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windows-nt/Source/XPSP1/NT/enduser/stuff/hhctrl/ctlmisc.cpp

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2020-09-26 03:20:57 -05:00
// Copyright (C) 1996-1997 Microsoft Corporation. All rights reserved.
#include "header.h"
#include "CtlHelp.H"
#include "StdEnum.H"
#include "internet.h"
#include "hhctrl.h"
#include <stddef.h>
#include <stdarg.h>
#ifndef _DEBUG
#undef THIS_FILE
static const char THIS_FILE[] = __FILE__;
#endif
// this is used in our window proc so that we can find out who was last created
static COleControl *s_pLastControlCreated;
//=--------------------------------------------------------------------------=
// COleControl::COleControl
//=--------------------------------------------------------------------------=
// constructor
//
// Parameters:
// IUnknown * - [in] controlling Unknown
// int - [in] type of primary dispatch interface OBJECT_TYPE_*
// void * - [in] pointer to entire object
//
// Notes:
//
COleControl::COleControl
(
IUnknown *pUnkOuter,
int iPrimaryDispatch,
void *pMainInterface
)
: CAutomationObject(pUnkOuter, iPrimaryDispatch, pMainInterface),
m_cpEvents(SINK_TYPE_EVENT),
m_cpPropNotify(SINK_TYPE_PROPNOTIFY)
{
// initialize all our variables -- we decided against using a memory-zeroing
// memory allocator, so we sort of have to do this work now ...
//
m_nFreezeEvents = 0;
m_pClientSite = NULL;
m_pControlSite = NULL;
m_pInPlaceSite = NULL;
m_pInPlaceFrame = NULL;
m_pInPlaceUIWindow = NULL;
m_pInPlaceSiteWndless = NULL;
// certain hosts don't like 0,0 as your initial size, so we're going to set
// our initial size to 100,50 [so it's at least sort of visible on the screen]
m_Size.cx = 100;
m_Size.cy = 50;
SetRectEmpty(&m_rcLocation);
m_hwnd = NULL;
m_hwndParent = NULL;
m_nFreezeEvents = 0;
// m_pSimpleFrameSite = NULL;
m_pOleAdviseHolder = NULL;
m_pViewAdviseSink = NULL;
m_pDispAmbient = NULL;
m_fDirty = FALSE;
m_fModeFlagValid = FALSE;
m_fInPlaceActive = FALSE;
m_fInPlaceVisible = FALSE;
m_fUIActive = FALSE;
m_fSaveSucceeded = FALSE;
m_fViewAdvisePrimeFirst = FALSE;
m_fViewAdviseOnlyOnce = FALSE;
m_fRunMode = FALSE;
}
//=--------------------------------------------------------------------------=
// COleControl::~COleControl
//=--------------------------------------------------------------------------=
// "We are all of us resigned to death; it's life we aren't resigned to."
// - Graham Greene (1904-91)
//
// Notes:
//
COleControl::~COleControl()
{
// if we've still got a window, go and kill it now.
//
if (m_hwnd) {
// so our window proc doesn't crash.
//
SetWindowLong(m_hwnd, GWLP_USERDATA, 0xFFFFFFFF);
DestroyWindow(m_hwnd);
}
// clean up all the pointers we're holding around.
QUICK_RELEASE(m_pClientSite);
QUICK_RELEASE(m_pControlSite);
QUICK_RELEASE(m_pInPlaceSite);
QUICK_RELEASE(m_pInPlaceFrame);
QUICK_RELEASE(m_pInPlaceUIWindow);
// QUICK_RELEASE(m_pSimpleFrameSite);
QUICK_RELEASE(m_pOleAdviseHolder);
QUICK_RELEASE(m_pViewAdviseSink);
QUICK_RELEASE(m_pDispAmbient);
QUICK_RELEASE(m_pInPlaceSiteWndless);
}
//=--------------------------------------------------------------------------=
// COleControl::InternalQueryInterface
//=--------------------------------------------------------------------------=
// derived-controls should delegate back to this when they decide to support
// additional interfaces
//
// Parameters:
// REFIID - [in] interface they want
// void ** - [out] where they want to put the resulting object ptr.
//
// Output:
// HRESULT - S_OK, E_NOINTERFACE
//
// Notes:
// - NOTE: this function is speed critical!!!!
// Using the typedef'd enum lets use see what the value of riid.Data1 is
typedef enum {
tgIUnknown = 0x00000000,
tgIClassFactory = 0x00000001,
tgIMalloc = 0x00000002,
tgIMarshal = 0x00000003,
tgIPSFactory = 0x00000009,
tgILockBytes = 0x0000000a,
tgIStorage = 0x0000000b,
tgIStream = 0x0000000c,
tgIEnumSTATSTG = 0x0000000d,
tgIBindCtx = 0x0000000e,
tgIMoniker = 0x0000000f,
tgIRunningObjectTable = 0x00000010,
tgIInternalMoniker = 0x00000011,
tgIRootStorage = 0x00000012,
tgIMessageFilter = 0x00000016,
tgIStdMarshalInfo = 0x00000018,
tgIExternalConnection = 0x00000019,
tgIWeakRef = 0x0000001a,
tgIEnumUnknown = 0x00000100,
tgIEnumString = 0x00000101,
tgIEnumMoniker = 0x00000102,
tgIEnumFORMATETC = 0x00000103,
tgIEnumOLEVERB = 0x00000104,
tgIEnumSTATDATA = 0x00000105,
tgIEnumGeneric = 0x00000106,
tgIEnumHolder = 0x00000107,
tgIEnumCallback = 0x00000108,
tgIPersistStream = 0x00000109,
tgIPersistStorage = 0x0000010a,
tgIPersistFile = 0x0000010b,
tgIPersist = 0x0000010c,
tgIViewObject = 0x0000010d,
tgIDataObject = 0x0000010e,
tgIAdviseSink = 0x0000010f,
tgIDataAdviseHolder = 0x00000110,
tgIOleAdviseHolder = 0x00000111,
