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windows-server-2003/admin/activec/conui/ocxview.cpp

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/*--------------------------------------------------------------------------*
*
* Microsoft Windows
* Copyright (C) Microsoft Corporation, 1992 - 1999
*
* File: ocxview.cpp
*
* Contents: Implementation file for COCXHostView
*
* History: 12-Dec-97 JeffRo Created
*
* This class is required to host OCX controls to fix focus problems.
* The MDI child frame window keeps track of its currently active view.
* When we're hosting OCX controls without this view and the OCX get the
* focus, the MDI child frame thinks the previously active view, usually
* the scope tree, is still the active view. So if the user Alt-Tabs
* away from MMC and back, for instance, the scope tree will get the focus
* even though the OCX had the focus before.
*
* We need this view to represent the OCX, which isn't a view, to the MDI
* child frame.
*
*--------------------------------------------------------------------------*/
#include "stdafx.h"
#include "amc.h"
#include "ocxview.h"
#include "amcview.h"
#ifdef DBG
CTraceTag tagOCXActivation (_T("OCX"), _T("Activation"));
CTraceTag tagOCXTranslateAccel (_T("OCX"), _T("TranslateAccelerator"));
#endif
/*+-------------------------------------------------------------------------*
* class COCXCtrlWrapper
*
*
* PURPOSE: Maintains a pointer to a CMMCAxWindow as well as to the OCX in
* the window.
*
*+-------------------------------------------------------------------------*/
class COCXCtrlWrapper : public CComObjectRoot, public IUnknown
{
typedef COCXCtrlWrapper ThisClass;
public:
COCXCtrlWrapper() : m_pOCXWindow(NULL)
{
}
~COCXCtrlWrapper()
{
if(m_pOCXWindow && m_pOCXWindow->IsWindow())
m_pOCXWindow->DestroyWindow();
delete m_pOCXWindow;
}
BEGIN_COM_MAP(ThisClass)
COM_INTERFACE_ENTRY(IUnknown)
END_COM_MAP()
DECLARE_NOT_AGGREGATABLE(ThisClass);
SC ScInitialize(CMMCAxWindow *pWindowOCX, IUnknown *pUnkCtrl) // initialize with the window that hosts the control
{
DECLARE_SC(sc, TEXT("COCXCtrlWrapper::ScInitialize"));
sc = ScCheckPointers(pWindowOCX, pUnkCtrl);
if(sc)
return sc;
m_pOCXWindow = pWindowOCX;
m_spUnkCtrl = pUnkCtrl;
return sc;
}
SC ScGetControl(IUnknown **ppUnkCtrl)
{
DECLARE_SC(sc, TEXT("COCXCtrlWrapper::ScGetData"));
sc = ScCheckPointers(ppUnkCtrl);
if(sc)
return sc;
*ppUnkCtrl = m_spUnkCtrl;
if(*ppUnkCtrl)
(*ppUnkCtrl)->AddRef();
return sc;
}
CMMCAxWindow * GetAxWindow() {return m_pOCXWindow;}
private:
CMMCAxWindow * m_pOCXWindow; // handle to the window.
CComPtr<IUnknown> m_spUnkCtrl; // the IUnknown of the control
};
/////////////////////////////////////////////////////////////////////////////
// COCXHostView
IMPLEMENT_DYNCREATE(COCXHostView, CView)
COCXHostView::COCXHostView() : m_pAMCView(NULL)
{
}
COCXHostView::~COCXHostView()
{
m_pAMCView = NULL;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::PreCreateWindow
*
* PURPOSE: Adds the WS_CLIPCHILDREN bit. This prevents the host window
* from overwriting the OCX.
