自学教程：C++ IsMouseEnabled函数代码示例

LRESULT CActiveXUI::MessageHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, bool& bHandled){    if( m_pControl == NULL ) return 0;    ASSERT(m_pControl->m_bWindowless);    if( !m_pControl->m_bInPlaceActive ) return 0;    if( m_pControl->m_pInPlaceObject == NULL ) return 0;    if( !IsMouseEnabled() && uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST ) return 0;    bool bWasHandled = true;    if( (uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST) || uMsg == WM_SETCURSOR ) {        // Mouse message only go when captured or inside rect        DWORD dwHitResult = m_pControl->m_bCaptured ? HITRESULT_HIT : HITRESULT_OUTSIDE;        if( dwHitResult == HITRESULT_OUTSIDE && m_pControl->m_pViewObject != NULL ) {            IViewObjectEx* pViewEx = NULL;            m_pControl->m_pViewObject->QueryInterface(IID_IViewObjectEx, (LPVOID*) &pViewEx);            if( pViewEx != NULL ) {                POINT ptMouse = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };                pViewEx->QueryHitPoint(DVASPECT_CONTENT, &m_rcItem, ptMouse, 0, &dwHitResult);                pViewEx->Release();            }        }        if( dwHitResult != HITRESULT_HIT ) return 0;        if( uMsg == WM_SETCURSOR ) bWasHandled = false;        else if( uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONDBLCLK || uMsg == WM_RBUTTONDOWN ) {            ::SetFocus(GetManager()->GetPaintWindow());            SetFocus();        }    }    else if( uMsg >= WM_KEYFIRST && uMsg <= WM_KEYLAST ) {        // Keyboard messages just go when we have focus        if( !IsFocused() ) return 0;    }    else {        switch( uMsg ) {        case WM_HELP:        case WM_CONTEXTMENU:            bWasHandled = false;            break;        default:            return 0;        }    }    LRESULT lResult = 0;    HRESULT Hr = m_pControl->m_pInPlaceObject->OnWindowMessage(uMsg, wParam, lParam, &lResult);    if( Hr == S_OK ) bHandled = bWasHandled;    return lResult;}

	//************************************	// 函数名称: DoEvent	// 返回类型: void	// 参数信息: TEventUI & event	// 函数说明:	//************************************	void CTreeNodeUI::DoEvent( TEventUI& event )	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pOwner != NULL ) m_pOwner->DoEvent(event);			else CContainerUI::DoEvent(event);			return;		}		CListContainerElementUI::DoEvent(event);		if( event.Type == UIEVENT_DBLCLICK )		{			if( IsEnabled() ) {				m_pManager->SendNotify(this, _T("itemdbclick"));				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSEENTER )		{			if( IsEnabled()) {				if(m_bSelected && GetSelItemHotTextColor())					pItemButton->SetTextColor(GetSelItemHotTextColor());				else					pItemButton->SetTextColor(GetItemHotTextColor());			}			else 				pItemButton->SetTextColor(pItemButton->GetDisabledTextColor());			return;		}		if( event.Type == UIEVENT_MOUSELEAVE )		{			if( IsEnabled()) {				if(m_bSelected && GetSelItemTextColor())					pItemButton->SetTextColor(GetSelItemTextColor());				else if(!m_bSelected)					pItemButton->SetTextColor(GetItemTextColor());			}			else 				pItemButton->SetTextColor(pItemButton->GetDisabledTextColor());			return;		}	}

	void CCheckBoxUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else COptionUI::DoEvent(event);			return;		}		if( m_bAutoCheck && (event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK)) {			if( ::PtInRect(&m_rcItem, event.ptMouse) && IsEnabled() ) {				SetCheck(!GetCheck()); 				m_pManager->SendNotify(this, DUI_MSGTYPE_CHECKCLICK, 0, 0);				Invalidate();			}			return;		}		COptionUI::DoEvent(event);	}

void CHotButtonUI::DoEvent(TEventUI& event){	if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {		if( m_pParent != NULL ) m_pParent->DoEvent(event);		else CButtonUI::DoEvent(event);		return;	}	if( event.Type == UIEVENT_MOUSEENTER )	{		if( IsEnabled() ) {			m_uButtonState |= UISTATE_HOT;			m_pManager->SendNotify(this, DUI_MSGTYPE_BUTTON_HOT, event.wParam, event.lParam);			Invalidate();		}		return;	}	CButtonUI::DoEvent(event);}