tgIOleObject = 0x00000112,
tgIOleInPlaceObject = 0x00000113,
tgIOleWindow = 0x00000114,
tgIOleInPlaceUIWindow = 0x00000115,
tgIOleInPlaceFrame = 0x00000116,
tgIOleInPlaceActiveObject = 0x00000117,
tgIOleClientSite = 0x00000118,
tgIOleInPlaceSite = 0x00000119,
tgIParseDisplayName = 0x0000011a,
tgIOleContainer = 0x0000011b,
tgIOleItemContainer = 0x0000011c,
tgIOleLink = 0x0000011d,
tgIOleCache = 0x0000011e,
tgIOleManager = 0x0000011f,
tgIOlePresObj = 0x00000120,
tgIDropSource = 0x00000121,
tgIDropTarget = 0x00000122,
tgIAdviseSink2 = 0x00000125,
tgIRunnableObject = 0x00000126,
tgIViewObject2 = 0x00000127,
tgIOleCache2 = 0x00000128,
tgIOleCacheControl = 0x00000129,
tgIDispatch = 0x00020400,
tgITypeInfo = 0x00020401,
tgITypeLib = 0x00020402,
tgITypeComp = 0x00020403,
tgIEnumVARIANT = 0x00020404,
tgICreateTypeInfo = 0x00020405,
tgICreateTypeLib = 0x00020406,
tgIPropertyPage2 = 0x01e44665,
tgIOleInPlaceObjectWindowless = 0x1c2056cc,
tgIErrorInfo = 0x1cf2b120,
tgICreateErrorInfo = 0x22f03340,
tgIPerPropertyBrowsing = 0x376bd3aa,
tgIPersistPropertyBag = 0x37D84F60,
tgIAdviseSinkEx = 0x3af24290,
tgIViewObjectEx = 0x3af24292,
tgICategorizeProperties = 0x4d07fc10,
tgIPointerInactive = 0x55980ba0,
tgIFormExpert = 0x5aac7f70,
tgIOleInPlaceComponent = 0x5efc7970,
tgIGangConnectWithDefault = 0x6d5140c0,
tgIServiceProvider = 0x6d5140c1,
tgISelectionContainer = 0x6d5140c6,
tgIRequireClasses = 0x6d5140d0,
tgIProvideDynamicClassInfo = 0x6d5140d1,
tgIDataFrameExpert = 0x73687490,
tgISimpleFrameSite = 0x742b0e01,
tgIPicture = 0x7bf80980,
tgIPictureDisp = 0x7bf80981,
tgIPersistStreamInit = 0x7fd52380,
tgIOleUndoAction = 0x894ad3b0,
tgIOleInPlaceSiteWindowless = 0x922eada0,
tgIDataFrame = 0x97F254E0,
tgIControl_95 = 0x9a4bbfb5,
tgIPropertyNotifySink = 0x9bfbbc02,
tgIOleInPlaceSiteEx = 0x9c2cad80,
tgIOleCompoundUndoAction = 0xa1faf330,
tgIControl = 0xa7fddba0,
tgIProvideClassInfo = 0xb196b283,
tgIConnectionPointContainer = 0xb196b284,
tgIEnumConnectionPoints = 0xb196b285,
tgIConnectionPoint = 0xb196b286,
tgIEnumConnections = 0xb196b287,
tgIOleControl = 0xb196b288,
tgIOleControlSite = 0xb196b289,
tgISpecifyPropertyPages = 0xb196b28b,
tgIPropertyPageSite = 0xb196b28c,
tgIPropertyPage = 0xb196b28d,
tgIClassFactory2 = 0xb196b28f,
tgIEnumOleUndoActions = 0xb3e7c340,
tgIMsoDocument = 0xb722bcc5,
tgIMsoView = 0xb722bcc6,
tgIMsoCommandTarget = 0xb722bccb,
tgIOlePropertyFrame = 0xb83bb801,
tgIPropertyPageInPlace = 0xb83bb802,
tgIPropertyPage3 = 0xb83bb803,
tgIPropertyPageSite2 = 0xb83bb804,
tgIFont = 0xbef6e002,
tgIFontDisp = 0xbef6e003,
tgIQuickActivate = 0xcf51ed10,
tgIOleUndoActionManager = 0xd001f200,
tgIPSFactoryBuffer = 0xd5f569d0,
tgIOleStandardTool = 0xd97877c4,
tgISupportErrorInfo = 0xdf0b3d60,
tgICDataDoc = 0xF413E4C0,
} DATA1_GUIDS;
HRESULT COleControl::InternalQueryInterface(REFIID riid, void **ppvObjOut)
{
#ifdef _DEBUG
DATA1_GUIDS gd = (DATA1_GUIDS) riid.Data1;
#endif
switch (riid.Data1) {
// private interface for prop page support
case Data1_IControlPrv:
if (DO_GUIDS_MATCH(riid, IID_IControlPrv)) {
*ppvObjOut = (void *)this;
ExternalAddRef();
return S_OK;
}
goto NoInterface;
case Data1_IOleControl:
if (DO_GUIDS_MATCH(riid, IID_IOleControl))
*ppvObjOut = (void *) (IOleControl*) this;
break;
case Data1_IPointerInactive:
if (DO_GUIDS_MATCH(riid, IID_IPointerInactive))
*ppvObjOut = (void *) (IPointerInactive*) this;
break;
case Data1_IQuickActivate:
if (DO_GUIDS_MATCH(riid, IID_IQuickActivate))
*ppvObjOut = (void *) (IQuickActivate*) this;
break;
case Data1_IOleObject:
if (DO_GUIDS_MATCH(riid, IID_IOleObject))
*ppvObjOut = (void *) (IOleObject*) this;
break;
QI_INHERITS((IPersistStorage *)this, IPersist);
QI_INHERITS(this, IPersistStreamInit);
QI_INHERITS(this, IOleInPlaceObject);
QI_INHERITS(this, IOleInPlaceObjectWindowless);
QI_INHERITS((IOleInPlaceActiveObject *)this, IOleWindow);
QI_INHERITS(this, IOleInPlaceActiveObject);
QI_INHERITS(this, IViewObject);
QI_INHERITS(this, IViewObject2);
QI_INHERITS(this, IViewObjectEx);
QI_INHERITS(this, IConnectionPointContainer);
// QI_INHERITS(this, ISpecifyPropertyPages);
QI_INHERITS(this, IPersistStorage);
QI_INHERITS(this, IPersistPropertyBag);
QI_INHERITS(this, IProvideClassInfo);
default:
goto NoInterface;
}
// we like the interface, so addref and return
((IUnknown *)(*ppvObjOut))->AddRef();
return S_OK;
NoInterface:
// delegate to super-class for automation interfaces, etc ...
return CAutomationObject::InternalQueryInterface(riid, ppvObjOut);
}
//=--------------------------------------------------------------------------=
// COleControl::FindConnectionPoint [IConnectionPointContainer]
//=--------------------------------------------------------------------------=
// given an IID, find a connection point sink for it.
