C++ GetMessageTime函數代碼示例

// Left button
void CMouse::InternalOnLButtonDown(UINT nFlags, const CPoint& point)
{
    GetWnd().SetFocus();
    m_bLeftDown = false;
    SetCursor(nFlags, point);
    if (MVRDown(nFlags, point)) {
        return;
    }
    bool bIsOnFS = IsOnFullscreenWindow();
    if ((!m_bD3DFS || !bIsOnFS) && (abs(GetMessageTime() - m_popupMenuUninitTime) < 2)) {
        return;
    }
    if (m_pMainFrame->GetLoadState() == MLS::LOADED && m_pMainFrame->GetPlaybackMode() == PM_DVD &&
            (m_pMainFrame->IsD3DFullScreenMode() ^ m_bD3DFS) == 0 &&
            (m_pMainFrame->m_pDVDC->ActivateAtPosition(GetVideoPoint(point)) == S_OK)) {
        return;
    }
    if (m_bD3DFS && bIsOnFS && m_pMainFrame->m_OSD.OnLButtonDown(nFlags, point)) {
        return;
    }
    m_bLeftDown = true;
    bool bDouble = false;
    if (m_bLeftDoubleStarted &&
            GetMessageTime() - m_leftDoubleStartTime < (int)GetDoubleClickTime() &&
            CMouse::PointEqualsImprecise(m_leftDoubleStartPoint, point)) {
        m_bLeftDoubleStarted = false;
        bDouble = true;
    } else {
        m_bLeftDoubleStarted = true;
        m_leftDoubleStartTime = GetMessageTime();
        m_leftDoubleStartPoint = point;
    }
    auto onButton = [&]() {
        GetWnd().SetCapture();
        bool ret = false;
        if (bIsOnFS || !m_pMainFrame->IsCaptionHidden()) {
            ret = OnButton(wmcmd::LDOWN, point, bIsOnFS);
        }
        if (bDouble) {
            ret = OnButton(wmcmd::LDBLCLK, point, bIsOnFS) || ret;
        }
        if (!ret) {
            ReleaseCapture();
        }
        return ret;
    };
    m_drag = (!onButton() && !bIsOnFS) ? Drag::BEGIN_DRAG : Drag::NO_DRAG;
    if (m_drag == Drag::BEGIN_DRAG) {
        GetWnd().SetCapture();
        m_beginDragPoint = point;
        GetWnd().ClientToScreen(&m_beginDragPoint);
    }
}

static void process_button_released(MSLLHOOKSTRUCT *mshook, uint16_t button) {
	// Populate mouse released event.
	event.time = GetMessageTime();
	event.reserved = 0x00;

	event.type = EVENT_MOUSE_RELEASED;
	event.mask = get_modifiers();

	event.data.mouse.button = button;
	event.data.mouse.clicks = click_count;

	event.data.mouse.x = mshook->pt.x;
	event.data.mouse.y = mshook->pt.y;

	logger(LOG_LEVEL_INFO, "%s [%u]: Button %u released %u time(s). (%u, %u)\n",
			__FUNCTION__, __LINE__, event.data.mouse.button,
			event.data.mouse.clicks,
			event.data.mouse.x, event.data.mouse.y);

	// Fire mouse released event.
	dispatch_event(&event);

	// If the pressed event was not consumed...
	if (event.reserved ^ 0x01 && last_click.x == mshook->pt.x && last_click.y == mshook->pt.y) {
		// Populate mouse clicked event.
		event.time = GetMessageTime();
		event.reserved = 0x00;

		event.type = EVENT_MOUSE_CLICKED;
		event.mask = get_modifiers();

		event.data.mouse.button = button;
		event.data.mouse.clicks = click_count;
		event.data.mouse.x = mshook->pt.x;
		event.data.mouse.y = mshook->pt.y;

		logger(LOG_LEVEL_INFO, "%s [%u]: Button %u clicked %u time(s). (%u, %u)\n",
				__FUNCTION__, __LINE__, event.data.mouse.button, event.data.mouse.clicks,
				event.data.mouse.x, event.data.mouse.y);

