Add a Frame Widget to the main window

[kamlmish]

Hi All

I have a issue where I need to add a framewidget to the mainwindow.I am writing the following code
But when I execute, the frame doesnt get displayed
/************************************************** *****************************/
FrameDisplay* display = new FrameDisplay;
QGridLayout* layout = new QGridLayout;
layout->setGeometry(20,140,231,300);
layout->addWidget(display);
display->show();
setLayout(layout);
/************************************************** *******************************/

---

Added after 25 minutes:

I need to have a image like the one thats attached

[tbscope]

What is FrameDisplay?
Where is the attached image?

[kamlmish]

The FrameDisplay class is declared below

/************************************************** ************/
class FrameDisplay: public QFrame
{
public:
FrameDisplay(QWidget* parent = 0);
~FrameDisplay();
public:
void DragEnterEvent(QDragEnterEvent* event);
void dropEvent(QDropEvent *event);
void mousePressEvent(QMouseEvent *event);

};
/************************************************** *************/