Hi, I have encountered a weird problem:

Qt Code: 
  1. hctrl = new QTextBrowser();////////////////////////////
  2.     hctrl->setReadOnly(TRUE);
  3.  
  4. 	hctrl->setFixedHeight(150);
  5.  
  6. 	QSplitter* LeftPanel=new QSplitter(Qt::Vertical);
  7. 	LeftPanel->setFixedWidth(18);
  8. 	LeftPanel->setFixedHeight(150);
  9.  
  10. 	QPushButton* quickButton=new QPushButton("@",LeftPanel);
  11. 	QPushButton* focusButton=new QPushButton("F",LeftPanel);
  12.         QPushButton* infoButton=new QPushButton("I",LeftPanel);
  13. 	QPushButton* zoomButton=new QPushButton("Z",LeftPanel);
  14. 	QPushButton* firstButton=new QPushButton("H",LeftPanel);
  15. 	QPushButton* lastButton=new QPushButton("E",LeftPanel);
  16. 	QPushButton* closeButton=new QPushButton("C",LeftPanel);
  17.  
  18.  
  19. 	clustercanvas= new QGLWidget;
  20.         clustercanvas->setFixedWidth(325);
  21. 	clustercanvas->setFixedHeight(150);
  22. 	panel = new QSplitter(Qt::Horizontal);
  23. 	panel->addWidget(LeftPanel);
  24. 	panel->addWidget(hctrl);
  25. 	panel->addWidget(clustercanvas);
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However, the display is like this:


The width of the left part (marked by red pen) is actually 360 instead of 18.

Why? How can I keep the width of the left part to be 18?

Thanks a lot!