C / C++ / MFC

This is pissing me off big time. I have an edit box in a dialog and want to show a balloon tip as soon as the dialog is open:

BOOL Welcome_OnInitDialog(HWND hDlg, HWND hWndFocus, LPARAM lParam)
{
	// Display the music folder (as saved in the registry)
	SetDlgItemText(hDlg, IDC_MUSIC_FOLDER, g_musicFolder);
	
	WCHAR szTitle[] = L"Music Folder";
	WCHAR szText[] = L"Enter the path to your music folder here, or click browse..";
	EDITBALLOONTIP ebt;
	ebt.cbStruct = sizeof(ebt);
	ebt.pszTitle = szTitle;
	ebt.pszText = szText;
	ebt.ttiIcon = TTI_INFO;
	Edit_ShowBalloonTip(GetDlgItem(hDlg, IDC_MUSIC_FOLDER), &ebt);

	return TRUE;
}

It is not working. Yet, when the user clicks the OK button. My WM_COMMAND hander has no problem displaying balloon tip:

void Welcome_OnCommand(HWND hDlg, int nId, HWND hWndCtrl, UINT uCodeNotify)
{
	HWND hMusicFolder = GetDlgItem(hDlg, IDC_MUSIC_FOLDER);

	if (nId == IDOK)
	{
		g_musicFolder.GetFromHWnd(hMusicFolder);
		DWORD dwFileAttributes = GetFileAttributes(g_musicFolder);
		if (dwFileAttributes == 0xffffffff || dwFileAttributes &
			FILE_ATTRIBUTE_DIRECTORY != FILE_ATTRIBUTE_DIRECTORY)
		{
			// Select the text in the text box.
			SendMessage(hMusicFolder, EM_SETSEL, 0, -1);
			// Display a balloon tip.
			WCHAR szTitle[] = L"Invalid folder name";
			WCHAR szText[] = L"Please confirm that this is the path to your music folder.";
			EDITBALLOONTIP ebt;
			ebt.cbStruct = sizeof(ebt);
			ebt.pszTitle = szTitle;
			ebt.pszText = szText;
			ebt.ttiIcon = TTI_WARNING;
			Edit_ShowBalloonTip(hMusicFolder, &ebt);
			
			return;
		}
.
.
.
}

What's going on? Any fixes?

Thanks