void CMusicListGroupUI::DoEvent(TEventUI& event){	if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN &&		event.Type < UIEVENT__MOUSEEND ) {			if( m_pOwner != NULL ) m_pOwner->DoEvent(event);			else CContainerUI::DoEvent(event);			return;	}		if( event.Type == UIEVENT_BUTTONDOWN)	{		return;	}		else if( event.Type == UIEVENT_CONTEXTMENU )	{		if( IsContextMenuUsed() ) {			m_pManager->SendNotify(this, DUI_MSGTYPE_MENU, event.wParam, event.lParam);		}	}	else	{		CTreeNodeUI::DoEvent(event);	}}

	void CButtonUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CLabelUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETFOCUS ) 		{			Invalidate();		}		if( event.Type == UIEVENT_KILLFOCUS ) 		{			Invalidate();		}		if( event.Type == UIEVENT_KEYDOWN )		{			if (IsKeyboardEnabled()) {				if( event.chKey == VK_SPACE || event.chKey == VK_RETURN ) {					Activate();					return;				}			}		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )		{			if( ::PtInRect(&m_rcItem, event.ptMouse) && IsEnabled() ) {				m_uButtonState |= UISTATE_PUSHED | UISTATE_CAPTURED;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSEMOVE )		{			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				if( ::PtInRect(&m_rcItem, event.ptMouse) ) m_uButtonState |= UISTATE_PUSHED;				else m_uButtonState &= ~UISTATE_PUSHED;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_BUTTONUP )		{			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				if( ::PtInRect(&m_rcItem, event.ptMouse) ) Activate();				m_uButtonState &= ~(UISTATE_PUSHED | UISTATE_CAPTURED);				Invalidate();			}			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			if( IsContextMenuUsed() ) {				m_pManager->SendNotify(this, _T("menu"), event.wParam, event.lParam);			}			return;		}		if( event.Type == UIEVENT_MOUSEENTER )		{			if( IsEnabled() ) {				m_uButtonState |= UISTATE_HOT;				Invalidate();			}			// return;		}		if( event.Type == UIEVENT_MOUSELEAVE )		{			if( IsEnabled() ) {				m_uButtonState &= ~UISTATE_HOT;				Invalidate();			}			// return;		}		if( event.Type == UIEVENT_SETCURSOR ) {			::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW)));			return;		}		CLabelUI::DoEvent(event);	}

	void CTextUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CLabelUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETCURSOR ) {			for( int i = 0; i < m_nLinks; i++ ) {				if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {					::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));					return;				}			}		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK && IsEnabled() ) {			for( int i = 0; i < m_nLinks; i++ ) {				if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {					Invalidate();					return;				}			}		}		if( event.Type == UIEVENT_BUTTONUP && IsEnabled() ) {			for( int i = 0; i < m_nLinks; i++ ) {				if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {					m_pManager->SendNotify(this, DUI_MSGTYPE_LINK, i);					return;				}			}		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		// When you move over a link		if( m_nLinks > 0 && event.Type == UIEVENT_MOUSEMOVE && IsEnabled() ) {			int nHoverLink = -1;			for( int i = 0; i < m_nLinks; i++ ) {				if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {					nHoverLink = i;					break;				}			}			if(m_nHoverLink != nHoverLink) {				m_nHoverLink = nHoverLink;				Invalidate();				return;			}      		}		if( event.Type == UIEVENT_MOUSELEAVE ) {			if( m_nLinks > 0 && IsEnabled() ) {				if(m_nHoverLink != -1) {					m_nHoverLink = -1;					Invalidate();					return;				}			}		}		CLabelUI::DoEvent(event);	}

	void CRotateButtonUI::DoEvent(TEventUI& event)	{		if (!IsMouseEnabled() && 			event.Type > UIEVENT__MOUSEBEGIN && 			event.Type < UIEVENT__MOUSEEND) 		{			if (m_pParent) 			{				m_pParent->DoEvent(event);			}			return;		}		if (event.Type == UIEVENT_MOUSEMOVE)		{			if ((m_uButtonState & UISTATE_CAPTURED) != 0) 			{				AdjustDragButton(event.ptMouse);				Invalidate();			}			return;		}		if (event.Type == UIEVENT_BUTTONDOWN)		{			if (IsEnabled())			{				if (::PtInRect(&m_rcItem, event.ptMouse)) 					m_uButtonState |= UISTATE_CAPTURED;			}			return;		}		if (event.Type == UIEVENT_BUTTONUP)		{			if ((m_uButtonState & UISTATE_CAPTURED) != 0 )			{				if (::PtInRect(&m_rcItem, event.ptMouse))					Activate();				m_uButtonState &= ~UISTATE_CAPTURED;				Invalidate();			}			return;		}		if (event.Type == UIEVENT_CONTEXTMENU)		{			return;		}		if (event.Type == UIEVENT_KEYDOWN)		{			if (IsKeyboardEnabled()) 			{				if (event.chKey == VK_SPACE || event.chKey == VK_RETURN)  				{					Activate();					return;				}			}		}		if (event.Type == UIEVENT_SETFOCUS) 		{			Invalidate();		}		if ( event.Type == UIEVENT_KILLFOCUS) 		{			Invalidate();		}		CControlUI::DoEvent(event);	}

