Mouse Over event on button

[munna]

You photoRecovery button and createImage button should be created from a class that reimplements the QAbstractButton (or may be QPushButton). Let will be something like

class PictureButton : public QAbstractButton
{
    public:
        //constructors and all other functions that you need.
   protected:
      void enterEvent(QEvent *event);
      void leaveEvent(QEvent *event);
};

class PictureButton : public QAbstractButton
{
    public:
        //constructors and all other functions that you need.
   protected:
      void enterEvent(QEvent *event);
      void leaveEvent(QEvent *event);
};

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The implementation of enterEvent and leaveEvent is already given by vfernandez

Now, you will need to create the buttons in following way

PictureButton *photoRecoveryButton = new PictureButton(icon,parent);
PictureButton *createImageButton = new PictureButton(icon,parent);

PictureButton *photoRecoveryButton = new PictureButton(icon,parent);
PictureButton *createImageButton = new PictureButton(icon,parent);

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Hope this helps.