How to set font Bold, Italic, and Underlined in Qt?

I want to ma开发者_Python百科ke a program that's like a simple text editor using Qt 4.6.2.

When the user block any text in a TextEdit and click on a button, the text will be bold/italic/underlined depending on the button..

I'm a beginner in Qt Programming, so if Possible, can you insert the programming code in Qt to do that?

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See setFontWeight for bold, setFontItalic for italic and setFontUnderline for underline. These methods set the corresponding attribute of the selected text.