*
* PARAMETERS:
* CREATESTRUCT& cs :
*
* RETURNS:
* BOOL
*
*+-------------------------------------------------------------------------*/
BOOL
COCXHostView::PreCreateWindow(CREATESTRUCT& cs)
{
cs.style |= WS_CLIPCHILDREN;
// give base class a chance to do own job
BOOL bOK = (CView::PreCreateWindow(cs));
// register view class
LPCTSTR pszViewClassName = g_szOCXViewWndClassName;
// try to register window class which does not cause the repaint
// on resizing (do it only once)
static bool bClassRegistered = false;
if ( !bClassRegistered )
{
WNDCLASS wc;
if (::GetClassInfo(AfxGetInstanceHandle(), cs.lpszClass, &wc))
{
// Clear the H and V REDRAW flags
wc.style &= ~(CS_HREDRAW | CS_VREDRAW);
wc.lpszClassName = pszViewClassName;
// Register this new class;
bClassRegistered = AfxRegisterClass(&wc);
}
}
// change window class to one which does not cause the repaint
// on resizing if we successfully registered such
if ( bClassRegistered )
cs.lpszClass = pszViewClassName;
return bOK;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::GetAxWindow
*
* PURPOSE: Returns a pointer to the current AxWindow.
*
* RETURNS:
* CMMCAxWindow *
*
*+-------------------------------------------------------------------------*/
CMMCAxWindow *
COCXHostView::GetAxWindow()
{
COCXCtrlWrapper *pOCXCtrlWrapper = dynamic_cast<COCXCtrlWrapper *>(m_spUnkCtrlWrapper.GetInterfacePtr());
if(!pOCXCtrlWrapper)
return (NULL);
return pOCXCtrlWrapper->GetAxWindow();
}
CAMCView *
COCXHostView::GetAMCView()
{
return m_pAMCView;
}
BEGIN_MESSAGE_MAP(COCXHostView, CView)
//{{AFX_MSG_MAP(COCXHostView)
ON_WM_SIZE()
ON_WM_SETFOCUS()
ON_WM_MOUSEACTIVATE()
ON_WM_SETTINGCHANGE()
ON_WM_CREATE()
ON_WM_DESTROY()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// COCXHostView drawing
void COCXHostView::OnDraw(CDC* pDC)
{
// this view should always be totally obscured by the OCX it is hosting
}
/////////////////////////////////////////////////////////////////////////////
// COCXHostView diagnostics
#ifdef _DEBUG
void COCXHostView::AssertValid() const
{
CView::AssertValid();
}
void COCXHostView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// COCXHostView message handlers
void COCXHostView::OnSize(UINT nType, int cx, int cy)
{
ASSERT_VALID (this);
CView::OnSize(nType, cx, cy);
if (nType != SIZE_MINIMIZED)
{
if(GetAxWindow() != NULL)
GetAxWindow()->MoveWindow (0, 0, cx, cy, FALSE /*bRepaint*/);
}
}
void COCXHostView::OnSettingChange(UINT uFlags, LPCTSTR lpszSection)
{
SetAmbientFont (NULL);
CView::OnSettingChange(uFlags, lpszSection);
if(GetAxWindow() != NULL)
GetAxWindow()->SendMessage (WM_SETTINGCHANGE, uFlags, (LPARAM) lpszSection);
}
void COCXHostView::OnSetFocus(CWnd* pOldWnd)
{
DECLARE_SC(sc, TEXT("COCXHostView::OnSetFocus"));
ASSERT_VALID (this);
// delegate the focus to the control we're hosting, if we have one
if(GetAxWindow() != NULL)
GetAxWindow()->SetFocus();
// check if someone cared to take the focus.
// default handling else.
if (this == GetFocus())
{
CView::OnSetFocus (pOldWnd);
}
}
int COCXHostView::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message)
{
/*---------------------------------------------------------*/
/* this code came from CView::OnMouseActivate; we do it */
/* here to bypass sending WM_MOUSEACTIVATE on the the */
/* parent window, avoiding focus churn in the parent frame */
/*---------------------------------------------------------*/
CFrameWnd* pParentFrame = GetParentFrame();
if (pParentFrame != NULL)
{
// eat it if this will cause activation
ASSERT(pParentFrame == pDesktopWnd || pDesktopWnd->IsChild(pParentFrame));
// either re-activate the current view, or set this view to be active
CView* pView = pParentFrame->GetActiveView();
HWND hWndFocus = ::GetFocus();
if (pView == this &&
m_hWnd != hWndFocus && !::IsChild(m_hWnd, hWndFocus))
{
// re-activate this view
OnActivateView(TRUE, this, this);
}
else
{
// activate this view
pParentFrame->SetActiveView(this);
}
}
return (MA_ACTIVATE);
}
BOOL COCXHostView::OnCmdMsg( UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo )
{
// Do normal command routing
if (CView::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
return TRUE;
// if view didn't handle it, give parent view a chance
CWnd* pParentView = GetParent ();
if ((pParentView != NULL) &&
pParentView->IsKindOf (RUNTIME_CLASS (CAMCView)) &&
pParentView->OnCmdMsg (nID, nCode, pExtra, pHandlerInfo))
return (TRUE);
// not handled
return FALSE;
}
void COCXHostView::OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView)
{
DECLARE_SC(sc, TEXT("COCXHostView::OnActivateView"));
CView::OnActivateView(bActivate,pActivateView,pDeactiveView);
// If pActivateView and pDeactiveView are same then this app has lost
// or gained focus without changing the active view within the app.
