How to show dialog(only .ui)

[ditsikts]

I find similar questions like mine, but i didnt find out how to do this :(
This is my first app, please help

mainwindow.ccp

#include "mainwindow.h"
#include "ui_mainwindow.h"


MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

connect(ui->actionQuit, SIGNAL(triggered()), qApp, SLOT(quit()));
connect(ui->actionInsert,SIGNAL(triggered())),qApp,SLOT(insert Employee());
}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::insertEmployee()
{
//here we call/create dialog.ui

}
mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

public slots:
void insertEmployee();

private:
Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

aaasa.pro


QT += core gui
QT += sql

TARGET = aaasa
TEMPLATE = app


SOURCES += main.cpp\
mainwindow.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui \
dialog.ui

[ditsikts]

ok, i solve my problem