diff --git a/pyqt5/CODE/元件使用範例/qt04_closeMainWin.py b/pyqt5/CODE/元件使用範例/qt04_closeMainWin.py
new file mode 100644
index 0000000..db7a07f
--- /dev/null
+++ b/pyqt5/CODE/元件使用範例/qt04_closeMainWin.py
@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*- 
+'''
+    【簡介】
+    PyQT5中關閉視窗範例
+ 
+  
+'''
+
+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.resize(330,100)  
+		self.setWindowTitle('關閉主視窗範例') 		
+		self.button1 = QPushButton('關閉主視窗')  		
+		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 ):  
+        #sender 是發送訊號的物件，此處傳送訊號的物件是button1按鈕 
+		sender = self.sender()         
+		print( sender.text() + ' 被按下了')
+		qApp = QApplication.instance()
+		qApp.quit()
+		
+if __name__ == "__main__":  
+	app = QApplication(sys.argv)  
+	form = WinForm()  
+	form.show()  
+	sys.exit(app.exec_())