Unable to add custom icon / bitmap to command bar - WinCE 5 API

[MasterWill]

I am able to add system icons to a command bar, but when I try to add my own, I just get a blank button. I have tried several configurations, a bitmap vs. an icon, and it still shows up as blank. Since I was testing with a system icon, that code is commented out.

Here is my button structure:

// File bar button structure
const TBBUTTON tbCBStdBtns[] =
{
// BitmapIndex Command State Style UserData String
// {STD_FILENEW, IDC_NEW, TBSTATE_ENABLED,
// TBSTYLE_BUTTON, 0, 0},
{IDB_SQUARED16, IDC_SQUAREDSHIPPING,
TBSTATE_ENABLED, TBSTYLE_BUTTON, 0, 0}
};

Here is the creation:

case WM_CREATE:
// Create the command bar
g_hWndCommandBar = CommandBar_Create(g_hInst, hWnd, IDC_CMDBAR);
CommandBar_AddBitmap (g_hWndCommandBar, g_hInst, IDB_SQUARED16, 1, 0, 0);
//CommandBar_AddBitmap (g_hWndCommandBar, HINST_COMMCTRL, IDB_STD_SMALL_COLOR, STD_BMPS, 0, 0);
CommandBar_AddButtons(g_hWndCommandBar, 1, &tbCBStdBtns);
//CommandBar_AddButtons(g_hWndCommandBar, 1, &tbCBStdBtns);
CommandBar_InsertMenubar(g_hWndCommandBar, g_hInst, IDR_MENU, 1);

Note that I want the icon to the left of the menu (originally I wanted the icon on the title bar, but apparently it is not supported in WinCE). I'm pretty new at this, so I apologize in advance if my code inclusion does not follow this website's standards. I will certainly provide the files if necessary.

Thanks in advance!

[MasterWill]

Update:

My bitmap appears when I add dummy buttons, but it's out of place. There are now 6 buttons (including the separator) and mine is last in the list despite changing the order in the button structure and ID numbers. Here is the current code:

const TBBUTTON tbCBStdBtns[] = 
{
//  BitmapIndex       Command			  State			   Style		 UserData String
	{IDB_BITMAP16C2, IDC_SQUAREDSHIPPING, TBSTATE_ENABLED, TBSTYLE_BUTTON,    0,   0},
	{0,               0,         0,          TBSTYLE_SEP,        0,  0},
    {STD_FILENEW,     IDC_NEW,   TBSTATE_ENABLED,
                                             TBSTYLE_BUTTON,     0,  0},
    {STD_FILEOPEN,    IDC_OPEN,  TBSTATE_ENABLED,
                                             TBSTYLE_BUTTON,     0,  0},
    {STD_PROPERTIES,  IDC_PROP,  TBSTATE_ENABLED,
                                             TBSTYLE_BUTTON,     0,  0},
    {STD_CUT,         IDC_CUT,   TBSTATE_ENABLED,
                                             TBSTYLE_BUTTON,     0,  0},

};

// ...

case WM_CREATE:
			// Create the command bar

			err = ::GetLastError (); count = ::FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &p_text, 0, NULL);
			//MessageBox(NULL, p_text, TEXT("Error"), MB_ICONERROR);

			g_hWndCommandBar = CommandBar_Create(g_hInst, hWnd, IDC_CMDBAR);
			err = ::GetLastError (); count = ::FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &p_text, 0, NULL);
			//if(!g_hWndCommandBar || 1) MessageBox(NULL, p_text, TEXT("Error"), MB_ICONERROR);

			i = CommandBar_AddBitmap (g_hWndCommandBar, g_hInst, IDB_BITMAP16C2, 1, 0, 0);
			//i = CommandBar_AddBitmap (g_hWndCommandBar, NULL, (int)LoadBitmap (g_hInst, TEXT ("IDB_BITMAP16C")), 1, 0, 0);
			err = ::GetLastError (); count = ::FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &p_text, 0, NULL);
			if(i == -1) MessageBox(NULL, p_text, TEXT("AddBitmap Error"), MB_ICONERROR);
			
			result = CommandBar_AddButtons(g_hWndCommandBar, dim(tbCBStdBtns), tbCBStdBtns);
			//result = CommandBar_AddButtons(g_hWndCommandBar, 1, tbCBStdBtns);
			//result = CommandBar_InsertButton (g_hWndCommandBar, 0, &tbCBStdBtns);
			err = ::GetLastError (); count = ::FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &p_text, 0, NULL);
			if(result != 1) MessageBox(NULL, p_text, TEXT("AddButtons Error"), MB_ICONERROR);
			
			CommandBar_InsertMenubar(g_hWndCommandBar, g_hInst, IDR_MENU, 1);
			err = ::GetLastError (); count = ::FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &p_text, 0, NULL);
			//MessageBox(NULL, p_text, TEXT("Error"), MB_ICONERROR);

Any advice? Could this be a bug? (sorry for my messy commented code)

[MasterWill]

SOLVED

So i guess the iBitmap parameter of the TBBUTTON structure is supposed to be the index of the array, not the ID number. The examples I was using (from the Boling book) put the IDs there, which may work for many buttons. Since I just want one button to act as a System menu (until I figure out how to add one in the title bar in Windows CE), I changed the value to 0 and deleted the temporary dummy buttons.

const TBBUTTON tbCBStdBtns[] =
{
// BitmapIndex Command State Style UserData String
{0, IDC_SQUAREDSHIPPING, TBSTATE_ENABLED, TBSTYLE_BUTTON, 0, 0},

};