Resizing headers view in the QTableWidget

Hi, I am having a strange bahavour and I'd like to ask you if somebody understand why.

I have a QTableWidget called m_tbl.

Code:

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ui.m_tbl->setColumnCount(3);
	ui.m_tbl->horizontalHeader()->setStretchLastSection(true);
	ui.m_tbl->horizontalHeader()->setResizeMode(1, QHeaderView::ResizeToContents);
	ui.m_tbl->horizontalHeader()->setResizeMode(0, QHeaderView::Fixed);
	ui.m_tbl->horizontalHeader()->setDefaultSectionSize(25);

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From the docs, setDefaultSectionSize says: "This property holds the default size of the header sections before resizing.
This property only affects sections that have Interactive or Fixed as their resize mode."

As far as a I understand, this means my first column should have width 25, the second resize to its contents and the third fill the hole table.

BUT what I get are two columns with 25 od width and the last one doing setStretchLastSection() normally.

thanks!

so I guess this code should work and I should look for my problem in somewhere else.