		// Fire mouse clicked event.
		dispatch_event(&event);
	}

	// Reset the number of clicks.
	if (button == click_button && (long int) (event.time - click_time) > hook_get_multi_click_time()) {
		// Reset the click count.
		click_count = 0;
	}
}

void CMouse::EventCallback(MpcEvent ev)
{
    CPoint screenPoint;
    VERIFY(GetCursorPos(&screenPoint));
    switch (ev) {
        case MpcEvent::SWITCHED_TO_FULLSCREEN:
        case MpcEvent::SWITCHED_TO_FULLSCREEN_D3D:
            m_switchingToFullscreen.first = false;
            break;
        case MpcEvent::SWITCHING_TO_FULLSCREEN:
        case MpcEvent::SWITCHING_TO_FULLSCREEN_D3D:
            m_switchingToFullscreen = std::make_pair(true, screenPoint);
        // no break
        case MpcEvent::MEDIA_LOADED:
            if (CursorOnWindow(screenPoint, GetWnd())) {
                SetCursor(screenPoint);
            }
            break;
        case MpcEvent::CONTEXT_MENU_POPUP_UNINITIALIZED:
            m_popupMenuUninitTime = GetMessageTime();
            break;
        case MpcEvent::SYSTEM_MENU_POPUP_INITIALIZED:
            if (!GetCapture() && CursorOnWindow(screenPoint, GetWnd())) {
                ::SetCursor(m_cursors[Cursor::ARROW]);
            }
            break;
        default:
            ASSERT(FALSE);
    }
}

void
win_mouse_click(mouse_button b, LPARAM lp)
{
  static mouse_button last_button;
  static uint last_time, count;
  static pos last_click_pos;

  win_show_mouse();
  if (tab_bar_click(lp)) return;

  mod_keys mods = get_mods();
  pos p = get_mouse_pos(lp);

  uint t = GetMessageTime();
  if (b != last_button ||
      p.x != last_click_pos.x || p.y != last_click_pos.y ||
      t - last_time > GetDoubleClickTime() || ++count > 3)
    count = 1;
  term_mouse_click(win_active_terminal(), b, mods, p, count);
  last_pos = (pos){INT_MIN, INT_MIN};
  last_click_pos = p;
  last_time = t;
  last_button = b;
  if (alt_state > ALT_NONE)
    alt_state = ALT_CANCELLED;
}

void
win_mouse_click(mouse_button b, LPARAM lp)
{
  static mouse_button last_button;
  static uint last_time, count;
  static pos last_click_pos;

  win_show_mouse();
  mod_keys mods = get_mods();
  pos p = get_mouse_pos(lp);

  uint t = GetMessageTime();
  if (b != last_button ||
      p.x != last_click_pos.x || p.y != last_click_pos.y ||
      t - last_time > GetDoubleClickTime() || ++count > 3)
    count = 1;

  SetFocus(wnd);  // in case focus was in search bar
  term_mouse_click(b, mods, p, count);
  last_pos = (pos){INT_MIN, INT_MIN};
  last_click_pos = p;
  last_time = t;
  last_button = b;
  if (alt_state > ALT_NONE)
    alt_state = ALT_CANCELLED;
}

bool WinAltGrMonitor::isCurrentEventDefinitelyFake(unsigned iDownScanCode,
                                                   bool fKeyDown,
                                                   bool fExtendedKey) const
{
    MSG peekMsg;
    LONG messageTime = GetMessageTime();

    if (   iDownScanCode != 0x1d /* scan code: Control */ || fExtendedKey)
        return false;
    if (!PeekMessage(&peekMsg, NULL, WM_KEYFIRST, WM_KEYLAST, PM_NOREMOVE))
        return false;

	if (messageTime != peekMsg.time)
	    return false;
	if (   fKeyDown
        && (peekMsg.message != WM_KEYDOWN && peekMsg.message != WM_SYSKEYDOWN))
        return false;
    if (   !fKeyDown
        && (peekMsg.message != WM_KEYUP && peekMsg.message != WM_SYSKEYUP))
        return false;
    if (   ((RT_HIWORD(peekMsg.lParam) & 0xFF) != 0x38 /* scan code: Alt */)
        || !(RT_HIWORD(peekMsg.lParam) & KF_EXTENDED))
        return false;
    if (!doesCurrentLayoutHaveAltGr())
        return false;
    return true;
}

