problem when Adding button in Horizontal layout

[hjohn]

my main Layout is vertical laout.
I am adding 4 things on it:
1.Widget
2.button1
3.scrollarea
4.button 2.
And first,I want to add widget and button 1 in to horizontal layout.and add that layout in vertical layout.so not senario is something like this:
1.horizontal layout(Which contain widget and button1)
2.scrollarea
3.button2
Now problem is that when I add widget or button1 in to horizontal layout,the program get crashed.

Code:

   m_pVerticalTabWidget = new QWidget(this);

   m_pBucHeaderWidget = new QWidget();
   m_pVLayout = new QVBoxLayout();
    m_pVerticalTabWidget->setLayout(m_pVLayout);

   HLayout_TopButton=new QHBoxLayout();
 ButtonLabelAtTop= new QPushButton();
    ButtonLabelAtTop->setMaximumWidth(40);
    HLayout_TopButton->addWidget(ButtonLabelAtTop);

 m_pScrollArea = new QScrollArea;
     m_pScrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

    ButtonLabelAtButtom= new QPushButton();

  m_pVLayout->addLayout(HLayout_TopButton);
   m_pVLayout->addWidget(m_pScrollArea);
   m_pVLayout->addWidget(ButtonLabelAtButtom);

[JonB]

@hjohn said in problem when Adding button in Horizontal layout:

Now problem is that when I add widget or button1 in to horizontal layout,the program get crashed.

So in the code as shown above, which line are you claiming actually "crashes"?