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創(chuàng)新互聯(lián)Python教程：python PyQt信號(hào)和插槽的連接
1、為了讓菜單選項(xiàng)和工具欄在用戶點(diǎn)擊它們時(shí)啟動(dòng)，需要將信號(hào)與內(nèi)置插槽連接起來(lái)。
2、QAction物體可以發(fā)出各種信號(hào)。triggered()與插槽連接。
菜單和工具欄中最常用的信號(hào)是.triggered()。用戶每次點(diǎn)擊菜單選項(xiàng)或工具欄按鈕都會(huì)發(fā)出這個(gè)信號(hào)。
實(shí)例
class Window(QMainWindow):
# Snip...
def newFile(self):
# Logic for creating a new file goes here...
self.centralWidget.setText("File > New clicked")
def openFile(self):
# Logic for opening an existing file goes here...
self.centralWidget.setText("File > Open... clicked")
def saveFile(self):
# Logic for saving a file goes here...
self.centralWidget.setText("File > Save clicked")
def copyContent(self):
# Logic for copying content goes here...
self.centralWidget.setText("Edit > Copy clicked")
def pasteContent(self):
# Logic for pasting content goes here...
self.centralWidget.setText("Edit > Paste clicked")
def cutContent(self):
# Logic for cutting content goes here...
self.centralWidget.setText("Edit > Cut clicked")
def helpContent(self):
# Logic for launching help goes here...
self.centralWidget.setText("Help > Help Content... clicked")
def about(self):
# Logic for showing an about dialog content goes here...
self.centralWidget.setText("Help > About... clicked")以上就是python PyQt信號(hào)和插槽的連接方法，希望對(duì)大家有所幫助。更多Python學(xué)習(xí)指路：創(chuàng)新互聯(lián)python教程
本文教程操作環(huán)境：windows7系統(tǒng)、Python 3.9.1，DELL G3電腦。
分享標(biāo)題：創(chuàng)新互聯(lián)Python教程：python PyQt信號(hào)和插槽的連接
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