double		BytesRandomD()
{
	BYTE		Buffer[0x464];
	SHA_CTX		Context;
	int			idx;

	idx = 0;
	memcpy(Buffer, RandomSeed, SHA_DIGEST_LENGTH);
	idx += sizeof(RandomSeed);
	GlobalMemoryStatus((LPMEMORYSTATUS)&Buffer[idx]);
	idx += sizeof(MEMORYSTATUS);
	UuidCreate((UUID *)&Buffer[idx]);
	idx += sizeof(UUID);
	GetCursorPos((LPPOINT)&Buffer[idx]);
	idx += sizeof(POINT);
	*(DWORD *)(Buffer + idx) = GetTickCount();
	*(DWORD *)(Buffer + idx + 4) = GetMessageTime();
	*(DWORD *)(Buffer + idx + 8) = GetCurrentThreadId();
	*(DWORD *)(Buffer + idx + 12) = GetCurrentProcessId();
	idx += 16;
	QueryPerformanceCounter((LARGE_INTEGER *)&Buffer[idx]);
	SHA1_Init(&Context);
	SHA1_Update(&Context, Buffer, 0x464);
	SHA1_Update(&Context, "additional salt...", 0x13);
	SHA1_Final(RandomSeed, &Context);
	return BytesSHA1d(Buffer, 0x464);
}

WebKeyboardEvent WebInputEventFactory::keyboardEvent(HWND hwnd, UINT message,
                                                     WPARAM wparam, LPARAM lparam)
{
    WebKeyboardEvent result;

    // TODO(pkasting): http://b/1117926 Are we guaranteed that the message that
    // GetMessageTime() refers to is the same one that we're passed in? Perhaps
    // one of the construction parameters should be the time passed by the
    // caller, who would know for sure.
    result.timeStampSeconds = GetMessageTime() / 1000.0;

    result.windowsKeyCode = result.nativeKeyCode = static_cast<int>(wparam);

    switch (message) {
    case WM_SYSKEYDOWN:
        result.isSystemKey = true;
    case WM_KEYDOWN:
        result.type = WebInputEvent::RawKeyDown;
        break;
    case WM_SYSKEYUP:
        result.isSystemKey = true;
    case WM_KEYUP:
        result.type = WebInputEvent::KeyUp;
        break;
    case WM_IME_CHAR:
        result.type = WebInputEvent::Char;
        break;
    case WM_SYSCHAR:
        result.isSystemKey = true;
        result.type = WebInputEvent::Char;
    case WM_CHAR:
        result.type = WebInputEvent::Char;
        break;
    default:
        ASSERT_NOT_REACHED();
    }

    if (result.type == WebInputEvent::Char || result.type == WebInputEvent::RawKeyDown) {
        result.text[0] = result.windowsKeyCode;
        result.unmodifiedText[0] = result.windowsKeyCode;
    }
    if (result.type != WebInputEvent::Char)
        result.setKeyIdentifierFromWindowsKeyCode();

    if (GetKeyState(VK_SHIFT) & 0x8000)
        result.modifiers |= WebInputEvent::ShiftKey;
    if (GetKeyState(VK_CONTROL) & 0x8000)
        result.modifiers |= WebInputEvent::ControlKey;
    if (GetKeyState(VK_MENU) & 0x8000)
        result.modifiers |= WebInputEvent::AltKey;
    // NOTE: There doesn't seem to be a way to query the mouse button state in
    // this case.

