I am attempting to add a "Play/Pause" QPushButton for a tile morphing app. My issue is that this button should have two functions in itself (play/pause).

How would I go about adding the pause functionality? My current code has the play function working:

GLWidget.cpp
Qt Code: 
  1. void GLWidget::s_play()
  2. {
  3.     m_flagScale = 1;
  4.     m_flagCentroid = 1;
  5.     m_flagRotate = 1;
  6. }
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MainWindow.cpp
Qt Code: 
  1. connect(m_load,       SIGNAL(clicked()),              this,  SLOT(s_loadTiles()));
  2.     connect(m_scale,      SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setScale(int)));
  3.     connect(m_rotate,    SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setRotate(int)));
  4.     connect(m_centroid, SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setCentroid(int)));
  5.     connect(m_play,      SIGNAL(clicked()),               m_glwidget, SLOT(s_play()));
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Thank for the help in advance!