Hi,
inspired by k3b osd I have added to my application an osd widget; now it works good in linux but in windows the widget decoration (borders) is visible. Here is the code I have used:
Qt Code: 
  1. GmckJobProgressOSD::GmckJobProgressOSD( QWidget* parent )
  2. 	: QWidget( parent, Qt::Window | Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint ),
  3. 		m_dirty(true),
  4. 		m_progress(0),
  5. 		m_dragging(false),
  6. 		m_screen(0),
  7. 		m_position(s_outerMargin, s_outerMargin)
  8. {
  9. 	QPixmap pix(10,10);
  10. 	m_osdBuffer = pix;
  11. 	setFocusPolicy( Qt::NoFocus );
  12.  
  13. 	// dummy size
  14. 	resize( 100, 20 );
  15. }
  16.  
  17.  
  18. void GmckJobProgressOSD::renderOSD()
  19. {
  20. 	// -----------------------------------------
  21. 	// |             download                  |
  22. 	// |    GMCK    ========== 40%             |
  23. 	// |                                       |
  24. 	// -----------------------------------------
  25.  
  26. 	// calculate needed size 
  27. 	if( true ) {
  28. 		QPixmap icon(":/icons/icon16x16.png");
  29. 		int margin = 10;
  30. 		int textWidth = fontMetrics().width( m_text );
  31.  
  32. 		// do not change the size every time the text changes, just in case we are too small
  33. 		QSize newSize( qMax( qMax( 2*margin + icon.width() + margin + textWidth, 100 ), width() ),
  34. 			 qMax( 2*margin + icon.height(), 2*margin + fontMetrics().height()*2 ) );
  35.  
  36. 		m_osdBuffer = m_osdBuffer.scaled( newSize );
  37. 		QPainter p( &m_osdBuffer );
  38.  
  39. 		p.setPen( Qt::white );
  40.  
  41. 		// draw the background and the frame
  42. 		QRect thisRect( -1, -1, newSize.width()+1, newSize.height()+1 );
  43. 		p.fillRect( thisRect, QColor(233,116,37));
  44. 		p.drawRect( thisRect );
  45.  
  46. 		// draw the gmck icon
  47. 		p.drawPixmap( margin, (newSize.height()-icon.height())/2, icon );
  48.  
  49. 		// draw the text
  50. 		QSize textSize = fontMetrics().size( 0, m_text );
  51. 		int textX = 2*margin + icon.width();
  52. 		int textY = margin + fontMetrics().ascent();
  53. 		p.drawText( textX, textY, m_text );
  54.  
  55. 		// draw the progress
  56. 		textY += fontMetrics().descent() + 4;
  57. 		QRect progressRect( textX, textY, newSize.width()-textX-margin, newSize.height()-textY-margin );
  58. 		p.drawRect( progressRect );
  59. 		progressRect.setWidth( m_progress > 0 ? m_progress*progressRect.width()/100 : 0 );
  60. 		p.fillRect( progressRect, Qt::white );
  61.  
  62. 		// reposition the osd
  63. 		reposition( newSize );
  64. 		resize(newSize);
  65.  
  66. 		m_dirty = false;
  67.  
  68. 		update();
  69. 	}
  70. }
  71.  
  72.  
  73. void GmckJobProgressOSD::paintEvent( QPaintEvent* )
  74. {
  75. 	QPainter *p = new QPainter(this);
  76. 	p->drawPixmap(0,0,m_osdBuffer);
  77. }
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Can I obtain the same aspect in windows too? How?

Thanks