// So do nothing.
if (pActivateView == pDeactiveView)
return;
if (bActivate)
{
sc = ScFireEvent(COCXHostActivationObserver::ScOnOCXHostActivated);
if (sc)
sc.TraceAndClear();
}
else
/*
* If this view's no longer active, then the in-place object should
* no longer be UI active. This is important for the WebBrowser control
* because if you move from one "Link to Web Address" node to another, or
* from one taskpad to another, it won't allow tabbing to links on the
* new hosted page if it's not deactivated and reactivated in the
* appropriate sequence.
*/
{
IOleInPlaceObjectPtr spOleIPObj = GetIUnknown();
/*
* app hack for SQL snapin. Do not UIDeactivate the DaVinci control.
* See bugs 175586, 175756, 193673 & 258109.
*/
CAMCView *pAMCView = GetAMCView();
sc = ScCheckPointers(pAMCView, E_UNEXPECTED);
if (sc)
return;
SViewData *pViewData = pAMCView->GetViewData();
sc = ScCheckPointers(pViewData, E_UNEXPECTED);
if (sc)
return;
// If DaVinci control do not UIDeactivate.
LPCOLESTR lpszOCXClsid = pViewData->GetOCX();
if ( (_wcsicmp(lpszOCXClsid, L"{464EE255-FDC7-11D2-9743-00105A994F8D}") == 0) ||
(_wcsicmp(lpszOCXClsid, L"{97240642-F896-11D0-B255-006097C68E81}") == 0) )
return;
/*
* app hack for SQL snapin ends here.
*/
if (spOleIPObj != NULL)
{
Trace (tagOCXActivation, _T("Deactivating in-place object"));
spOleIPObj->UIDeactivate();
}
else
Trace (tagOCXActivation, _T("No in-place object to deactivate"));
}
}
int COCXHostView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
// initialize the AxWin class just once.
static bool bIsAxWinInitialized = false;
if(!bIsAxWinInitialized)
{
AtlAxWinInit();
bIsAxWinInitialized = true;
}
// get a pointer to the AMCView.
m_pAMCView = dynamic_cast<CAMCView*>(GetParent());
return 0;
}
LPUNKNOWN COCXHostView::GetIUnknown(void)
{
DECLARE_SC(sc, TEXT("COCXHostView::GetIUnknown"));
COCXCtrlWrapper *pOCXCtrlWrapper = dynamic_cast<COCXCtrlWrapper *>((IUnknown *)m_spUnkCtrlWrapper);
if(!pOCXCtrlWrapper)
{
sc = E_UNEXPECTED;
return NULL;
}
IUnknownPtr spUnkCtrl;
sc = pOCXCtrlWrapper->ScGetControl(&spUnkCtrl);
if(sc)
return NULL;
return (LPUNKNOWN)spUnkCtrl;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::ScSetControl
*
* PURPOSE: Hosts the specified control in the OCX view. Delegates to one of
* the two other overloaded versions of this function.
*
* PARAMETERS:
* HNODE hNode : The node that owns the view.
