problems

[IRON_MAN]

I´m doing 2 buttons one disabled the other one. To do that I have done the following that:

button.h

#ifndef BUTTONS_H
 #define BUTTONS_H
 
 #include <QWidget>
 #include <QBuffer>
 
 
 class QPushButton;
 
 class buttons: public QWidget
 {
     Q_OBJECT
 public:
	 buttons(QWidget *parent = 0);
 
private slots:
      void blocked();
 
 };
 
 #endif

#ifndef BUTTONS_H
 #define BUTTONS_H

 #include <QWidget>
 #include <QBuffer>


 class QPushButton;

 class buttons: public QWidget
 {
     Q_OBJECT
 public:
	 buttons(QWidget *parent = 0);

private slots:
      void blocked();

 };

 #endif

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buttons.cpp

QPushButton *deshabilitar = new QPushButton(tr("deshabilitar"), this);
connect(deshabilitar, SIGNAL(clicked()),this, SLOT(blocked()));
 
QPushButton *Button7= new QPushButton(tr("Button7"), this);
 
void buttons:: blocked( )
 {
	    Button7.setDisabled(true);
 }

QPushButton *deshabilitar = new QPushButton(tr("deshabilitar"), this);
connect(deshabilitar, SIGNAL(clicked()),this, SLOT(blocked()));

QPushButton *Button7= new QPushButton(tr("Button7"), this);

void buttons:: blocked( )
 {
	    Button7.setDisabled(true);
 }

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Why am I having problems?