	void CScrollBarUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pOwner != NULL ) m_pOwner->DoEvent(event);			else CControlUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETFOCUS ) 		{			return;		}		if( event.Type == UIEVENT_KILLFOCUS ) 		{			return;		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )		{			if( !IsEnabled() ) return;			m_nLastScrollOffset = 0;			m_nScrollRepeatDelay = 0;			m_pManager->SetTimer(this, DEFAULT_TIMERID, 50U);			if( ::PtInRect(&m_rcButton1, event.ptMouse) ) {				m_uButton1State |= UISTATE_PUSHED;				if( !m_bHorizontal ) {					if( m_pOwner != NULL ) m_pOwner->LineUp(); 					else SetScrollPos(m_nScrollPos - m_nLineSize);				}				else {					if( m_pOwner != NULL ) m_pOwner->LineLeft(); 					else SetScrollPos(m_nScrollPos - m_nLineSize);				}			}			else if( ::PtInRect(&m_rcButton2, event.ptMouse) ) {				m_uButton2State |= UISTATE_PUSHED;				if( !m_bHorizontal ) {					if( m_pOwner != NULL ) m_pOwner->LineDown(); 					else SetScrollPos(m_nScrollPos + m_nLineSize);				}				else {					if( m_pOwner != NULL ) m_pOwner->LineRight(); 					else SetScrollPos(m_nScrollPos + m_nLineSize);				}			}			else if( ::PtInRect(&m_rcThumb, event.ptMouse) ) {				m_uThumbState |= UISTATE_CAPTURED | UISTATE_PUSHED;				ptLastMouse = event.ptMouse;				m_nLastScrollPos = m_nScrollPos;			}			else {				if( !m_bHorizontal ) {					if( event.ptMouse.y < m_rcThumb.top ) {						if( m_pOwner != NULL ) m_pOwner->PageUp(); 						else SetScrollPos(m_nScrollPos + m_rcItem.top - m_rcItem.bottom);					}					else if ( event.ptMouse.y > m_rcThumb.bottom ){						if( m_pOwner != NULL ) m_pOwner->PageDown(); 						else SetScrollPos(m_nScrollPos - m_rcItem.top + m_rcItem.bottom);                    					}				}				else {					if( event.ptMouse.x < m_rcThumb.left ) {						if( m_pOwner != NULL ) m_pOwner->PageLeft(); 						else SetScrollPos(m_nScrollPos + m_rcItem.left - m_rcItem.right);					}					else if ( event.ptMouse.x > m_rcThumb.right ){						if( m_pOwner != NULL ) m_pOwner->PageRight(); 						else SetScrollPos(m_nScrollPos - m_rcItem.left + m_rcItem.right);                    					}				}			}			if( m_pManager != NULL && m_pOwner == NULL ) m_pManager->SendNotify(this, DUI_MSGTYPE_SCROLL);			return;		}		if( event.Type == UIEVENT_BUTTONUP )		{			m_nScrollRepeatDelay = 0;			m_nLastScrollOffset = 0;			m_pManager->KillTimer(this, DEFAULT_TIMERID);			if( (m_uThumbState & UISTATE_CAPTURED) != 0 ) {				m_uThumbState &= ~( UISTATE_CAPTURED | UISTATE_PUSHED );				Invalidate();			}			else if( (m_uButton1State & UISTATE_PUSHED) != 0 ) {				m_uButton1State &= ~UISTATE_PUSHED;				Invalidate();			}			else if( (m_uButton2State & UISTATE_PUSHED) != 0 ) {				m_uButton2State &= ~UISTATE_PUSHED;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSEMOVE )		{			if( (m_uThumbState & UISTATE_CAPTURED) != 0 ) {				if( !m_bHorizontal ) {//.........这里部分代码省略.........