* CResultViewType& rvt: The result view information
* INodeCallback * pNodeCallback :
*
* RETURNS:
* SC
*
*+-------------------------------------------------------------------------*/
SC
COCXHostView::ScSetControl(HNODE hNode, CResultViewType& rvt, INodeCallback *pNodeCallback)
{
DECLARE_SC(sc, TEXT("COCXHostView::ScSetControl"));
USES_CONVERSION;
// make sure that we're trying to set up the right type of view.
if(rvt.GetType() != MMC_VIEW_TYPE_OCX)
return E_UNEXPECTED;
// either BOTH rvt.IsPersistableViewDescriptionValid() and rvt.GetOCXUnknown() should be valid (the GetResultViewType2 case)
// or BOTH should be invalid and just GetOCX() should be valid.
if(rvt.IsPersistableViewDescriptionValid() && (rvt.GetOCXUnknown() != NULL) )
{
// the GetResultViewType2 case
sc = ScSetControl1(hNode, rvt.GetOCXUnknown(), rvt.GetOCXOptions(), pNodeCallback);
if(sc)
return sc;
}
else if(rvt.GetOCX() != NULL)
{
sc = ScSetControl2(hNode, rvt.GetOCX(), rvt.GetOCXOptions(), pNodeCallback);
if(sc)
return sc;
}
else
{
// should never happen.
return (sc = E_UNEXPECTED);
}
// must have a legal Ax Window at this point.
sc = ScCheckPointers(GetAxWindow());
if(sc)
return sc;
// the OCX should fill the entirety of the OCX host view
CRect rectHost;
GetClientRect (rectHost);
GetAxWindow()->SetWindowPos(HWND_TOP, rectHost.left, rectHost.top, rectHost.Width(), rectHost.Height(), SWP_NOACTIVATE | SWP_SHOWWINDOW);
return sc;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::ScSetControl1
*
* PURPOSE: Hosts the control specified by pUnkCtrl in the OCX view. Takes
* care of caching the control
*
* PARAMETERS:
* HNODE hNode :
* LPUNKNOWN pUnkCtrl :
* DWORD dwOCXOptions :
* INodeCallback * pNodeCallback :
*
* RETURNS:
* SC
*
*+-------------------------------------------------------------------------*/
SC
COCXHostView::ScSetControl1(HNODE hNode, LPUNKNOWN pUnkCtrl, DWORD dwOCXOptions, INodeCallback *pNodeCallback)
{
DECLARE_SC(sc, TEXT("COCXHostView::ScSetControl1"));
// validate parameters.
sc = ScCheckPointers((void *)hNode, pUnkCtrl, pNodeCallback);
if(sc)
return sc;
CComPtr<IUnknown> spUnkCtrl;
// 1. Hide existing window, if any.
sc = ScHideWindow();
if(sc)
return sc;
// 2. Get a cached window if one exists - NOTE that in this overload we do not look at RVTI_OCX_OPTIONS_CACHE_OCX at this point.
sc = pNodeCallback->GetControl(hNode, pUnkCtrl, &m_spUnkCtrlWrapper); // the overloaded form of GetControl
if (sc)
return sc;
// 3. if no cached window, create one.
if(m_spUnkCtrlWrapper == NULL) /*no cached window, create one*/
{
CMMCAxWindow * pWndAx = NULL;
sc = ScCreateAxWindow(pWndAx);
if(sc)
return sc;
CComPtr<IUnknown> spUnkContainer;
// attach the container to the AxWindow
sc = pWndAx->AttachControl(pUnkCtrl, &spUnkContainer);
if(sc)
return sc;
// create a wrapper for the control
CComObject<COCXCtrlWrapper> *pOCXCtrlWrapper = NULL;
sc = CComObject<COCXCtrlWrapper>::CreateInstance(&pOCXCtrlWrapper);
if(sc)
return sc;
spUnkCtrl = pUnkCtrl;
// initialize the wrapper.
// The pointer to the control and the CMMCAxWindow is now owned by the wrapper.
sc = pOCXCtrlWrapper->ScInitialize(pWndAx, spUnkCtrl);
if(sc)
return sc;
m_spUnkCtrlWrapper = pOCXCtrlWrapper; // does the addref.
// cache only if the snapin asked us to. NOTE that this logic is different from the other version of SetControl
if(dwOCXOptions & RVTI_OCX_OPTIONS_CACHE_OCX)
{
// This is cached by the static node and used for all nodes of the snapin.
sc = pNodeCallback->SetControl(hNode, pUnkCtrl, m_spUnkCtrlWrapper); // this call passes the wrapper
if(sc)
return sc;
}
// Do not send MMCN_INITOCX, the snapin created this control it should have initialized it.
