Line Edit "hint" text

[MTK358]

How do I make a QLineEdit show some predetermined gray text only when it's unfocused and empty? Kind of like the Filter box above the list of widgets in Qt Designer, so you know what I mean.

[wysota]

In Qt 4.7 this is a property of the line edit, in older versions you have to subclass QLineEdit and implement it yourself. You can also use QwwButtonLineEdit (http://www.wysota.eu.org/wwwidgets/doc/html/qwwbuttonlineedit.html) and its placeholderText property.