void ZSlider::DoEvent(TEventUI& event){    if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {        if( m_pParent != NULL ) m_pParent->DoEvent(event);        else ZProgress::DoEvent(event);        return;    }    if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )    {        if( IsEnabled() ) {            RECT rcThumb = GetThumbRect();            if( PtInRect(&rcThumb, event.ptMouse) ) {                m_uButtonState |= UISTATE_CAPTURED;            }        }        return;    }    if( event.Type == UIEVENT_BUTTONUP )    {        if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {            m_uButtonState &= ~UISTATE_CAPTURED;        }        if( m_bHorizontal ) {            if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) m_nValue = m_nMax;            else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) m_nValue = m_nMin;            else m_nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);        }        else {            if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) m_nValue = m_nMin;            else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) m_nValue = m_nMax;            else m_nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);        }		DoLuaEvent("valueChanged",GetValue());        Invalidate();        return;    }    if( event.Type == UIEVENT_CONTEXTMENU )    {        return;    }    if( event.Type == UIEVENT_SCROLLWHEEL )     {        switch(event.wParam) {        case SBT_LINEUP:            SetValue(GetValue() + GetChangeStep());            break;        case SBT_LINEDOWN:            SetValue(GetValue() - GetChangeStep());			break;        }		DoLuaEvent("valueChanged",GetValue());		return;    }    if( event.Type == UIEVENT_MOUSEMOVE )    {        if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {            if( m_bHorizontal ) {                if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) m_nValue = m_nMax;                else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) m_nValue = m_nMin;                else m_nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);            }            else {                if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) m_nValue = m_nMin;                else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) m_nValue = m_nMax;                else m_nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);            }            Invalidate();        }        return;    }    //if( event.Type == UIEVENT_SETCURSOR )    //{    //    RECT rcThumb = GetThumbRect();    //    if( IsEnabled() && ::PtInRect(&rcThumb, event.ptMouse) ) {    //        ::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));    //        return;    //    }    //}    if( event.Type == UIEVENT_MOUSEENTER )    {        if( IsEnabled() ) {            m_uButtonState |= UISTATE_HOT;            Invalidate();        }        return;    }    if( event.Type == UIEVENT_MOUSELEAVE )    {        if( IsEnabled() ) {            m_uButtonState &= ~UISTATE_HOT;            Invalidate();        }        return;    }    ZControl::DoEvent(event);}

	void CComboUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CContainerUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETFOCUS ) 		{			Invalidate();		}		if( event.Type == UIEVENT_KILLFOCUS ) 		{			Invalidate();		}		if( event.Type == UIEVENT_BUTTONDOWN )		{			if( IsEnabled() ) {				Activate();				m_uButtonState |= UISTATE_PUSHED | UISTATE_CAPTURED;			}			return;		}		if( event.Type == UIEVENT_BUTTONUP )		{			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				m_uButtonState &= ~ UISTATE_CAPTURED;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSEMOVE )		{			return;		}		if( event.Type == UIEVENT_KEYDOWN )		{			switch( event.chKey ) {			case VK_F4:				Activate();				return;			case VK_UP:				SelectItem(FindSelectable(m_iCurSel - 1, false));				return;			case VK_DOWN:				SelectItem(FindSelectable(m_iCurSel + 1, true));				return;			case VK_PRIOR:				SelectItem(FindSelectable(m_iCurSel - 1, false));				return;			case VK_NEXT:				SelectItem(FindSelectable(m_iCurSel + 1, true));				return;			case VK_HOME:				SelectItem(FindSelectable(0, false));				return;			case VK_END:				SelectItem(FindSelectable(GetCount() - 1, true));				return;			}		}		if( event.Type == UIEVENT_SCROLLWHEEL )		{			bool bDownward = LOWORD(event.wParam) == SB_LINEDOWN;			SelectItem(FindSelectable(m_iCurSel + (bDownward ? 1 : -1), bDownward));			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		if( event.Type == UIEVENT_MOUSEENTER )		{			if( ::PtInRect(&m_rcItem, event.ptMouse ) ) {				if( (m_uButtonState & UISTATE_HOT) == 0  )					m_uButtonState |= UISTATE_HOT;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSELEAVE )		{			if( (m_uButtonState & UISTATE_HOT) != 0 ) {				m_uButtonState &= ~UISTATE_HOT;				Invalidate();			}			return;		}		CControlUI::DoEvent(event);	}

