Transparent ICON Background

[maverick786us]

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

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??

[Night_Wulfe]

I believe you have to save your Icon with the transparent color as the background and Windows will take care of the rest when displaying the icon. There should be an option for doing this in whatever image program you used to create your icon.

It will either be something along the lines of "Set Transparent Color" to let you choose a color to use to represent transparency, or it'll be one of the selectable colors already available to you, depending on the program.

[maverick786us]

Yes, those icons have transparent background. When i use the same icons for simple IE buttons using registry, its background becomes transparent. But in case of this toolbar the background is automatically becoming black

[olivthill2]

m_hImageList = ImageList_Create(16,16, ILC_COLOR16 | ILC_MASK, 1, 0);

Maybe you could try without the ILC_MASK or the ILC_COLOR16 flag or with some other values.

[maverick786us]

OK. Here I discovered a wiered problem. I transferred my code into different PC. It had a different platorm SDK

C:\Program Files\Microsoft Platform SDK for Windows XP SP2\Include

In that toolbar was displaying transparent background for those ICONS instead of black. Can somone give me some hint?

[hoxsiew]

Did you try olivthill2's suggestion? Try: ILC_COLOR32|ILC_MASK

[maverick786us]

Yes. it somehow worked. Thanks