Obtaining a Windows file icon using fromWinHBITMAP()

[DIMEDROLL]

I am getting a Windows file icon via Win Api methods. Then I convert it to QT QIcon and use in my application. Everything seems to be good, but I see a little difference between my icons and those in Windows Explorer(Look at the attached image, left part is my app, right part is Windows Explorer). I think it may be related to shadows or Alpha channel. May be smb can help me to fix this?
Here is my code for obtaining an icon:

// fileInfo.hIcon obtained via SHGetFileInfo with flags SHGFI_ICON | SHGFI_SMALLICON
ICONINFO iconInfo;
if ( GetIconInfo(fileInfo.hIcon, &iconInfo) )
{
	QPixmap &iconPixmap = QPixmap::fromWinHBITMAP(
		iconInfo.hbmColor, 
		QPixmap::NoAlpha);	
 
	QBitmap iconMaskBitmap( 
		QPixmap::fromWinHBITMAP(iconInfo.hbmMask, 
								QPixmap::NoAlpha) );
 
	iconPixmap.setMask(iconMaskBitmap);
 
	resultingIcon = QIcon(iconPixmap) ;
}

// fileInfo.hIcon obtained via SHGetFileInfo with flags SHGFI_ICON | SHGFI_SMALLICON
ICONINFO iconInfo;
if ( GetIconInfo(fileInfo.hIcon, &iconInfo) )
{
	QPixmap &iconPixmap = QPixmap::fromWinHBITMAP(
		iconInfo.hbmColor, 
		QPixmap::NoAlpha);	

	QBitmap iconMaskBitmap( 
		QPixmap::fromWinHBITMAP(iconInfo.hbmMask, 
								QPixmap::NoAlpha) );

	iconPixmap.setMask(iconMaskBitmap);
	
	resultingIcon = QIcon(iconPixmap) ;
}

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[jpn]

Have you tried with QFileIconProvider?

[DIMEDROLL]

Yes, it does not return a proper file icon.
I've looked in sources it returns a standard QStyle::SP_FileIcon for all files.
I'll use it for Windows drives, thanks to you, but the problem is not solved.