QtSingleApplication源码

Qt Solutions Component: Single Application The QtSingleApplication component provides support for applications that can be only started once per user. Version history: 2.0: - Version 1.3 ported to Qt 4. 2.1: - Fix compilation problem on Mac. 2.2: - Really fix the Mac compilation problem. - Mac: fix crash due to wrong object releasing. - Mac: Fix memory leak. 2.3: - Windows: Force creation of internal widget to make it work with Qt 4.2. 2.4: - Fix the system for automatic window raising on message reception. NOTE: minor API change. 2.5: - Mac: Fix isRunning() to work and report correctly. 2.6: - - initialize() is now obsolete, no longer necessary to call it - - Fixed race condition where multiple instances migth be started - - QtSingleCoreApplication variant provided for non-GUI (console) usage - Complete reimplementation. Visible changes: - LGPL release.