}
else
{
// The next call sets m_spUnkCtrlWrapper, which is used to get a pointer to the Ax window.
COCXCtrlWrapper *pOCXCtrlWrapper = dynamic_cast<COCXCtrlWrapper *>((IUnknown *)m_spUnkCtrlWrapper);
if(!pOCXCtrlWrapper)
return (sc = E_UNEXPECTED); // this should never happen.
sc = pOCXCtrlWrapper->ScGetControl(&spUnkCtrl);
if(sc)
return sc;
sc = ScCheckPointers(GetAxWindow(), (LPUNKNOWN)spUnkCtrl);
if(sc)
return sc;
// un-hide the window.
GetAxWindow()->ShowWindow(SW_SHOWNORMAL);
}
return sc;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::ScSetControl2
*
* PURPOSE: Hosts the specified control in the OCX view. This is the
* OCX returned by GetResultViewType. Also takes care of
* caching the control if needed and sending the MMCN_INITOCX
* notification to snap-ins. The caching is done by hiding the
* OCX window and passing nodemgr a COM object that holds a pointer
* to the window as well as the control. The nodemgr side determines
* whether or not to cache the control. If the control is not
* cached, nodemgr merely releases the object passed to it.
*
* PARAMETERS:
* HNODE hNode :
* LPCWSTR szOCXClsid :
* DWORD dwOCXOptions :
* INodeCallback * pNodeCallback :
*
* RETURNS:
* SC
*
*+-------------------------------------------------------------------------*/
SC
COCXHostView::ScSetControl2(HNODE hNode, LPCWSTR szOCXClsid, DWORD dwOCXOptions, INodeCallback *pNodeCallback)
{
DECLARE_SC(sc, TEXT("COCXHostView::ScSetControl2"));
// validate parameters.
sc = ScCheckPointers((void *)hNode, szOCXClsid, pNodeCallback);
if(sc)
return sc;
// create the OCX if needed
CLSID clsid;
sc = CLSIDFromString (const_cast<LPWSTR>(szOCXClsid), &clsid);
if(sc)
return sc;
CComPtr<IUnknown> spUnkCtrl;
sc = ScHideWindow();
if(sc)
return sc;
// check whether there is a cached control for this node.
if (dwOCXOptions & RVTI_OCX_OPTIONS_CACHE_OCX)
{
sc = pNodeCallback->GetControl(hNode, clsid, &m_spUnkCtrlWrapper);
if (sc)
return sc;
}
// nope, create a control and set this control for the node.
if (m_spUnkCtrlWrapper == NULL)
{
CMMCAxWindow * pWndAx = NULL;
sc = ScCreateAxWindow(pWndAx);
if(sc)
return sc;
sc = pWndAx->CreateControlEx(szOCXClsid, NULL /*pStream*/,
NULL /*ppUnkContainer*/, &spUnkCtrl);
if(sc)
return sc;
// spUnkCtrl should be valid at this point.
sc = ScCheckPointers(spUnkCtrl);
if(sc)
return sc;
CComObject<COCXCtrlWrapper> *pOCXCtrlWrapper = NULL;
sc = CComObject<COCXCtrlWrapper>::CreateInstance(&pOCXCtrlWrapper);
if(sc)
return sc;
sc = ScCheckPointers(pOCXCtrlWrapper);
if(sc)
return sc;
// initialize the wrapper.
// The pointer to the control and the CMMCAxWindow is now owned by the wrapper.
sc = pOCXCtrlWrapper->ScInitialize(pWndAx, spUnkCtrl);
if(sc)
return sc;
m_spUnkCtrlWrapper = pOCXCtrlWrapper; // does the addref.
// This is cached by the static node and used for all nodes of the snapin.
if (dwOCXOptions & RVTI_OCX_OPTIONS_CACHE_OCX)
{
sc = pNodeCallback->SetControl(hNode, clsid, m_spUnkCtrlWrapper); // this call passes the wrapper
if(sc)
return sc;
}
// send the MMCN_INITOCX notification.
sc = pNodeCallback->InitOCX(hNode, spUnkCtrl); // this passes the actual IUnknown of the control.
if(sc)
return sc;
}
else
{
// The next call sets m_spUnkCtrlWrapper, which is used to get a pointer to the Ax window.
