[C con Clase] Tooltip en ComboboxEx Winapi

[Jose del Castillo]

Hola he intentado y aun no puedo agregar un tooltip a un comboboxex, en el proyecto que adjunto compilado en codeblocks, en la linea 102 usando WC_COMBOBOX el tooltip aparece, pero al cambiar a WC_COMBOBOXEX deja de funcionar. Alguien que me de una mano estare agradecido.
Saludos

#include <windows.h>

#ifdef _WIN32_IE
#undef _WIN32_IE
#endif
#define _WIN32_IE 0x0600
#include <commctrl.h>

#define ID_COMBO  1001

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "CodeBlocksWindowsApp";

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    INITCOMMONCONTROLSEX iccx;

    iccx.dwSize = sizeof(INITCOMMONCONTROLSEX);
    iccx.dwICC = ICC_BAR_CLASSES | ICC_COOL_CLASSES | ICC_DATE_CLASSES | ICC_HOTKEY_CLASS |
                 ICC_INTERNET_CLASSES | ICC_LISTVIEW_CLASSES | ICC_NATIVEFNTCTL_CLASS | ICC_PROGRESS_CLASS |
                 ICC_TAB_CLASSES | ICC_TREEVIEW_CLASSES | ICC_UPDOWN_CLASS | ICC_WIN95_CLASSES;
    // ICC_LINK_CLASS ICC_STANDARD_CLASSES
    int a=InitCommonControlsEx(&iccx);
    if(a==0)
        return 0;

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Code::Blocks Template Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND hcombo,hwndTip;
    TOOLINFO toolInfo={0};
    switch (message)                  /* handle the messages */
    {
        case WM_CREATE:

        hcombo=CreateWindowEx(
            0, WC_COMBOBOXEX , 0 , CBS_DROPDOWNLIST | WS_CHILD | WS_VISIBLE | WS_TABSTOP,
            20,5,
            90,150,
            hwnd,
            (HMENU)ID_COMBO,
            GetModuleHandle(0),
            NULL);
        SendMessage(hcombo,WM_SETFONT,(WPARAM)(HFONT)GetStockObject(DEFAULT_GUI_FONT),MAKELPARAM(TRUE,0));

        hwndTip = CreateWindowEx(WS_EX_TOPMOST, TOOLTIPS_CLASS, NULL, WS_POPUP | TTS_ALWAYSTIP,
                     CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
                     hwnd, (HMENU)0, GetModuleHandle(0), NULL);
        if(hwndTip)
                {
                SendMessage(hwndTip, TTM_SETMAXTIPWIDTH, 20, 150);
                SetWindowPos(hwndTip, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
                toolInfo.cbSize = sizeof(toolInfo);
                toolInfo.hwnd = hwnd;
                toolInfo.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
                toolInfo.hinst = GetModuleHandle(0);
                //Controles
                toolInfo.uId = (UINT_PTR)GetDlgItem(hwnd, ID_COMBO);
                toolInfo.lpszText = (LPTSTR)"Hola";
                SendMessage(hwndTip, TTM_ADDTOOL, 0, (LPARAM)&toolInfo);
                }
                else
                MessageBox(hwnd, "Error Tooltip", "Error", MB_ICONERROR | MB_OK);

        break;
        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}
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