	void CEditUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CLabelUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETCURSOR && IsEnabled() )		{			::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_IBEAM)));			return;		}		if( event.Type == UIEVENT_WINDOWSIZE )		{			if( m_pWindow != NULL ) m_pManager->SetFocusNeeded(this);		}		if( event.Type == UIEVENT_SCROLLWHEEL )		{			if( m_pWindow != NULL ) return;		}		if( event.Type == UIEVENT_SETFOCUS && IsEnabled() ) 		{			if( m_pWindow ) return;			m_pWindow = new CEditWnd();			ASSERT(m_pWindow);			m_pWindow->Init(this);			Invalidate();		}		if( event.Type == UIEVENT_KILLFOCUS && IsEnabled() ) 		{			Invalidate();		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK || event.Type == UIEVENT_RBUTTONDOWN) 		{			if( IsEnabled() ) {				GetManager()->ReleaseCapture();				if( IsFocused() && m_pWindow == NULL )				{					m_pWindow = new CEditWnd();					ASSERT(m_pWindow);					m_pWindow->Init(this);					if( PtInRect(&m_rcItem, event.ptMouse) )					{						int nSize = GetWindowTextLength(*m_pWindow);						if( nSize == 0 )							nSize = 1;						Edit_SetSel(*m_pWindow, 0, nSize);					}				}				else if( m_pWindow != NULL )				{#if 1					int nSize = GetWindowTextLength(*m_pWindow);					if( nSize == 0 )						nSize = 1;					Edit_SetSel(*m_pWindow, 0, nSize);#else					POINT pt = event.ptMouse;					pt.x -= m_rcItem.left + m_rcTextPadding.left;					pt.y -= m_rcItem.top + m_rcTextPadding.top;					::SendMessage(*m_pWindow, WM_LBUTTONDOWN, event.wParam, MAKELPARAM(pt.x, pt.y));#endif				}			}			return;		}		if( event.Type == UIEVENT_MOUSEMOVE ) 		{			return;		}		if( event.Type == UIEVENT_BUTTONUP ) 		{			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		if( event.Type == UIEVENT_MOUSEENTER )		{			if( IsEnabled() ) {				m_uButtonState |= UISTATE_HOT;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSELEAVE )		{			if( IsEnabled() ) {				m_uButtonState &= ~UISTATE_HOT;				Invalidate();			}			return;		}		CLabelUI::DoEvent(event);	}

void CUIButton::DoEvent(TEventUI& Event){	if(!IsMouseEnabled() && Event.Type > UIEVENT__MOUSEBEGIN && Event.Type < UIEVENT__MOUSEEND){		if(m_Parent != NULL)            m_Parent->DoEvent(Event);		else            CUILabel::DoEvent(Event);		return;	}	if(Event.Type == UIEVENT_SETFOCUS){		Invalidate();	}	if(Event.Type == UIEVENT_KILLFOCUS){		Invalidate();	}	if(Event.Type == UIEVENT_KEYDOWN){        //        // TODO: keyboard support.        //		/*if (IsKeyboardEnabled()) {			if( Event.chKey == VK_SPACE || Event.chKey == VK_RETURN ) {				Activate();				return;			}		}*/	}	if(Event.Type == UIEVENT_BUTTONDOWN || Event.Type == UIEVENT_DBLCLICK){		if(m_rcItem.IsPtIn(Event.ptMouse) && IsEnabled()){			m_uButtonState |= UISTATE_PUSHED | UISTATE_CAPTURED;			Invalidate();		}		return;	}	if(Event.Type == UIEVENT_MOUSEMOVE){		if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {            UINT State = m_uButtonState;			if(m_rcItem.IsPtIn(Event.ptMouse))                m_uButtonState |= UISTATE_PUSHED;			else                m_uButtonState &= ~UISTATE_PUSHED;            if (State != m_uButtonState){                Invalidate();            }		}		return;	}	if(Event.Type == UIEVENT_BUTTONUP){		if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {			if(m_rcItem.IsPtIn(Event.ptMouse))                Activate();			m_uButtonState &= ~(UISTATE_PUSHED | UISTATE_CAPTURED);			Invalidate();		}		return;	}	if(Event.Type == UIEVENT_CONTEXTMENU){		/*if( IsContextMenuUsed() ) {			m_pManager->SendNotify(this, DUI_MSGTYPE_MENU, Event.wParam, Event.lParam);		}*/		return;	}	if(Event.Type == UIEVENT_MOUSEENTER){		if(IsEnabled()){			m_uButtonState |= UISTATE_HOT;			Invalidate();		}		// return;	}	if(Event.Type == UIEVENT_MOUSELEAVE)	{		if(IsEnabled()){			m_uButtonState &= ~UISTATE_HOT;			Invalidate();		}		// return;	}	if(Event.Type == UIEVENT_SETCURSOR){		//::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));		return;	}	CUILabel::DoEvent(Event);}

