I have developed an Internet Explorer Searchbar using ATL COM with the help of this tutorial

http://www.codeproject.com/KB/shell/...rtutorial.aspx

There is one small problem. The background of the icons is black instead of transparent. This is the code for attaching ICONS with the toolbar

Code:
LRESULT CMFToolbar::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
	// buttons with images and text
	SendMessage(m_hWnd, TB_SETEXTENDEDSTYLE, 0, (LPARAM)TBSTYLE_EX_MIXEDBUTTONS);
	// Sets the size of the TBBUTTON structure.
	SendMessage(m_hWnd, TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
	// Set the maximum number of text rows and bitmap size.
	SendMessage(m_hWnd, TB_SETMAXTEXTROWS, 1, 0L);

	SendMessage(m_hWnd, TB_SETROWS, MAKEWPARAM(1, 0), (LPARAM)NULL);

	SendMessage(m_hWnd, TB_SETEXTENDEDSTYLE, 0, (LPARAM)TBSTYLE_EX_DRAWDDARROWS);

	
	// add our button's caption to the toolbar window
	TCHAR* pCaption = _T("Members");
	int iIndex = ::SendMessage(m_hWnd, TB_ADDSTRING, 0,(LPARAM)pCaption);	

	TCHAR* pCaption1 = _T("Forums");
	int iIndex1 = ::SendMessage(m_hWnd, TB_ADDSTRING, 0,(LPARAM)pCaption1);


	// load our button's icon and create the image list to house it.
	HICON hMotley = (HICON)LoadImage(_Module.m_hInst, MAKEINTRESOURCE(IDI_ICON1_SEARCH),
			IMAGE_ICON, 16, 16, LR_SHARED | LR_DEFAULTCOLOR); 

		//LoadIcon(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDI_ICON1_SEARCH));

	m_hImageList = ImageList_Create(16,16, ILC_COLOR16 | ILC_MASK, 1, 0);
	int iImageIndex = ImageList_AddIcon(m_hImageList, hMotley);

	HICON hForums = LoadIcon(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDI_ICON_FORUMS));
	int iImageIndex1 = ImageList_AddIcon(m_hImageList, hForums);


	DestroyIcon(hMotley);
	DestroyIcon(hForums);

	// Set the toolbar's image
	::SendMessage(m_hWnd, TB_SETIMAGELIST, 0, (LPARAM)m_hImageList);

	// add the button for the toolbar to the window
	TBBUTTON Button;
	ZeroMemory((void*)&Button, sizeof(TBBUTTON));
	Button.idCommand = IDM_GETQUOTE;
	Button.fsState = TBSTATE_ENABLED;
	Button.fsStyle = TBSTYLE_BUTTON | TBSTYLE_AUTOSIZE | TBSTYLE_DROPDOWN;
	Button.dwData = 0;
	Button.iString = NULL;
	Button.iBitmap = iImageIndex;
	::SendMessage(m_hWnd, TB_INSERTBUTTON, 0, (LPARAM)&Button);	

	TBBUTTON Button1;
	ZeroMemory((void*)&Button1, sizeof(TBBUTTON));
	Button1.idCommand = IDM_FORUM;
	Button1.fsState = TBSTATE_ENABLED;
	Button1.fsStyle = BTNS_BUTTON | BTNS_AUTOSIZE | BTNS_SHOWTEXT | TBSTYLE_TRANSPARENT/*| BTNS_DROPDOWN*/;
	Button1.dwData = 0;
	Button1.iString = iIndex1;
	Button1.iBitmap = iImageIndex1;
	::SendMessage(m_hWnd, TB_INSERTBUTTON, 1, (LPARAM)&Button1);


	m_hMenu = CreatePopupMenu();
	AppendMenu (m_hMenu, MF_ENABLED | MF_STRING, 0, _T("Forums"));
	AppendMenu (m_hMenu, MF_ENABLED | MF_STRING, 1, _T("Sessions"));
	AppendMenu (m_hMenu, MF_ENABLED | MF_STRING, 2, _T("Application"));
	AppendMenu (m_hMenu, MF_ENABLED | MF_STRING, 3, _T("Cache"));
	//CheckMenuItem (m_hMenu, 0, MF_CHECKED | MF_BYCOMMAND);

	// create our EditQuote window and set the font.
	RECT rect = {0,0,0,0};
	m_EditWnd.Create(m_hWnd, rect, NULL, WS_CHILD|WS_VISIBLE, WS_EX_CLIENTEDGE);
	m_EditWnd.SetFont(static_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT)));
	return 0;
}

So how can I make those ICONS with transparent background??