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16-Jul-2015 10:01

For example: In this example, keyboard focus is transferred to the label's buddy (the QLine Edit) when the user presses Alt+P.

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The QLabel widget provides a text or image display. A QLabel can contain any of the following content types: Warning: When passing a QString to the constructor or calling set Text(), make sure to sanitize your input, as QLabel tries to guess whether it displays the text as plain text or as rich text.

The visual appearance of the label can be configured in various ways, and it can be used for specifying a focus mnemonic key for another widget.

When the content is changed using any of these functions, any previous content is cleared.

By default, labels display left-aligned, vertically-centered text and images, where any tabs in the text to be displayed are automatically expanded. When the user presses the shortcut key indicated by this label, the keyboard focus is transferred to the label's buddy widget. This method is also a Qt slot with the C++ signature .

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However, the look of a QLabel can be adjusted and fine-tuned in several ways. Returns the label's picture or 0 if the label doesn't have a picture. selection Start() returns the index of the first selected character in the label or -1 if no text is selected. The buddy mechanism is only available for QLabels that contain text in which one character is prefixed with an ampersand, '&'. See the QKey Sequence.mnemonic() documentation for details (to display an actual ampersand, use '&&'). This method is also a Qt slot with the C++ signature . This method is also a Qt slot with the C++ signature . Sets the label contents to plain text containing the textual representation of double num. Does nothing if the double's string representation is the same as the current contents of the label. Selects text from position start and for length characters. This method is also a Qt slot with the C++ signature This is the default overload of this signal. This signal is emitted when the user hovers over a link. The positioning of the content within the QLabel widget area can be tuned with set Alignment() and set Indent(). Returns a pointer to the label's movie, or 0 if no movie has been set. Note: The text Interaction Flags set on the label need to include either Text Selectable By Mouse or Text Selectable By Keyboard. In a dialog, you might create two data entry widgets and a label for each, and set up the geometry layout so each label is just to the left of its data entry widget (its "buddy"), for example: With the code above, the focus jumps to the Name field when the user presses Alt+N, and to the Phone field when the user presses Alt+P. Sets the label contents to plain text containing the textual representation of integer num. Does nothing if the integer's string representation is the same as the current contents of the label. Note: The text Interaction Flags set on the label need to include either Text Selectable By Mouse or Text Selectable By Keyboard. This signal is emitted when the user clicks a link. The URL referred to by the anchor is passed in link.