//
// Parameters:
// REFIID - [in] interfaces they want
// IConnectionPoint ** - [out] where the cp should go
//
// Output:
// HRESULT
STDMETHODIMP COleControl::FindConnectionPoint(REFIID riid, IConnectionPoint **ppConnectionPoint)
{
CHECK_POINTER(ppConnectionPoint);
// we support the event interface, and IDispatch for it, and we also
// support IPropertyNotifySink.
//
if (DO_GUIDS_MATCH(riid, EVENTIIDOFCONTROL(m_ObjectType)) || DO_GUIDS_MATCH(riid, IID_IDispatch))
*ppConnectionPoint = &m_cpEvents;
else if (DO_GUIDS_MATCH(riid, IID_IPropertyNotifySink))
*ppConnectionPoint = &m_cpPropNotify;
else
return E_NOINTERFACE;
// generic post-processing.
//
(*ppConnectionPoint)->AddRef();
return S_OK;
}
//=--------------------------------------------------------------------------=
// COleControl::EnumConnectionPoints [IConnectionPointContainer]
//=--------------------------------------------------------------------------=
// creates an enumerator for connection points.
//
// Parameters:
// IEnumConnectionPoints ** - [out]
//
// Output:
// HRESULT
STDMETHODIMP COleControl::EnumConnectionPoints(IEnumConnectionPoints **ppEnumConnectionPoints)
{
IConnectionPoint **rgConnectionPoints;
CHECK_POINTER(ppEnumConnectionPoints);
// Alloc an array of connection points [since our standard enum
// assumes this and free's it later ]
rgConnectionPoints = (IConnectionPoint **) lcCalloc(sizeof(IConnectionPoint *) * 2);
RETURN_ON_NULLALLOC(rgConnectionPoints);
// we support the event interface for this dude as well as IPropertyNotifySink
//
rgConnectionPoints[0] = &m_cpEvents;
rgConnectionPoints[1] = &m_cpPropNotify;
*ppEnumConnectionPoints = (IEnumConnectionPoints *)(IEnumGeneric *) new CStandardEnum(IID_IEnumConnectionPoints,
2, sizeof(IConnectionPoint *), (void *)rgConnectionPoints,
CopyAndAddRefObject);
if (!*ppEnumConnectionPoints) {
lcFree(rgConnectionPoints);
return E_OUTOFMEMORY;
}
return S_OK;
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::m_pOleControl
//=--------------------------------------------------------------------------=
// returns a pointer to the control in which we are nested.
//
// Output:
// COleControl *
//
// Notes:
//
inline COleControl *COleControl::CConnectionPoint::m_pOleControl
(
void
)
{
return (COleControl *)((BYTE *)this - ((m_bType == SINK_TYPE_EVENT)
? offsetof(COleControl, m_cpEvents)
: offsetof(COleControl, m_cpPropNotify)));
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::QueryInterface
//=--------------------------------------------------------------------------=
// standard qi
//
// Parameters:
// REFIID - [in] interface they want
// void ** - [out] where they want to put the resulting object ptr.
//
// Output:
// HRESULT - S_OK, E_NOINTERFACE
STDMETHODIMP COleControl::CConnectionPoint::QueryInterface
(
REFIID riid,
void **ppvObjOut
)
{
if (DO_GUIDS_MATCH(riid, IID_IConnectionPoint) || DO_GUIDS_MATCH(riid, IID_IUnknown)) {
*ppvObjOut = (IConnectionPoint *)this;
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
ULONG COleControl::CConnectionPoint::AddRef(void)
{
return m_pOleControl()->ExternalAddRef();
}
ULONG COleControl::CConnectionPoint::Release(void)
{
return m_pOleControl()->ExternalRelease();
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::GetConnectionInterface
//=--------------------------------------------------------------------------=
// returns the interface we support connections on.
//
// Parameters:
// IID * - [out] interface we support.
//
// Output:
// HRESULT
STDMETHODIMP COleControl::CConnectionPoint::GetConnectionInterface(IID *piid)
{
if (m_bType == SINK_TYPE_EVENT)
*piid = EVENTIIDOFCONTROL(m_pOleControl()->m_ObjectType);
else
*piid = IID_IPropertyNotifySink;
return S_OK;
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::GetConnectionPointContainer
//=--------------------------------------------------------------------------=
// returns the connection point container
//
// Parameters:
// IConnectionPointContainer **ppCPC
//
// Output:
// HRESULT
STDMETHODIMP COleControl::CConnectionPoint::GetConnectionPointContainer(IConnectionPointContainer **ppCPC)
{
return m_pOleControl()->ExternalQueryInterface(IID_IConnectionPointContainer, (void **)ppCPC);
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectiontPoint::Advise
//=--------------------------------------------------------------------------=
// someboyd wants to be advised when something happens.
//
// Parameters:
// IUnknown * - [in] guy who wants to be advised.
// DWORD * - [out] cookie
//
// Output:
// HRESULT
STDMETHODIMP COleControl::CConnectionPoint::Advise(IUnknown *pUnk, DWORD *pdwCookie)
{
HRESULT hr;
void *pv;
CHECK_POINTER(pdwCookie);
// first, make sure everybody's got what they thinks they got
if (m_bType == SINK_TYPE_EVENT) {
/*
* CONSIDER: 12.95 -- this theoretically is broken -- if they do
* a find connection point on IDispatch, and they just happened to
* also support the Event IID, we'd advise on that. this is not
* awesome, but will prove entirely acceptable short term.