    if (LOWORD(lparam) > 1)
        result.modifiers |= WebInputEvent::IsAutoRepeat;
    if (isKeyPad(wparam, lparam))
        result.modifiers |= WebInputEvent::IsKeyPad;

    return result;
}

/*
	MDIWndProc
*/
LRESULT CALLBACK MDIWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HANDLE      hInfo;
	PINFO       pInfo;
	MSG			msg;
	EventRecord	macEvent;
	LONG		thePoints = GetMessagePos();
	PAINTSTRUCT	ps;

	msg.hwnd = hwnd;
	msg.message = message;
	msg.wParam = wParam;
	msg.lParam = lParam;
	msg.time = GetMessageTime();
	msg.pt.x = LOWORD(thePoints);
	msg.pt.y = HIWORD(thePoints);
	WinEventToMacEvent(&msg, &macEvent);           

    switch (message) 
    {
		case WM_CREATE:
		case WM_MDICREATE:
			break;
		case WM_DESTROY:
			hInfo = (HANDLE)GetWindowLong(hwnd, GWL_USERDATA);
            if (hInfo) 
            {
                if ((pInfo = (PINFO)LocalLock(hInfo)) != NULL){
					if (pInfo->gi) 
						// close the graphic import component
						CloseComponent(pInfo->gi);

						// Destroy our port association
						DestroyPortAssociation((CGrafPort *)GetHWNDPort(pInfo->hwndChildWindow));
				}
                LocalUnlock(hInfo);
			}
			break;

		// Draw our graphic
		case WM_PAINT:
			BeginPaint(hwnd, &ps); 
			hInfo = (HANDLE)GetWindowLong(hwnd, GWL_USERDATA);
            if (hInfo) 
            {
                if ((pInfo = (PINFO)LocalLock(hInfo)) != NULL)
					GraphicsImportDraw(pInfo->gi);
			
                LocalUnlock(hInfo);
			}
			EndPaint(hwnd, &ps);
			break;

        default:
            return DefMDIChildProc(hwnd, message, wParam, lParam);

    }
    return DefMDIChildProc(hwnd, message, wParam, lParam);
}

void MsgBubbleItem::SetShowTime(bool show)
{
	if(show)
	{
		std::wstring tm = GetMessageTime(msg_.timetag_, false);
		msg_time_->SetText(tm);
	}
	msg_time_->SetVisible(show);
}

static pos
translate_pos(int x, int y)
{
  return (pos){
    .x = floorf((x - PADDING) / (float)font_width ),
    .y = floorf((y - PADDING) / (float)font_height), 
  };
}

static pos
get_mouse_pos(LPARAM lp)
{
  return translate_pos(GET_X_LPARAM(lp), GET_Y_LPARAM(lp));  
}

static mouse_button clicked_button;
static pos last_pos;

void
win_mouse_click(mouse_button b, LPARAM lp)
{
  static mouse_button last_button;
  static uint last_time, count;
  static pos last_click_pos;

  win_show_mouse();
  mod_keys mods = get_mods();
  pos p = get_mouse_pos(lp);
  
  if (clicked_button) {
    term_mouse_release(b, mods, p);
    clicked_button = 0;
  }
  
  uint t = GetMessageTime();
  if (b != last_button ||
      p.x != last_click_pos.x || p.y != last_click_pos.y ||
      t - last_time > GetDoubleClickTime() || ++count > 3)
    count = 1;
  term_mouse_click(b, mods, p, count);
  last_pos = last_click_pos = p;
  last_time = t;
  clicked_button = last_button = b;
  if (alt_state > ALT_NONE)
    alt_state = ALT_CANCELLED;
}

void
win_mouse_release(mouse_button b, LPARAM lp)
{
  win_show_mouse();
  if (b == clicked_button) {
    term_mouse_release(b, get_mods(), get_mouse_pos(lp));
    clicked_button = 0;
    ReleaseCapture();
  }
}  

void fastPoll( void )
	{
	RANDOM_STATE randomState;
	BYTE buffer[ RANDOM_BUFSIZE ];
	SYSHEAPINFO sysHeapInfo;
	MEMMANINFO memManInfo;
	TIMERINFO timerInfo;
	POINT point;

	initRandomData( randomState, buffer, RANDOM_BUFSIZE );

