frame = QWidget()  
-		main_frame.setLayout(layout)       
+		main_frame.setLayout(layout)    
 		self.setCentralWidget(main_frame)  
 
-	def onButtonClick(self, n):  
-		print('Button {0} 被按下了'.format(n))  
-		QMessageBox.information(self, "信息提示框", 'Button {0} clicked'.format(n))
-             
-  
+	def onButtonClick(self ):      
+		print('The button1 被按下了' )   		     
+		self.btnlickedSignal.emit(10)
+        
+	def getSignal(self, intVal ): 
+		QMessageBox.information(self, "信息提示框", '收到信号传过来的值：' +  str(intVal) )   
+        
 if __name__ == "__main__":  
 	app = QApplication(sys.argv)  
 	form = WinForm()  

Chapter07/qt07_winSignalSlot02.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+
+"""
+    【简介】
+    部件中的信号槽传递额外参数示例
+
+
+"""
+
+from PyQt5.QtCore import *  
+from PyQt5.QtGui import *  
+from PyQt5.QtWidgets import *
+import sys 
+from functools import partial
+
+class WinForm(QMainWindow):  
+	def __init__(self, parent=None):  
+		super(WinForm, self).__init__(parent)  
+		button1 = QPushButton('Button 1')  
+		button2 = QPushButton('Button 2')  
+        
+		button1.clicked.connect(lambda: self.onButtonClick(1)) 
+		
+		button2.clicked.connect(partial(self.onButtonClick, 2))   
+
+		layout = QHBoxLayout()  
+		layout.addWidget(button1)  
+		layout.addWidget(button2)  
+  
+		main_frame = QWidget()  
+		main_frame.setLayout(layout)       
+		self.setCentralWidget(main_frame)  
+  
+	def onButtonClick(self, n):  
+		print('Button {0} 被按下了'.format(n))  
+		QMessageBox.information(self, "信息提示框", 'Button {0} clicked'.format(n))
+             
+  
+if __name__ == "__main__":  
+	app = QApplication(sys.argv)  
+	form = WinForm()  
+	form.show()  
+	sys.exit(app.exec_())