*/
hr = pUnk->QueryInterface(EVENTIIDOFCONTROL(m_pOleControl()->m_ObjectType), &pv);
if (FAILED(hr))
hr = pUnk->QueryInterface(IID_IDispatch, &pv);
}
else
hr = pUnk->QueryInterface(IID_IPropertyNotifySink, &pv);
RETURN_ON_FAILURE(hr);
// finally, add the sink. It's now been cast to the correct type and has
// been AddRef'd.
return AddSink(pv, pdwCookie);
}
#ifdef _WIN64
IUnknown* COleControl::CConnectionPoint::CookieToSink( DWORD dwCookie )
{
for ( short i=0; i<m_cSinks; i++ )
{
if ( m_rgSinks64[i].dwCookie == dwCookie )
return m_rgSinks64[i].pUnk;
}
return NULL;
}
DWORD COleControl::CConnectionPoint::NextCookie()
{
DWORD dw = m_dwNextCookie;
if ( dw==0 )
{
// Try to find an available cookie
// There must be an available cookie, since m_cSinks is a short, cookie is DWORD
dw = 1;
while ( CookieToSink(dw) != NULL ) // dw is used
dw++;
}
else
m_dwNextCookie++;
return dw;
}
#endif
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::AddSink
//=--------------------------------------------------------------------------=
// in some cases, we'll already have done the QI, and won't need to do the
// work that is done in the Advise routine above. thus, these people can
// just call this instead. [this stems really from IQuickActivate]
//
// Parameters:
// void * - [in] the sink to add. it's already been addref'd
// DWORD * - [out] cookie
//
// Output:
// HRESULT
HRESULT COleControl::CConnectionPoint::AddSink(void *pv, DWORD *pdwCookie)
{
#ifdef _WIN64
CONNECTDATA* rgUnkNew;
if ( m_cSinks == 0 )
{
ASSERT_COMMENT(!m_rgSinks64, "this should be null when there are no sinks");
m_rgSinks64 = (CONNECTDATA*)lcCalloc(8 * sizeof(CONNECTDATA));
RETURN_ON_NULLALLOC(m_rgSinks64);
}
else if (!(m_cSinks & 0x7)) {
rgUnkNew = (CONNECTDATA*)lcReAlloc(m_rgSinks64, (m_cSinks + 8) * sizeof(CONNECTDATA));
RETURN_ON_NULLALLOC(rgUnkNew);
m_rgSinks64 = rgUnkNew;
}
m_rgSinks64[m_cSinks].pUnk = (IUnknown *)pv;
*pdwCookie = m_rgSinks64[m_cSinks].dwCookie = NextCookie();
m_cSinks++;
return S_OK;
#else
IUnknown **rgUnkNew;
int i = 0;
// we optimize the case where there is only one sink to not allocate
// any storage. turns out very rarely is there more than one.
//
switch (m_cSinks) {
case 0:
ASSERT_COMMENT(!m_rgSinks, "this should be null when there are no sinks");
m_rgSinks = (IUnknown **)pv;
break;
case 1:
// go ahead and do the initial allocation. we'll get 8 at a time
rgUnkNew = (IUnknown **)lcCalloc(8 * sizeof(IUnknown *));
RETURN_ON_NULLALLOC(rgUnkNew);
rgUnkNew[0] = (IUnknown *)m_rgSinks;
rgUnkNew[1] = (IUnknown *)pv;
m_rgSinks = rgUnkNew;
break;
default:
// if we're out of sinks, then we have to increase the size
// of the array
if (!(m_cSinks & 0x7)) {
rgUnkNew = (IUnknown **) lcReAlloc(m_rgSinks, (m_cSinks + 8) * sizeof(IUnknown *));
RETURN_ON_NULLALLOC(rgUnkNew);
m_rgSinks = rgUnkNew;
} else
rgUnkNew = m_rgSinks;
rgUnkNew[m_cSinks] = (IUnknown *)pv;
break;
}
*pdwCookie = (DWORD)pv;
m_cSinks++;
return S_OK;
#endif
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::Unadvise
//=--------------------------------------------------------------------------=
// they don't want to be told any more.
//
// Parameters:
// DWORD - [in] the cookie we gave 'em.
//
// Output:
// HRESULT
STDMETHODIMP COleControl::CConnectionPoint::Unadvise(DWORD dwCookie)
{
IUnknown *pUnk;
int x;
if (!dwCookie)
return S_OK;
// see how many sinks we've currently got, and deal with things based
// on that.
#ifdef _WIN64
pUnk = CookieToSink(dwCookie);
if (pUnk == NULL)
return CONNECT_E_NOCONNECTION;
switch (m_cSinks) {
case 1:
lcFree(m_rgSinks64);
m_rgSinks64 = NULL;
m_dwNextCookie = 1;
break;
default:
// there are more than one sinks. just clean up the hole we've
// got in our array now.
//
for (x = 0; x < m_cSinks; x++)
{
if ((DWORD)m_rgSinks64[x].dwCookie == dwCookie)
break;
}
if (x == m_cSinks)
return CONNECT_E_NOCONNECTION;
else // (x < m_cSinks - 1)
memcpy(&(m_rgSinks64[x]), &(m_rgSinks64[x + 1]), (m_cSinks -1 - x) * sizeof(CONNECTDATA));
break;
}
// we're happy
//
m_cSinks--;
pUnk->Release();
return S_OK;
#else
switch (m_cSinks) {
case 1:
// it's the only sink. make sure the ptrs are the same, and
// then free things up
if ((DWORD)m_rgSinks != dwCookie)
return CONNECT_E_NOCONNECTION;
m_rgSinks = NULL;
break;
case 2:
// there are two sinks. go back down to one sink scenario
//
if ((DWORD)m_rgSinks[0] != dwCookie && (DWORD)m_rgSinks[1] != dwCookie)
return CONNECT_E_NOCONNECTION;
pUnk = ((DWORD)m_rgSinks[0] == dwCookie)
? m_rgSinks[1]
: ((DWORD)m_rgSinks[1] == dwCookie) ? m_rgSinks[0] : NULL;
if (!pUnk) return CONNECT_E_NOCONNECTION;
lcFree(m_rgSinks);
m_rgSinks = (IUnknown **)pUnk;
break;
default:
// there are more than two sinks. just clean up the hole we've
// got in our array now.