	void CSliderUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CProgressUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )		{			if( IsEnabled() ) {//2014.7.28 redrain 注释掉原来的代码，加上这些代码后可以让Slider不是在鼠标弹起时才改变滑块的位置				m_uButtonState |= UISTATE_CAPTURED;				int nValue;				if( m_bHorizontal ) {					if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) nValue = m_nMax;					else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) nValue = m_nMin;					else nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);				}				else {					if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) nValue = m_nMin;					else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) nValue = m_nMax;					else nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);				}				if(m_nValue !=nValue && nValue>=m_nMin && nValue<=m_nMax)				{					m_nValue =nValue;					Invalidate();				}			}				return;		}// 		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )// 		{// 			if( IsEnabled() ) {// 				RECT rcThumb = GetThumbRect();// 				if( ::PtInRect(&rcThumb, event.ptMouse) ) {// 					m_uButtonState |= UISTATE_CAPTURED;// 				}// 			}// 			return;// 		}		if( event.Type == UIEVENT_BUTTONUP )		{			int nValue;			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				m_uButtonState &= ~UISTATE_CAPTURED;			}			if( m_bHorizontal ) {				if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) nValue = m_nMax;				else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) nValue = m_nMin;				else nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);			}			else {				if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) nValue = m_nMin;				else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) nValue = m_nMax;				else nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);			}			if(/*m_nValue !=nValue && 2014.7.28 redrain 这个注释很关键，是他导致了鼠标拖动滑块无法发出DUI_MSGTYPE_VALUECHANGED消息*/nValue>=m_nMin && nValue<=m_nMax)			{				m_nValue =nValue;				m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);				Invalidate();			}			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		if( event.Type == UIEVENT_SCROLLWHEEL ) 		{			switch( LOWORD(event.wParam) ) {		case SB_LINEUP:			SetValue(GetValue() + GetChangeStep());			m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);			return;		case SB_LINEDOWN:			SetValue(GetValue() - GetChangeStep());			m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);			return;			}		}		if( event.Type == UIEVENT_MOUSEMOVE )		{			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {//2014.7.28 redrain 重写这个消息判断让Slider发出DUI_MSGTYPE_VALUECHANGED_MOVE消息，让他在滑动过程也发出消息，比如用在改变音量时，一边滑动就可以一边改变音量				if( m_bHorizontal ) {					if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) m_nValue = m_nMax;					else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) m_nValue = m_nMin;					else m_nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);				}				else {					if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) m_nValue = m_nMin;					else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) m_nValue = m_nMax;					else m_nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);				}				if (m_bSendMove)					m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED_MOVE);//.........这里部分代码省略.........

void CGroupsUI::DoEvent(TEventUI& event) {	if (!IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND)	{		if (m_pParent != NULL)			m_pParent->DoEvent(event);		else			CVerticalLayoutUI::DoEvent(event);		return;	}	if (event.Type == UIEVENT_TIMER && event.wParam == SCROLL_TIMERID)	{		if (delay_left_ > 0)		{			--delay_left_;			SIZE sz = GetScrollPos();			LONG lDeltaY =  (LONG)(CalculateDelay((double)delay_left_ / delay_number_) * delay_deltaY_);			if ((lDeltaY > 0 && sz.cy != 0)  || (lDeltaY < 0 && sz.cy != GetScrollRange().cy ))			{				sz.cy -= lDeltaY;				SetScrollPos(sz);				return;			}		}		delay_deltaY_ = 0;		delay_number_ = 0;		delay_left_ = 0;		m_pManager->KillTimer(this, SCROLL_TIMERID);		return;	}	if (event.Type == UIEVENT_SCROLLWHEEL)	{		LONG lDeltaY = 0;		if (delay_number_ > 0)			lDeltaY =  (LONG)(CalculateDelay((double)delay_left_ / delay_number_) * delay_deltaY_);		switch (LOWORD(event.wParam))		{		case SB_LINEUP:			if (delay_deltaY_ >= 0)				delay_deltaY_ = lDeltaY + 8;			else				delay_deltaY_ = lDeltaY + 12;			break;		case SB_LINEDOWN:			if (delay_deltaY_ <= 0)				delay_deltaY_ = lDeltaY - 8;			else				delay_deltaY_ = lDeltaY - 12;			break;		}		if			(delay_deltaY_ > 100) delay_deltaY_ = 100;		else if			(delay_deltaY_ < -100) delay_deltaY_ = -100;		delay_number_ = (DWORD)sqrt((double)abs(delay_deltaY_)) * 5;		delay_left_ = delay_number_;		m_pManager->SetTimer(this, SCROLL_TIMERID, 50U);		return;	}	CListUI::DoEvent(event);}

