Hi. I've got a problem. When compile project files:
Maker.cpp
Qt Code: 
  1. #include <QtGui>
  2.  
  3.  #include "maker.h"
  4.  
  5.  MainWindow::MainWindow(QMainWindow *parent)
  6.      : QMainWindow(parent)
  7.  {
  8.      ui.setupUi(this);
  9.      connect(actionAbout, SIGNAL(triggered()), this, SLOT(abcziom()));
  10.      }
  11. void MainWindow::abcziom()
  12.  
  13.  {
  14.  QMessageBox::warning(this, tr("About Application"),
  15.             tr("The <b>Application</b> example demonstrates how to "
  16.                "write modern GUI applications using Qt, with a menu bar, "
  17.                "toolbars, and a status bar."));
  18.  
  19.  }
To copy to clipboard, switch view to plain text mode 
Maker.h
Qt Code: 
  1. #ifndef MAKER_H
  2. #define MAKER_H
  3.  
  4.  #include "ui_maker.h"
  5.  
  6.  
  7.  class MainWindow : public QMainWindow, public Ui::MainWindow
  8.  {
  9.      Q_OBJECT
  10.  
  11.  public:
  12.      MainWindow(QMainWindow *parent = 0);
  13.  
  14.  private slots:
  15.  
  16.     void abcziom();
  17.  
  18.  private:
  19.  
  20.      Ui::MainWindow ui;
  21.  };
  22.  
  23.  #endif
To copy to clipboard, switch view to plain text mode 
ui_Maker.h, resource.qrc, and main.cpp:
Qt Code: 
  1. #include <QApplication>
  2. #include <QPlastiqueStyle>
  3.  #include "maker.h"
  4.  
  5.  int main(int argc, char *argv[])
  6.  {
  7.      QApplication::setStyle ( new QPlastiqueStyle() );
  8.      QApplication app(argc, argv);
  9.      MainWindow MainWindow;
  10.      MainWindow.show();
  11.      return app.exec();
  12.  }
To copy to clipboard, switch view to plain text mode 
everything is ok, is builds the executable, but when I try to run it, there appear well known window - this is translation -
There appeared error with Test.exe application and it will be shut down. Sorry for problems. (the Polish version is: Wystąpił problem z aplikacją Test.exe i zostanie ona zamknięta. Przepraszamy za kłopoty.)
What is wrong? I tried to compile it twice, but without success. Regards