windows-server-2003/printscan/ui/photowiz/status.h

/*****************************************************************************
 *
 *  (C) COPYRIGHT MICROSOFT CORPORATION, 2000
 *
 *  TITLE:       status.h
 *
 *  VERSION:     1.0
 *
 *  AUTHOR:      RickTu
 *
 *  DATE:        11/8/00
 *
 *  DESCRIPTION: status page class definition
 *
 *****************************************************************************/


#ifndef _PRINT_PHOTOS_WIZARD_STATUS_PAGE_DLG_PROC_
#define _PRINT_PHOTOS_WIZARD_STATUS_PAGE_DLG_PROC_


#define PP_STATUS_PRINT             (WM_USER+300)
#define SP_MSG_UPDATE_PROGRESS_TEXT (WM_USER+301)   // wParam = cur page, lParam = total pages
#define SP_MSG_JUMP_TO_PAGE         (WM_USER+302)   // lParam = offset (+1, -1) from current page


class CWizardInfoBlob;


class CStatusPage
{
public:
    CStatusPage( CWizardInfoBlob * pBlob );
    ~CStatusPage();

    INT_PTR DoHandleMessage( HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam );
    VOID ShutDownBackgroundThreads();

private:

    // window message handlers
    LRESULT         _OnInitDialog();
    LRESULT         _OnDestroy();
    LRESULT         _OnNotify(WPARAM wParam, LPARAM lParam);

    // thread message handlers
    VOID            _DoHandleThreadMessage( LPMSG pMSG );

    // cancel printing
    VOID            _CancelPrinting();



    // worker thread proc
    static DWORD s_StatusWorkerThreadProc( LPVOID lpv )
    {
        WIA_PUSH_FUNCTION_MASK((0x80, TEXT("CStatusPage::s_StatusWorkerThreadProc()")));
        MSG msg;
        LONG lRes = 0;
        CStatusPage * pSP = (CStatusPage *)lpv;

        HMODULE hDll = GetThreadHMODULE( s_StatusWorkerThreadProc );
        HRESULT hrCo = PPWCoInitialize();

        if (pSP)
        {
            PeekMessage( &msg, NULL, WM_USER, WM_USER, PM_NOREMOVE );
            do {
                lRes = GetMessage( &msg, NULL, 0, 0 );
                if (lRes > 0)
                {
                    pSP->_DoHandleThreadMessage( &msg );
                }
            } while ( (lRes != 0) && (lRes != -1) );
        }
        WIA_TRACE((TEXT("s_StatusWorkerThreadProc: exiting thread now...")));

        PPWCoUninitialize(hrCo);

        if (hDll)
        {
            FreeLibraryAndExitThread( hDll, 0 );
        }
        return 0;
    }

private:
    CWizardInfoBlob *               _pWizInfo;
    HWND                            _hDlg;
    HANDLE                          _hWorkerThread;
    DWORD                           _dwWorkerThreadId;
};




#endif