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Source code

1 Thread 1085670848(LWP 2523)
#0  0x4000c9c0 in _dl_debug_state_internal() from /lib/ld-linux.so.2
#1  0x4110dfb2 in dl_open_worker() from /lib/tls/libc.so.6
#2  0x4000c266 in _dl_catch_error_internal() from /lib/ld-linux.so.2
#3  0x4210da49 in _dl_open() from /lib/tls/libc.so.6
#4  0x40ac5f6b in dlopen_doit() from /lib/libdl.so.2
#5  0x4000c266 in _dl_catch_error_internal () from /lib/ld-linux.so.2
#6  0x40ac6316 in _dlerror_run() from /lib/libdl.so.2
#7  0x40ac5f14 in dlopen@@GLIB_2.1() from /lib/libdl.so.2
#8  0x407d13ea in _XlcAddGB18030 LocaleConverters() from /usr/XllR6/lib/libXll.so.6
#9  0x407d19cd in _XInitDynamicIM() from /usr/XllR6/lib/libXll.so.6
#10 0x407a0e52 in XOpenOM() from /usr/XllR6/lib/libXll.so.6
#11 0x4079ffa9 in XCreateFontSet() from /usr/XllR6/lib/libXll.so.6
#12 0x4028dfe7 in QValueListPrivate<void(*)()>::QValueListPrivate(QCalueListPrivate<void(*)()> const&) () from /usr/lib/qt-3.1/lib/libqt_mt.so.3
#13 0x4028ec70 in QInputContext::QInputContext(QWidget*)() from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#14 0x4020d44c in QWidget::createInputContext()() from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#15 0x402790d5 in QApplication::Xll ProcessEvent(_XEvent*)() from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#16 0x4028dbda in QEventLoop::processEvents(unsigned)() from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#17 0x402e8cf6 in QEventLoop::enterLoop() () from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#18 0x402e8b98 in QEventLoop::exec() () from/usr/lib/libqt-mt.so.3
#19 0x402d5151 in QApplication::exec() () from /usr/lib/qt-3.1/lib/libqt-mt.so.3
#20 0x0807fc5c in main(argc=1,argv=0xbffff674) at main.cpp:29
#21 0x42015574 in __libc_start_main() from /lib/tls/lib.so.6

Source code

////////////////////////main.cpp
#include <qapplication.h>
#include "MainW.h"
#include "MainA.h"

int main( int argc, char ** argv )
{
    MainApp a( argc, argv );
    a.connect( &a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()) );
    int res = a.exec();
    return res;
}

///////////////////////////MainA.cpp
#include "MainA.h"
#include "MainW.h"
#include <qapplication.h>

MainApp::MainApp( int & argc, char ** argv ) : QApplication( argc, argv )
{
 <do something>
  init();
  t = new QTimer(this);
  connect(t,SIGNAL(timeout()),this,SLOT(OnIdle()));
  t->start(0,false);
}
MainApp::~MainApp
{
  t->stop();
}

void MainApp::init()
{
  <do something>
  MainWnd * mw=new MainWnd();
  setMainWidget(mw);
  mw->show();       
  <do something>  
}

oid MainApp:::OnIdle()
{
  if(qApp->hasPendingEvents())
  {

  }
  else
  {
     <do something>
  }
}

Source code

void MainApp:::OnIdle()
{
  if(qApp->hasPendingEvents())
  {

  }
  else
  {
     <do something about multi-threading>
  }
}