	void CSliderUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CProgressUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )		{			if( IsEnabled() ) {				RECT rcThumb = GetThumbRect();				if( ::PtInRect(&rcThumb, event.ptMouse) ) {					m_uButtonState |= UISTATE_CAPTURED;				}			}			return;		}		if( event.Type == UIEVENT_BUTTONUP )		{			int nValue;			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				m_uButtonState &= ~UISTATE_CAPTURED;			}			if( m_bHorizontal ) {				if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) nValue = m_nMax;				else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) nValue = m_nMin;				else nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);			}			else {				if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) nValue = m_nMin;				else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) nValue = m_nMax;				else nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);			}			if(m_nValue !=nValue && nValue>=m_nMin && nValue<=m_nMax)			{				m_nValue =nValue;				m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);				Invalidate();			}			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		if( event.Type == UIEVENT_SCROLLWHEEL ) 		{			switch( LOWORD(event.wParam) ) {		case SB_LINEUP:			SetValue(GetValue() + GetChangeStep());			m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);			return;		case SB_LINEDOWN:			SetValue(GetValue() - GetChangeStep());			m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);			return;			}		}		if( event.Type == UIEVENT_MOUSEMOVE )		{			if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {				if( m_bHorizontal ) {					if( event.ptMouse.x >= m_rcItem.right - m_szThumb.cx / 2 ) m_nValue = m_nMax;					else if( event.ptMouse.x <= m_rcItem.left + m_szThumb.cx / 2 ) m_nValue = m_nMin;					else m_nValue = m_nMin + (m_nMax - m_nMin) * (event.ptMouse.x - m_rcItem.left - m_szThumb.cx / 2 ) / (m_rcItem.right - m_rcItem.left - m_szThumb.cx);					m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);				}				else {					if( event.ptMouse.y >= m_rcItem.bottom - m_szThumb.cy / 2 ) m_nValue = m_nMin;					else if( event.ptMouse.y <= m_rcItem.top + m_szThumb.cy / 2  ) m_nValue = m_nMax;					else m_nValue = m_nMin + (m_nMax - m_nMin) * (m_rcItem.bottom - event.ptMouse.y - m_szThumb.cy / 2 ) / (m_rcItem.bottom - m_rcItem.top - m_szThumb.cy);					m_pManager->SendNotify(this, DUI_MSGTYPE_VALUECHANGED);				}				Invalidate();			}			return;		}		if( event.Type == UIEVENT_SETCURSOR )		{			RECT rcThumb = GetThumbRect();			if( IsEnabled() && ::PtInRect(&rcThumb, event.ptMouse) ) {				::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));				return;			}		}		if( event.Type == UIEVENT_MOUSEENTER )		{			if( IsEnabled() ) {				m_uButtonState |= UISTATE_HOT;				Invalidate();			}			return;		}		if( event.Type == UIEVENT_MOUSELEAVE )		{			if( IsEnabled() ) {				m_uButtonState &= ~UISTATE_HOT;				Invalidate();			}//.........这里部分代码省略.........

	void CContainerUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CControlUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETFOCUS ) 		{			m_bFocused = true;			return;		}		if( event.Type == UIEVENT_KILLFOCUS ) 		{			m_bFocused = false;			return;		}		if( m_pVerticalScrollBar != NULL && m_pVerticalScrollBar->IsVisible() && m_pVerticalScrollBar->IsEnabled() )		{			if( event.Type == UIEVENT_KEYDOWN ) 			{				switch( event.chKey ) {				case VK_DOWN:					LineDown();					return;				case VK_UP:					LineUp();					return;				case VK_NEXT:					PageDown();					return;				case VK_PRIOR:					PageUp();					return;				case VK_HOME:					HomeUp();					return;				case VK_END:					EndDown();					return;				}			}			else if( event.Type == UIEVENT_SCROLLWHEEL )			{				switch( LOWORD(event.wParam) ) {				case SB_LINEUP:					LineUp();					return;				case SB_LINEDOWN:					LineDown();					return;				}			}		}		if( m_pHorizontalScrollBar != NULL && m_pHorizontalScrollBar->IsVisible() && m_pHorizontalScrollBar->IsEnabled() ) {			if( event.Type == UIEVENT_KEYDOWN ) 			{				switch( event.chKey ) {				case VK_DOWN:					LineRight();					return;				case VK_UP:					LineLeft();					return;				case VK_NEXT:					PageRight();					return;				case VK_PRIOR:					PageLeft();					return;				case VK_HOME:					HomeLeft();					return;				case VK_END:					EndRight();					return;				}			}			else if( event.Type == UIEVENT_SCROLLWHEEL )			{				switch( LOWORD(event.wParam) ) {				case SB_LINEUP:					LineLeft();					return;				case SB_LINEDOWN:					LineRight();					return;				}			}		}		CControlUI::DoEvent(event);	}