//
for (x = 0; x < m_cSinks; x++) {
if ((DWORD)m_rgSinks[x] == dwCookie)
break;
}
if (x == m_cSinks) return CONNECT_E_NOCONNECTION;
if (x < m_cSinks - 1)
memcpy(&(m_rgSinks[x]), &(m_rgSinks[x + 1]), (m_cSinks -1 - x) * sizeof(IUnknown *));
else
m_rgSinks[x] = NULL;
break;
}
// we're happy
//
m_cSinks--;
((IUnknown *)dwCookie)->Release();
return S_OK;
#endif
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::EnumConnections
//=--------------------------------------------------------------------------=
// enumerates all current connections
//
// Paramters:
// IEnumConnections ** - [out] new enumerator object
//
// Output:
// HRESULT
//
// NOtes:
//
STDMETHODIMP COleControl::CConnectionPoint::EnumConnections
(
IEnumConnections **ppEnumOut
)
{
CONNECTDATA *rgConnectData = NULL;
int i;
if (m_cSinks) {
// allocate some memory big enough to hold all of the sinks.
rgConnectData = (CONNECTDATA *)lcCalloc(m_cSinks * sizeof(CONNECTDATA));
RETURN_ON_NULLALLOC(rgConnectData);
#ifdef _WIN64
for (i = 0; i < m_cSinks; i++) {
rgConnectData[i].pUnk = m_rgSinks64[i].pUnk;
rgConnectData[i].dwCookie = m_rgSinks64[i].dwCookie;
}
#else
// fill in the array
//
if (m_cSinks == 1) {
rgConnectData[0].pUnk = (IUnknown *)m_rgSinks;
rgConnectData[0].dwCookie = (DWORD)m_rgSinks;
} else {
// loop through all available sinks.
//
for (i = 0; i < m_cSinks; i++) {
rgConnectData[i].pUnk = m_rgSinks[i];
rgConnectData[i].dwCookie = (DWORD)m_rgSinks[i];
}
}
#endif
}
// create yon enumerator object.
//
*ppEnumOut = (IEnumConnections *)(IEnumGeneric *)new CStandardEnum(IID_IEnumConnections,
m_cSinks, sizeof(CONNECTDATA), rgConnectData, CopyAndAddRefObject);
if (!*ppEnumOut) {
lcFree(rgConnectData);
return E_OUTOFMEMORY;
}
return S_OK;
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::~CConnectionPoint
//=--------------------------------------------------------------------------=
// cleans up
//
// Notes:
//
COleControl::CConnectionPoint::~CConnectionPoint ()
{
int x;
#ifdef _WIN64
if (!m_cSinks)
return;
else {
for (x = 0; x < m_cSinks; x++)
QUICK_RELEASE(m_rgSinks64[x].pUnk);
lcFree(m_rgSinks64);
}
#else
// clean up some memory stuff
//
if (!m_cSinks)
return;
else if (m_cSinks == 1)
((IUnknown *)m_rgSinks)->Release();
else {
for (x = 0; x < m_cSinks; x++)
QUICK_RELEASE(m_rgSinks[x]);
lcFree(m_rgSinks);
}
#endif
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPiont::DoInvoke
//=--------------------------------------------------------------------------=
// fires an event to all listening on our event interface.
//
// Parameters:
// DISPID - [in] event to fire.
// DISPPARAMS - [in]
void COleControl::CConnectionPoint::DoInvoke(DISPID dispid, DISPPARAMS *pdispparams)
{
int iConnection;
// if we don't have any sinks, then there's nothing to do. we intentionally
// ignore errors here.
#ifdef _WIN64
if (m_cSinks == 0)
return;
else
for (iConnection = 0; iConnection < m_cSinks; iConnection++)
((IDispatch *)m_rgSinks64[iConnection].pUnk)->Invoke(dispid, IID_NULL, 0, DISPATCH_METHOD, pdispparams, NULL, NULL, NULL);
#else
if (m_cSinks == 0)
return;
else if (m_cSinks == 1)
((IDispatch *)m_rgSinks)->Invoke(dispid, IID_NULL, 0, DISPATCH_METHOD, pdispparams, NULL, NULL, NULL);
else
for (iConnection = 0; iConnection < m_cSinks; iConnection++)
((IDispatch *)m_rgSinks[iConnection])->Invoke(dispid, IID_NULL, 0, DISPATCH_METHOD, pdispparams, NULL, NULL, NULL);
#endif
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::DoOnChanged
//=--------------------------------------------------------------------------=
// fires the OnChanged event for IPropertyNotifySink listeners.
//
// Parameters:
// DISPID - [in] dude that changed.
//
// Output:
// none
void COleControl::CConnectionPoint::DoOnChanged(DISPID dispid)
{
ASSERT_COMMENT(FALSE, "DoOnChanged called, restore the code");
#if 0
int iConnection;
// if we don't have any sinks, then there's nothing to do.
if (m_cSinks == 0)
return;
else if (m_cSinks == 1)
((IPropertyNotifySink *)m_rgSinks)->OnChanged(dispid);
else
for (iConnection = 0; iConnection < m_cSinks; iConnection++)
((IPropertyNotifySink *)m_rgSinks[iConnection])->OnChanged(dispid);
#endif
}
//=--------------------------------------------------------------------------=
// COleControl::CConnectionPoint::DoOnRequestEdit
//=--------------------------------------------------------------------------=
// fires the OnRequestEdit for IPropertyNotifySinkListeners
//
// Parameters:
// DISPID - [in] dispid user wants to change.
//
// Output:
// BOOL - false means you cant
BOOL COleControl::CConnectionPoint::DoOnRequestEdit(DISPID dispid)
{
HRESULT hr;
int iConnection;
#ifdef _WIN64
if (m_cSinks == 0)
hr = S_OK;
else {
for (iConnection = 0; iConnection < m_cSinks; iConnection++) {
hr = ((IPropertyNotifySink *)m_rgSinks64[iConnection].pUnk)->OnRequestEdit(dispid);
if (hr != S_OK) break;
}
}
#else
// if we don't have any sinks, then there's nothing to do.
if (m_cSinks == 0)
hr = S_OK;
else if (m_cSinks == 1)
hr =((IPropertyNotifySink *)m_rgSinks)->OnRequestEdit(dispid);
else {
for (iConnection = 0; iConnection < m_cSinks; iConnection++) {
hr = ((IPropertyNotifySink *)m_rgSinks[iConnection])->OnRequestEdit(dispid);
if (hr != S_OK) break;
}
}
#endif
return (hr == S_OK) ? TRUE : FALSE;
}
//=--------------------------------------------------------------------------=
// COleControl::CreateInPlaceWindow
//=--------------------------------------------------------------------------=
// creates the window with which we will be working.
