#include <QApplication>
#include <QtGui>
#include "ui_interface.h"
#include <iostream>
using namespace std;

class FechaApp {
    public:

    void fechar(char  elemento){ // da erro aqui
     QObject::connect(elemento, SIGNAL(clicked()), QApplication, SLOT(quit()));
    }


}

int main(int argc, char *argv[]) {
QApplication app(argc, argv);
QMainWindow *widget = new QMainWindow();

Ui::MainWindow form;

form.setupUi(widget);
//form.setupUi();

Fechar x;
x.fechar(form.pushButton);
//QObject::connect(form.pushButton, SIGNAL(clicked()), &app, SLOT(quit()));

widget->show();

return app.exec();
}


C:\teste\financeiro\main.cpp||In member function `void FechaApp::fechar(std::string)':|
C:\teste\financeiro\main.cpp|10|error: expected primary-expression before ',' token|
C:\teste\financeiro\main.cpp|16|error: new types may not be defined in a return type|
C:\teste\financeiro\main.cpp|16|note: (perhaps a semicolon is missing after the definition of `FechaApp')|
C:\teste\financeiro\main.cpp|16|error: extraneous `int' ignored|
C:\teste\financeiro\main.cpp|16|error: `main' must return `int'|
C:\teste\financeiro\main.cpp|16|error: return type for `main' changed to `int'|
C:\teste\financeiro\main.cpp||In function `int main(...)':|
C:\teste\financeiro\main.cpp|25|error: `Fechar' was not declared in this scope|
C:\teste\financeiro\main.cpp|25|error: expected `;' before "x"|
C:\teste\financeiro\main.cpp|26|error: `x' was not declared in this scope|
C:\teste\financeiro\main.cpp|25|warning: unused variable 'Fechar'|
C:\teste\financeiro\main.cpp|26|warning: unused variable 'x'|
||=== Build finished: 8 errors, 2 warnings ===|