	void CDateTimeUI::DoEvent(TEventUI& event)	{		if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {			if( m_pParent != NULL ) m_pParent->DoEvent(event);			else CLabelUI::DoEvent(event);			return;		}		if( event.Type == UIEVENT_SETCURSOR && IsEnabled() )		{			::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_IBEAM)));			return;		}		if( event.Type == UIEVENT_WINDOWSIZE )		{			if( m_pWindow != NULL ) m_pManager->SetFocusNeeded(this);		}		if( event.Type == UIEVENT_SCROLLWHEEL )		{			if( m_pWindow != NULL ) return;		}		if( event.Type == UIEVENT_SETFOCUS && IsEnabled() ) 		{			if( m_pWindow ) return;			m_pWindow = new CDateTimeWnd();			ASSERT(m_pWindow);			m_pWindow->Init(this);			m_pWindow->ShowWindow();		}		if( event.Type == UIEVENT_KILLFOCUS && IsEnabled() ) 		{			Invalidate();		}		if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK || event.Type == UIEVENT_RBUTTONDOWN) 		{			if( IsEnabled() ) {				GetManager()->ReleaseCapture();				if( IsFocused() && m_pWindow == NULL )				{					m_pWindow = new CDateTimeWnd();					ASSERT(m_pWindow);				}				if( m_pWindow != NULL )				{					m_pWindow->Init(this);					m_pWindow->ShowWindow();				}			}			return;		}		if( event.Type == UIEVENT_MOUSEMOVE ) 		{			return;		}		if( event.Type == UIEVENT_BUTTONUP ) 		{			return;		}		if( event.Type == UIEVENT_CONTEXTMENU )		{			return;		}		CLabelUI::DoEvent(event);	}

void CWebkitUI::DoEvent(TEventUI& event){    if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {        if( m_pParent != NULL ) m_pParent->DoEvent(event);        else CControlUI::DoEvent(event);        return;    }    if (bitmap_bits_ == NULL || view_ == NULL || !finish_layout_) return;    if( event.Type == UIEVENT_SETFOCUS )    {        view_->OnFocusChangeEvent(true);    }    if( event.Type == UIEVENT_KILLFOCUS )    {        view_->OnFocusChangeEvent(false);    }    if( event.Type == UIEVENT_CHAR )    {        KeyboardEvent keyEvent = {0};        keyEvent.mId = event.chKey;        keyEvent.mbChar = true;        keyEvent.mbDepressed = false;        keyEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        keyEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        keyEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnKeyboardEvent(keyEvent);    }    if( event.Type == UIEVENT_KEYDOWN )    {        KeyboardEvent keyEvent = {0};        keyEvent.mId = event.chKey;        keyEvent.mbChar = false;        keyEvent.mbDepressed = true;        keyEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        keyEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        keyEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnKeyboardEvent(keyEvent);    }    if( event.Type == UIEVENT_KEYUP )    {        KeyboardEvent keyEvent = {0};        keyEvent.mId = event.chKey;        keyEvent.mbChar = false;        keyEvent.mbDepressed = false;        keyEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        keyEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        keyEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnKeyboardEvent(keyEvent);    }    if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK || event.Type == UIEVENT_BUTTONUP )    {        MouseButtonEvent mouseEvent = {0};        mouseEvent.mX = event.ptMouse.x - m_rcItem.left;        mouseEvent.mY = event.ptMouse.y - m_rcItem.top;        mouseEvent.mId = kMouseLeft;        if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK )            mouseEvent.mbDepressed = true;        else            mouseEvent.mbDepressed = false;        mouseEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        mouseEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        mouseEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnMouseButtonEvent(mouseEvent);        return;    }    if( event.Type == UIEVENT_MOUSEMOVE )    {        MouseMoveEvent mouseEvent = {0};        mouseEvent.mX = event.ptMouse.x - m_rcItem.left;        mouseEvent.mY = event.ptMouse.y - m_rcItem.top;        mouseEvent.mDX = event.ptMouse.x - last_mouse_point_.x;        mouseEvent.mDY = event.ptMouse.y - last_mouse_point_.y;        mouseEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        mouseEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        mouseEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnMouseMoveEvent(mouseEvent);        last_mouse_point_.x = mouseEvent.mX;        last_mouse_point_.y = mouseEvent.mY;        return;    }    if( event.Type == UIEVENT_SCROLLWHEEL )    {        MouseWheelEvent mouseEvent = {0};        mouseEvent.mX = event.ptMouse.x - m_rcItem.left;        mouseEvent.mY = event.ptMouse.y - m_rcItem.top;        // default value is 3        int uLineDelta = 3;        SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &uLineDelta, 0);        if( LOWORD(event.wParam) == SB_LINEUP ) mouseEvent.mLineDelta = static_cast<float>(uLineDelta);        else mouseEvent.mLineDelta = static_cast<float>(-uLineDelta);        mouseEvent.mbShift = ((event.wKeyState & MK_SHIFT) != 0);        mouseEvent.mbControl = ((event.wKeyState & MK_CONTROL) != 0);        mouseEvent.mbAlt = ((event.wKeyState & MK_ALT) != 0);        view_->OnMouseWheelEvent(mouseEvent);        return;//.........这里部分代码省略.........