// yay.
//
// Parameters:
// int - [in] left
// int - [in] top
// BOOL - [in] can we skip redrawing?
//
// Output:
// HWND
//
// Notes:
// - DANGER! DANGER! this function is protected so that anybody can call it
// from their control. however, people should be extremely careful of when
// and why they do this. preferably, this function would only need to be
// called by an end-control writer in design mode to take care of some
// hosting/painting issues. otherwise, the framework should be left to
// call it when it wants.
HWND COleControl::CreateInPlaceWindow(int x, int y, BOOL fNoRedraw)
{
BOOL fVisible;
DWORD dwWindowStyle, dwExWindowStyle;
char szWindowTitle[128];
// if we've already got a window, do nothing.
if (m_hwnd)
return m_hwnd;
// get the user to register the class if it's not already
// been done. we have to critical section this since more than one thread
// can be trying to create this control
if (!CTLWNDCLASSREGISTERED(m_ObjectType)) {
// EnterCriticalSection(&g_CriticalSection);
if (!RegisterClassData()) {
// LeaveCriticalSection(&g_CriticalSection);
return NULL;
}
else
CTLWNDCLASSREGISTERED(m_ObjectType) = TRUE;
// LeaveCriticalSection(&g_CriticalSection);
}
dwWindowStyle = dwExWindowStyle = 0;
szWindowTitle[0] = '\0';
if (!BeforeCreateWindow(&dwWindowStyle, &dwExWindowStyle, szWindowTitle))
return NULL;
dwWindowStyle |= (WS_CHILD | WS_CLIPSIBLINGS);
// create window visible if parent hidden (common case)
// otherwise, create hidden, then shown. this is a little subtle, but
// it makes sense eventually.
ASSERT(m_hwndParent); // why would this ever occur? [rw]
if (!m_hwndParent)
m_hwndParent = GetParkingWindow();
fVisible = IsWindowVisible(m_hwndParent);
if (!fVisible)
dwWindowStyle |= WS_VISIBLE;
// we have to mutex the entire create window process since we need to use
// the s_pLastControlCreated to pass in the object pointer. nothing too
// serious
// EnterCriticalSection(&g_CriticalSection);
s_pLastControlCreated = this;
m_fCreatingWindow = TRUE;
// finally, go create the window, parenting it as appropriate.
m_hwnd = CreateWindowEx(dwExWindowStyle,
WNDCLASSNAMEOFCONTROL(m_ObjectType),
szWindowTitle,
dwWindowStyle,
x, y,
m_Size.cx, m_Size.cy,
m_hwndParent,
NULL, _Module.GetModuleInstance(), NULL);
// clean up some variables, and leave the critical section
m_fCreatingWindow = FALSE;
s_pLastControlCreated = NULL;
// LeaveCriticalSection(&g_CriticalSection);
if (IsValidWindow(m_hwnd)) {
// let the derived-control do something if they so desire
if (!AfterCreateWindow()) {
BeforeDestroyWindow();
SetWindowLong(m_hwnd, GWLP_USERDATA, 0xFFFFFFFF);
DestroyWindow(m_hwnd);
m_hwnd = NULL;
return m_hwnd;
}
// if we didn't create the window visible, show it now.
if (fVisible)
SetWindowPos(m_hwnd,
// m_hwndParent,
NULL, // RAID #30314
0, 0, 0, 0,
SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_SHOWWINDOW | (fNoRedraw) ? SWP_NOREDRAW : 0);
}
// finally, tell the host of this
if (m_pClientSite)
m_pClientSite->ShowObject();
return m_hwnd;
}
//=--------------------------------------------------------------------------=
// COleControl::SetInPlaceParent [helper]
//=--------------------------------------------------------------------------=
// sets up the parent window for our control.
//
// Parameters:
// HWND - [in] new parent window
void COleControl::SetInPlaceParent(HWND hwndParent)
{
ASSERT_COMMENT(!m_pInPlaceSiteWndless, "This routine should only get called for windowed OLE controls");
if (m_hwndParent == hwndParent)
return;
m_hwndParent = hwndParent;
if (m_hwnd)
SetParent(m_hwnd, hwndParent);
}
//=--------------------------------------------------------------------------=
// COleControl::ControlWindowProc
//=--------------------------------------------------------------------------=
// default window proc for an OLE Control. controls will have their own
// window proc called from this one, after some processing is done.
//
// Parameters:
// - see win32sdk docs.
//
// Notes:
//
LRESULT CALLBACK COleControl::ControlWindowProc(HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam)
{
COleControl *pCtl = ControlFromHwnd(hwnd);
LRESULT lResult;
// if the value isn't a positive value, then it's in some special
// state [creation or destruction] this is safe because under win32,
// the upper 2GB of an address space aren't available.
if (!pCtl) {
pCtl = s_pLastControlCreated;
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR) pCtl);
pCtl->m_hwnd = hwnd;
}
// 17-Sep-1997 [ralphw] Changed to 0xFFFFFFFF to avoid 32-bit dependencies
else if ((DWORD_PTR) pCtl == (DWORD_PTR) 0xFFFFFFFF) {
return DefWindowProc(hwnd, msg, wParam, lParam);
}
// message preprocessing
#if 0
if (pCtl->m_pSimpleFrameSite) {
hr = pCtl->m_pSimpleFrameSite->PreMessageFilter(hwnd, msg, wParam, lParam, &lResult, &dwCookie);
if (hr == S_FALSE)
return lResult;
}
#endif
// for certain messages, do not call the user window proc. instead,
// we have something else we'd like to do.
switch (msg) {
case WM_MOUSEACTIVATE:
{
pCtl->InPlaceActivate(OLEIVERB_UIACTIVATE);
break;
}
case WM_PAINT:
{
// call the user's OnDraw routine.
