Fixing the layout size

[houmingc]

want to set fixed size 1920 by 254.
Not been successful fixing the layout size
Below is my code
Widget install on being maximize

@
QPalette pal=palette();
pal.setColor(QPalette::Background,Qt::white);
setPalette(pal);
setAutoFillBackground(false);
setGeometry(QRect(1,1,1920,254));
this->setFixedSize(1920,254);

m_pPalette = new QPalette();
m_pPixmap  = new QPixmap(":/file/leftp.png");
m_pPalette->setBrush(QPalette::Background,QBrush(*m_pPixmap));
setPalette(*m_pPalette);
QWidget *centralWidget = new QWidget(this);
QHBoxLayout *layout = new QHBoxLayout();
centralWidget->setLayout(layout);

@

[euchkatzl]

Try using :

@layout.setContentsMargins(0,0,0,0);@