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copied!<p>A way that I have done such a thing in the past, is to make a signal in the button class that signals all the other buttons to go unselected.</p> <p>So the widget that has a pointer to all the objects makes the connection between the signal of one to one of its signals, and its signal to deselect the object.</p> <p>Here are some skeleton classes of what you would need.</p> <pre><code>class Button { signals: void selected(Button *); slot: void deselect(Button *); } class ButtonContainer { public: void addButton(Button *) signals: void buttonSelected(Button *); } </code></pre> <p>When adding a button connect it to the container this way:</p> <pre><code>QObject::connect(button, SIGNAL(selected(Button *)), buttonContainer, SIGNAL(buttonSelected(Button *))); QObject::connect(buttonContainer, SIGNAL(buttonSelected(Button *)), button, SLOT(deselect(Button *))); </code></pre> <p>When the mouse press event happens, emit this signal after applying your "selected" stylesheet:</p> <pre><code>emit selected(this); </code></pre> <p>In the deselect slot put this:</p> <pre><code>void Button::deselect(Button * selectedButton) { if(this != selectedButton) { // apply stylesheet for deselecting if it was previously selected } } </code></pre> <p>Hope that helps.</p> <p>By the way, be sure to make sure that you aren't setting the stylesheet too often. I haven't done extensive testing, but in at least some versions of Qt, it could go past the limit of QList. They have dynamic properties available to do frequent style changes:</p> <p><a href="https://stackoverflow.com/questions/13564823/qlist-out-of-memory/13568733#13568733">QList: Out of memory</a></p>

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