PAINTSTRUCT ps;
RECT rc;
HDC hdc;
// if we're given an HDC, then use it
// REVIEW: 17-Sep-1997 [ralphw] who's handing us a dc in wParam?
if (!wParam)
hdc = BeginPaint(hwnd, &ps);
else
hdc = (HDC)wParam;
GetClientRect(hwnd, &rc);
pCtl->OnDraw(DVASPECT_CONTENT, hdc, (RECTL *)&rc, NULL, NULL, TRUE);
if (!wParam)
EndPaint(hwnd, &ps);
}
break;
default:
// call the derived-control's window proc
lResult = pCtl->WindowProc(msg, wParam, lParam);
break;
}
// message postprocessing
switch (msg) {
case WM_NCDESTROY:
// after this point, the window doesn't exist any more
pCtl->m_hwnd = NULL;
break;
// REVIEW: 14-Oct-1997 [ralphw] This message never arrives
case WM_SETFOCUS:
case WM_KILLFOCUS:
// give the control site focus notification
if (pCtl->m_fInPlaceActive && pCtl->m_pControlSite) {
DBWIN("Focus change");
pCtl->m_pControlSite->OnFocus(msg == WM_SETFOCUS);
}
break;
case WM_SIZE:
// a change in size is a change in view
if (!pCtl->m_fCreatingWindow)
pCtl->ViewChanged();
break;
}
// lastly, simple frame postmessage processing
#if 0
if (pCtl->m_pSimpleFrameSite)
pCtl->m_pSimpleFrameSite->PostMessageFilter(hwnd, msg, wParam, lParam, &lResult, dwCookie);
#endif
return lResult;
}
//=--------------------------------------------------------------------------=
// COleControl::SetFocus
//=--------------------------------------------------------------------------=
// we have to override this routine to get UI Activation correct.
//
// Parameters:
// BOOL - [in] true means take, false release
//
// Output:
// BOOL
//
// Notes:
// - CONSIDER: this is pretty messy, and it's still not entirely clear
// what the ole control/focus story is.
// REVIEW: 14-Oct-1997 [ralphw] Doesn't look like it is ever called
BOOL COleControl::SetFocus(BOOL fGrab)
{
DBWIN("COleControl::SetFocus");
HRESULT hr;
HWND hwnd;
// first thing to do is check out UI Activation state, and then set
// focus [either with windows api, or via the host for windowless
// controls]
if (m_pInPlaceSiteWndless) {
if (!m_fUIActive && fGrab)
if (FAILED(InPlaceActivate(OLEIVERB_UIACTIVATE))) return FALSE;
hr = m_pInPlaceSiteWndless->SetFocus(fGrab);
return (hr == S_OK) ? TRUE : FALSE;
}
else {
// we've got a window.
if (m_fInPlaceActive) {
hwnd = (fGrab) ? m_hwnd : m_hwndParent;
if (!m_fUIActive && fGrab)
return SUCCEEDED(InPlaceActivate(OLEIVERB_UIACTIVATE));
else
return (::SetFocus(hwnd) == hwnd);
} else
return FALSE;
}
// dead code
}
#if 0
//=--------------------------------------------------------------------------=
// COleControl::ReflectWindowProc
//=--------------------------------------------------------------------------=
// reflects window messages on to the child window.
//
// Parameters and Output:
// - see win32 sdk docs
// REVIEW: 14-Oct-1997 [ralphw] Doesn't seem to ever be called
LRESULT CALLBACK COleControl::ReflectWindowProc(HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam)
{
COleControl *pCtl;
switch (msg) {
case WM_COMMAND:
case WM_NOTIFY:
case WM_CTLCOLORBTN:
case WM_CTLCOLORDLG:
case WM_CTLCOLOREDIT:
case WM_CTLCOLORLISTBOX:
case WM_CTLCOLORMSGBOX:
case WM_CTLCOLORSCROLLBAR:
case WM_CTLCOLORSTATIC:
case WM_DRAWITEM:
case WM_MEASUREITEM:
case WM_DELETEITEM:
case WM_VKEYTOITEM:
case WM_CHARTOITEM:
case WM_COMPAREITEM:
case WM_HSCROLL:
case WM_VSCROLL:
case WM_PARENTNOTIFY:
case WM_SETFOCUS:
case WM_SIZE:
pCtl = (COleControl *) GetWindowLong(hwnd, GWLP_USERDATA);
if (pCtl)
return SendMessage(pCtl->m_hwnd, msg, wParam, lParam);
break;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
#endif
//=--------------------------------------------------------------------------=
// COleControl::GetAmbientProperty [callable]
//=--------------------------------------------------------------------------=
// returns the value of an ambient property
//
// Parameters:
// DISPID - [in] property to get
// VARTYPE - [in] type of desired data
// void * - [out] where to put the data
//
// Output:
// BOOL - FALSE means didn't work.
BOOL COleControl::GetAmbientProperty(DISPID dispid, VARTYPE vt, void *pData)
{
DISPPARAMS dispparams;
VARIANT v, v2;
HRESULT hr;
v.vt = VT_EMPTY;
v.lVal = 0;
v2.vt = VT_EMPTY;
v2.lVal = 0;
// get a pointer to the source of ambient properties.
//
if (!m_pDispAmbient) {
if (m_pClientSite)
m_pClientSite->QueryInterface(IID_IDispatch, (void **)&m_pDispAmbient);
if (!m_pDispAmbient)
return FALSE;
}
// now go and get the property into a variant.
memset(&dispparams, 0, sizeof(DISPPARAMS));
hr = m_pDispAmbient->Invoke(dispid, IID_NULL, 0, DISPATCH_PROPERTYGET, &dispparams,
&v, NULL, NULL);
if (FAILED(hr))
return FALSE;
// we've got the variant, so now go an coerce it to the type that the user
// wants. if the types are the same, then this will copy the stuff to
// do appropriate ref counting ...
//
hr = VariantChangeType(&v2, &v, 0, vt);
if (FAILED(hr)) {
VariantClear(&v);
return FALSE;
}
// copy the data to where the user wants it
CopyMemory(pData, &(v2.lVal), g_rgcbDataTypeSize[vt]);
VariantClear(&v);
return TRUE;
}
//=--------------------------------------------------------------------------=
// COleControl::GetAmbientFont [callable]
//=--------------------------------------------------------------------------=
// gets the current font for the user.
//
// Parameters:
// IFont ** - [out] where to put the font.
//
// Output:
// BOOL - FALSE means couldn't get it.
