77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
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# -*- coding: utf-8 -*-
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'''
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【簡介】
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PyQT5中Qlabel範例
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'''
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from PyQt5.QtWidgets import QApplication, QLabel ,QWidget, QVBoxLayout
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from PyQt5.QtCore import Qt
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from PyQt5.QtGui import QPixmap ,QPalette
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import sys
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class WindowDemo(QWidget):
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def __init__(self ):
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super().__init__()
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label1 = QLabel(self)
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label2 = QLabel(self)
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label3 = QLabel(self)
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label4 = QLabel(self)
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#1 初始化標籤控制項
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label1.setText("這是一個文字標籤。")
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label1.setAutoFillBackground(True)
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palette = QPalette()
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palette.setColor(QPalette.Window,Qt.blue)
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label1.setPalette(palette)
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label1.setAlignment( Qt.AlignCenter)
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label2.setText("<a href='#'>歡迎使用Python GUI應用程式</a>")
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label3.setAlignment( Qt.AlignCenter)
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label3.setToolTip('這是一個圖片標籤')
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label3.setPixmap( QPixmap("./images/python.jpg"))
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label4.setText("<A href='http://www.cnblogs.com/wangshuo1/'>歡迎連結信平的小屋</a>")
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label4.setAlignment( Qt.AlignRight)
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label4.setToolTip('這是一個超連結標籤')
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#2 在視窗佈局中加入控制項
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vbox = QVBoxLayout()
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vbox.addWidget(label1)
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vbox.addStretch()
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vbox.addWidget(label2)
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vbox.addStretch()
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vbox.addWidget( label3 )
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vbox.addStretch()
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vbox.addWidget( label4)
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#3 允許label1控制項存取超連結
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label1.setOpenExternalLinks(True)
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# 開放允許存取超連結，預設是不允許，必須透過 setOpenExternalLinks(True)開放
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label4.setOpenExternalLinks( False )
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# 點擊文字方塊繫結槽事件
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label4.linkActivated.connect( link_clicked )
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# 滑過文字方塊繫結槽事件
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label2.linkHovered.connect( link_hovered )
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label1.setTextInteractionFlags( Qt.TextSelectableByMouse )
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self.setLayout(vbox)
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self.setWindowTitle("QLabel範例")
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def link_hovered():
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print("當滑鼠滑過label-2標籤時，觸發事件。")
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def link_clicked():
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print("當用滑鼠點擊label-4標籤時，觸發事件。" )
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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win = WindowDemo()
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win.show()
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sys.exit(app.exec_())
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