However, there is a limitation: the signal can only emit the data it was designed to. The receiving slot can use this data to perform different actions in response to the same signal. Many signals also transmit data, providing information about the state change or widget that fired them.
Signals are connected to slots which are functions (or methods) which will be run every time the signal fires. L1.setTextInteractionFlags(Qt.Signals are a neat feature of Qt that allow you to pass messages between different components in your applications. L2.setText(" welcome to Python GUI Programming") It is displayed as label l3 by using setPixmap() method. QPixmap object prepares offscreen image from python.jpg file. So, whenever the mouse hovers over it, the function will be executed. linkHovered signal of l4 is connected to hovered() function. Hence, if this label is clicked, the associated URL will open in the browser. setOpenExternalLinks for l2 is set to true. In this example, QLabel objects l2 and l4 have the caption containing hyperlink. Slot method associated with this signal will be called when the label having embedded hyperlinked is hovered by the mouse. setOpenExternalLinks feature must be set to true. If the label containing embedded hyperlink is clicked, the URL will open. Sr.No.Īligns the text as per alignment constantsĭisplays the selected text from the label (The textInteractionFlag must be set to TextSelectableByMouse)Īssociates the label with any input widgetĮnables or disables wrapping text in the label Given below are the most commonly used methods of QLabel. The following table lists the important methods defined in QLabel class − Plain text, hyperlink or rich text can be displayed on the label. It can also be used as a mnemonic key for other widgets. A QLabel object acts as a placeholder to display non-editable text or image, or a movie of animated GIF.
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