BOOL COleControl::GetAmbientFont(IFont **ppFont)
{
IDispatch *pFontDisp;
// we don't have to do much here except get the ambient property and QI
// it for the user.
*ppFont = NULL;
if (!GetAmbientProperty(DISPID_AMBIENT_FONT, VT_DISPATCH, &pFontDisp))
return FALSE;
pFontDisp->QueryInterface(IID_IFont, (void **)ppFont);
pFontDisp->Release();
return (*ppFont) ? TRUE : FALSE;
}
//=--------------------------------------------------------------------------=
// COleControl::DesignMode
//=--------------------------------------------------------------------------=
// returns TRUE if we're in Design mode.
//
// Output:
// BOOL - true is design mode, false is run mode
//
// Notes:
//
BOOL COleControl::DesignMode(void)
{
// BUGBUG: if we never call this, then remove it
VARIANT_BOOL f;
// if we don't already know our run mode, go and get it. we'll assume
// it's true unless told otherwise [or if the operation fails ...]
if (!m_fModeFlagValid) {
f = TRUE;
m_fModeFlagValid = TRUE;
GetAmbientProperty(DISPID_AMBIENT_USERMODE, VT_BOOL, &f);
m_fRunMode = f;
}
return !m_fRunMode;
}
//=--------------------------------------------------------------------------=
// COleControl::FireEvent
//=--------------------------------------------------------------------------=
// fires an event. handles arbitrary number of arguments.
//
// Parameters:
// EVENTINFO * - [in] struct that describes the event.
// ... - arguments to the event
//
// Output:
// none
//
// Notes:
// - use stdarg's va_* macros.
void __cdecl COleControl::FireEvent(EVENTINFO *pEventInfo, ...)
{
va_list valist;
DISPPARAMS dispparams;
VARIANT rgvParameters[MAX_ARGS];
VARIANT *pv;
VARTYPE vt;
int iParameter;
int cbSize;
ASSERT_COMMENT(pEventInfo->cParameters <= MAX_ARGS, "Doesn't support more than MAX_ARGS params.");
va_start(valist, pEventInfo);
// copy the Parameters into the rgvParameters array. make sure we reverse
// them for automation
//
pv = &(rgvParameters[pEventInfo->cParameters - 1]);
for (iParameter = 0; iParameter < pEventInfo->cParameters; iParameter++) {
vt = pEventInfo->rgTypes[iParameter];
// if it's a by value variant, then just copy the whole thing
if (vt == VT_VARIANT)
*pv = va_arg(valist, VARIANT);
else {
// copy the vt and the data value.
pv->vt = vt;
if (vt & VT_BYREF)
cbSize = sizeof(void *);
else
cbSize = g_rgcbDataTypeSize[vt];
// small optimization -- we can copy 2/4 bytes over quite
// quickly.
if (cbSize == sizeof(short))
V_I2(pv) = va_arg(valist, short);
else if (cbSize == 4)
V_I4(pv) = va_arg(valist, long);
else {
// copy over 8 bytes
ASSERT_COMMENT(cbSize == 8, "don't recognize the type!!");
V_CY(pv) = va_arg(valist, CURRENCY);
}
}
pv--;
}
// fire the event
dispparams.rgvarg = rgvParameters;
dispparams.cArgs = pEventInfo->cParameters;
dispparams.rgdispidNamedArgs = NULL;
dispparams.cNamedArgs = 0;
m_cpEvents.DoInvoke(pEventInfo->dispid, &dispparams);
va_end(valist);
}
#if 0
//=--------------------------------------------------------------------------=
// COleControl::AfterCreateWindow [overridable]
//=--------------------------------------------------------------------------=
//
// Output:
// BOOL - false means fatal error, can't continue
BOOL COleControl::AfterCreateWindow(void)
{
return TRUE;
}
#endif
//=--------------------------------------------------------------------------=
// COleControl::InvalidateControl [callable]
//=--------------------------------------------------------------------------=
void COleControl::InvalidateControl(LPCRECT lpRect)
{
if (m_fInPlaceActive)
InvalidateRect(m_hwnd, lpRect, TRUE);
else
ViewChanged();
}
//=--------------------------------------------------------------------------=
// COleControl::SetControlSize [callable]
//=--------------------------------------------------------------------------=
// sets the control size. they'll give us the size in pixels. we've got to
// convert them back to HIMETRIC before passing them on!
//
// Parameters:
// SIZEL * - [in] new size
//
// Output:
// BOOL
//
// Notes:
//
BOOL COleControl::SetControlSize(SIZEL *pSize)
{
HRESULT hr;
SIZEL slHiMetric;
PixelToHiMetric(pSize, &slHiMetric);
hr = SetExtent(DVASPECT_CONTENT, &slHiMetric);
return (FAILED(hr)) ? FALSE : TRUE;
}
//=--------------------------------------------------------------------------=
// COleControl::RecreateControlWindow [callable]
//=--------------------------------------------------------------------------=
// called by a [subclassed, typically] control to recreate it's control
// window.
//
// Parameters:
// none
//
// Output:
// HRESULT
//
// Notes:
// - NOTE: USE ME EXTREMELY SPARINGLY! THIS IS AN EXTREMELY EXPENSIVE
// OPERATION!
//
#if 0
HRESULT COleControl::RecreateControlWindow(void)
{
HRESULT hr;
HWND hwndPrev;
DBWIN("RecreateControlWindow called -- it probably shouldn't be.");
// we need to correctly preserve the control's position within the
// z-order here.
if (m_hwnd)
hwndPrev = ::GetWindow(m_hwnd, GW_HWNDPREV);
// if we're in place active, then we have to deactivate, and reactivate
// ourselves with the new window ...
if (m_fInPlaceActive) {
hr = InPlaceDeactivate();
RETURN_ON_FAILURE(hr);
hr = InPlaceActivate((m_fUIActive) ? OLEIVERB_UIACTIVATE : OLEIVERB_INPLACEACTIVATE);
RETURN_ON_FAILURE(hr);
} else if (m_hwnd) {
DestroyWindow(m_hwnd);
m_hwnd = NULL;
CreateInPlaceWindow(0, 0, FALSE);
}
// restore z-order position
if (m_hwnd)
SetWindowPos(m_hwnd, hwndPrev, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
return m_hwnd ? S_OK : E_FAIL;
}
#endif
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