	/* Get various basic pieces of system information: Handle of the window
	   with mouse capture, handle of window with input focus, amount of
	   space in global heap, whether system queue has any events, cursor
	   position for last message, 55 ms time for last message, number of
	   active tasks, 55 ms time since Windows started, current mouse cursor
	   position, current caret position */
	addRandomValue( randomState, GetCapture() );
	addRandomValue( randomState, GetFocus() );
	addRandomValue( randomState, GetFreeSpace( 0 ) );
	addRandomValue( randomState, GetInputState() );
	addRandomValue( randomState, GetMessagePos() );
	addRandomValue( randomState, GetMessageTime() );
	addRandomValue( randomState, GetNumTasks() );
	addRandomValue( randomState, GetTickCount() );
	GetCursorPos( &point );
	addRandomData( randomState, &point, sizeof( POINT ) );
	GetCaretPos( &point );
	addRandomData( randomState, &point, sizeof( POINT ) );

	/* Get the largest free memory block, number of lockable pages, number of
	   unlocked pages, number of free and used pages, and number of swapped
	   pages */
	memManInfo.dwSize = sizeof( MEMMANINFO );
	MemManInfo( &memManInfo );
	addRandomData( randomState, &memManInfo, sizeof( MEMMANINFO ) );

	/* Get the execution times of the current task and VM to approximately
	   1ms resolution */
	timerInfo.dwSize = sizeof( TIMERINFO );
	TimerCount( &timerInfo );
	addRandomData( randomState, &timerInfo, sizeof( TIMERINFO ) );

	/* Get the percentage free and segment of the user and GDI heap */
	sysHeapInfo.dwSize = sizeof( SYSHEAPINFO );
	SystemHeapInfo( &sysHeapInfo );
	addRandomData( randomState, &sysHeapInfo, sizeof( SYSHEAPINFO ) );

	/* Flush any remaining data through */
	endRandomData( randomState, 25 );
	}

void hook_stop_proc() {
	// Get the local system time in UNIX epoch form.
	uint64_t timestamp = GetMessageTime();

	// Populate the hook stop event.
	event.time = timestamp;
	event.reserved = 0x00;

	event.type = EVENT_HOOK_DISABLED;
	event.mask = 0x00;

	// Fire the hook stop event.
	dispatch_event(&event);
}

LRESULT RelayEvent(HWND hwnd, UINT uMsg, int x, int y)
{
	MSG msg;
	DWORD pos = GetMessagePos();

	msg.hwnd	= hwnd;
	msg.message = uMsg;
	msg.time	= GetMessageTime();
	msg.wParam	= 0;
	msg.lParam	= MAKELPARAM(x, y);//GetMessagePos();
	msg.pt.x	= x;//(short)LOWORD(pos);//msg.lParam);
	msg.pt.y	= y;//(short)HIWORD(pos);//msg.lParam);

	return SendMessage(hwnd, TTM_RELAYEVENT, 0, (LPARAM)&msg);
}

static void process_button_pressed(MSLLHOOKSTRUCT *mshook, uint16_t button) {
	uint64_t timestamp = GetMessageTime();

	// Track the number of clicks, the button must match the previous button.
	if (button == click_button && (long int) (timestamp - click_time) <= hook_get_multi_click_time()) {
		if (click_count < USHRT_MAX) {
			click_count++;
		}
		else {
			logger(LOG_LEVEL_WARN, "%s [%u]: Click count overflow detected!\n",
					__FUNCTION__, __LINE__);
		}
	}
	else {
		// Reset the click count.
		click_count = 1;

		// Set the previous button.
		click_button = button;
	}

	// Save this events time to calculate the click_count.
	click_time = timestamp;

	// Store the last click point.
	last_click.x = mshook->pt.x;
	last_click.y = mshook->pt.y;

	// Populate mouse pressed event.
	event.time = timestamp;
	event.reserved = 0x00;

	event.type = EVENT_MOUSE_PRESSED;
	event.mask = get_modifiers();

	event.data.mouse.button = button;
	event.data.mouse.clicks = click_count;

	event.data.mouse.x = mshook->pt.x;
	event.data.mouse.y = mshook->pt.y;

	logger(LOG_LEVEL_INFO, "%s [%u]: Button %u  pressed %u time(s). (%u, %u)\n",
			__FUNCTION__, __LINE__, event.data.mouse.button, event.data.mouse.clicks,
			event.data.mouse.x, event.data.mouse.y);

	// Fire mouse pressed event.
	dispatch_event(&event);
}