CDesktopThread Class Reference

Collaboration diagram for CDesktopThread:

Public Member Functions
	CDesktopThread ()
	~CDesktopThread ()
HRESULT	Initialize (ITrayWindow *pTray)
void	Destroy ()

Private Member Functions
DWORD	DesktopThreadProc ()

Static Private Member Functions
static DWORD WINAPI	s_DesktopThreadProc (LPVOID lpParameter)

Private Attributes
CComPtr< ITrayWindow >	m_Tray
HANDLE	m_hInitEvent
HANDLE	m_hThread
DWORD	m_ThreadId

Detailed Description

Definition at line 23 of file desktop.cpp.

Constructor & Destructor Documentation

CDesktopThread()

CDesktopThread::CDesktopThread

(

)

Definition at line 44 of file desktop.cpp.

                              :
    m_Tray(NULL),
    m_hInitEvent(NULL),
    m_hThread(NULL),
    m_ThreadId(0)
{
}

~CDesktopThread()

CDesktopThread::~CDesktopThread

(

)

Definition at line 52 of file desktop.cpp.

{
    Destroy();
}

Member Function Documentation

DesktopThreadProc()

DWORD CDesktopThread::DesktopThreadProc ( )

private

Definition at line 143 of file desktop.cpp.

{
    CComPtr<IShellDesktopTray> pSdt;
    HANDLE hDesktop;
    HRESULT hRet;
    DWORD dwResult = 1;
 
    OleInitialize(NULL);
 
    hRet = m_Tray->QueryInterface(IID_PPV_ARG(IShellDesktopTray, &pSdt));
    if (!SUCCEEDED(hRet))
    {
        goto Cleanup;
    }
 
    hDesktop = _SHCreateDesktop(pSdt);
    if (!hDesktop)
    {
        goto Cleanup;
    }
 
    if (!SetEvent(m_hInitEvent))
    {
        /* Failed to notify that we initialized successfully, kill ourselves
         * to make the main thread wake up! */
        goto Cleanup;
    }
 
    _SHDesktopMessageLoop(hDesktop);
    dwResult = 0;
 
Cleanup:
    OleUninitialize();
    return dwResult;
}

Referenced by s_DesktopThreadProc().

Destroy()

void CDesktopThread::Destroy

(

)

Definition at line 117 of file desktop.cpp.

{
    if (m_hThread)
    {
        DWORD WaitResult = WaitForSingleObject(m_hThread, 0);
        if (WaitResult == WAIT_TIMEOUT)
        {
            /* Send WM_QUIT message to the thread and wait for it to terminate */
            PostThreadMessageW(m_ThreadId, WM_QUIT, 0, 0);
            WaitForSingleObject(m_hThread, INFINITE);
        }
 
        CloseHandle(m_hThread);
        m_hThread = NULL;
        m_ThreadId = 0;
    }
 
    if (m_hInitEvent)
    {
        CloseHandle(m_hInitEvent);
        m_hInitEvent = NULL;
    }
 
    m_Tray = NULL;
}

Referenced by ~CDesktopThread().

Initialize()

HRESULT CDesktopThread::Initialize

(

ITrayWindow *

pTray

)

Definition at line 57 of file desktop.cpp.

{
    HANDLE Handles[2];
 
    if (!pTray || m_Tray)
    {
        return E_FAIL;
    }
 
    m_hInitEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
    if (!m_hInitEvent)
    {
        return E_FAIL;
    }
 
    m_Tray = pTray;
    m_hThread = CreateThread(NULL, 0, s_DesktopThreadProc, (LPVOID)this, 0, &m_ThreadId);
 
    if (!m_hThread)
    {
        CloseHandle(m_hInitEvent);
        m_hInitEvent = NULL;
 
        m_Tray = NULL;
 
        return E_FAIL;
    }
 
    Handles[0] = m_hThread;
    Handles[1] = m_hInitEvent;
 
    for (;;)
    {
        DWORD WaitResult = MsgWaitForMultipleObjects(_countof(Handles), Handles, FALSE, INFINITE, QS_ALLEVENTS);
 
        if (WaitResult == WAIT_OBJECT_0 + _countof(Handles))
        {
            TrayProcessMessages(m_Tray);
        }
        else if (WaitResult != WAIT_FAILED && WaitResult != WAIT_OBJECT_0)
        {
            break;
        }
        else
        {
            CloseHandle(m_hThread);
            m_hThread = NULL;
            m_ThreadId = 0;
 
            CloseHandle(m_hInitEvent);
            m_hInitEvent = NULL;
 
            m_Tray = NULL;
 
            return E_FAIL;
        }
    }
    return S_OK;
}

Referenced by DesktopCreateWindow().

s_DesktopThreadProc()

DWORD WINAPI CDesktopThread::s_DesktopThreadProc ( LPVOID  lpParameter )

staticprivate

Definition at line 179 of file desktop.cpp.

{
    CDesktopThread* pDesktopThread = static_cast<CDesktopThread*>(lpParameter);
    return pDesktopThread->DesktopThreadProc();
}

Referenced by Initialize().

Member Data Documentation

m_hInitEvent

HANDLE CDesktopThread::m_hInitEvent

private

Definition at line 27 of file desktop.cpp.

Referenced by DesktopThreadProc(), Destroy(), and Initialize().

m_hThread

HANDLE CDesktopThread::m_hThread

private

Definition at line 28 of file desktop.cpp.

Referenced by Destroy(), and Initialize().

m_ThreadId

DWORD CDesktopThread::m_ThreadId

private

Definition at line 29 of file desktop.cpp.

Referenced by Destroy(), and Initialize().

m_Tray

CComPtr<ITrayWindow> CDesktopThread::m_Tray

private

Definition at line 26 of file desktop.cpp.

Referenced by DesktopThreadProc(), Destroy(), and Initialize().

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The documentation for this class was generated from the following file:

• base/shell/explorer/desktop.cpp