How to adjust the a QHeaderView's width

I used a QTableWidget in my program, there was also a vertical header, after starting the program's run, when i clicked the vertical header, i want to add a QtableWidgetItem to the vertical header using "serVerticalHeaderItem( logicalIndex, pItem)", but the width of the vertical header doesn't adjust to display the whole icon image, how can i make this working better?

code:

Code:

---

QTableWidgetItem* pItem = new QTableWidgetItem(QIcon(tr(":/Images/breakpoint.png")), tr(""));
 
setVerticalHeaderItem( argLogicalIndex, pItem );

---

ps: i tryed resizeSecton(), but it doesn't work!
resizeSection works correctly for the horizontalHeader(), but it resizes the height instead of the width in the verticalHeader()

You could try verticalHeaderItem()->setSizeHint(pixmapSize);

Thank you, it does work^_^