COCXCtrlWrapper *pOCXCtrlWrapper = dynamic_cast<COCXCtrlWrapper *>((IUnknown *)m_spUnkCtrlWrapper);
if(!pOCXCtrlWrapper)
return (sc = E_UNEXPECTED); // this should never happen.
sc = pOCXCtrlWrapper->ScGetControl(&spUnkCtrl);
if(sc)
return sc;
sc = ScCheckPointers(GetAxWindow(), (LPUNKNOWN)spUnkCtrl);
if(sc)
return sc;
// un-hide the window.
GetAxWindow()->ShowWindow(SW_SHOWNORMAL);
}
return sc;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::ScHideWindow
*
* PURPOSE: Hides the existing window, if any.
*
* RETURNS:
* SC
*
*+-------------------------------------------------------------------------*/
SC
COCXHostView::ScHideWindow()
{
DECLARE_SC(sc, TEXT("COCXCtrlWrapper::ScHideWindow"));
// if there is an existing window, hide it.
if(GetAxWindow())
{
GetAxWindow()->ShowWindow(SW_HIDE);
m_spUnkCtrlWrapper.Release(); // this deletes the unneeded window if the reference count is zero.
}
return sc;
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::ScCreateAxWindow
*
* PURPOSE: Creates a new Ax window
*
* PARAMETERS:
* PMMCAXWINDOW pWndAx :
*
* RETURNS:
* SC
*
*+-------------------------------------------------------------------------*/
SC
COCXHostView::ScCreateAxWindow(PMMCAXWINDOW &pWndAx)
{
DECLARE_SC(sc, TEXT("COCXHostView::ScCreateAxWindow"));
// create a new window
pWndAx = new CMMCAxWindow;
if(!pWndAx)
return (sc = E_OUTOFMEMORY);
// create the OCX host window
// BUG: 418921 always create the host window with (0,0,0,0) which is what used first time
// as client rect is not created.
// This fixes resize problem for some of the OCX (HP ManageX snapin).
HWND hwndAx = pWndAx->Create(m_hWnd, (RECT&)g_rectEmpty, _T(""), (WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS) );
if (hwndAx == NULL)
{
sc.FromLastError();
return (sc);
}
/*
* Bug 451981: By default, the ATL OCX host window supports hosting
* windowless controls. This differs from the MMC 1.2 implementation
* of the OCX host window (which used MFC), which did not. Some controls
* (e.g. Disk Defragmenter OCX) claim to support windowless instantiation
* but do not.
*
* For compatibility, we must only instantiate result pane OCX's as
* windowed controls.
*/
CComPtr<IAxWinAmbientDispatch> spHostDispatch;
sc = pWndAx->QueryHost(IID_IAxWinAmbientDispatch, (void**)&spHostDispatch);
if (sc)
sc.Clear(); // ignore this failure
else
{
spHostDispatch->put_AllowWindowlessActivation (VARIANT_FALSE); // disallow windowless activation
SetAmbientFont (spHostDispatch);
}
return sc;
}
void COCXHostView::OnDestroy()
{
CView::OnDestroy();
if(GetAxWindow())
GetAxWindow()->DestroyWindow();
}
/*+-------------------------------------------------------------------------*
* COCXHostView::SetAmbientFont
*
* This function sets the font that any OCX that uses the DISPID_AMBIENT_FONT
* ambient property will inherit.
*--------------------------------------------------------------------------*/
void COCXHostView::SetAmbientFont (IAxWinAmbientDispatch* pHostDispatch)
{
DECLARE_SC (sc, _T("COCXHostView::SetAmbientFont"));
CComPtr<IAxWinAmbientDispatch> spHostDispatch;
/*
* no host dispatch interface supplied? get it from the AxWindow
*/
if (pHostDispatch == NULL)
{
CMMCAxWindow* pWndAx = GetAxWindow();
if (pWndAx == NULL)
return;
sc = pWndAx->QueryHost(IID_IAxWinAmbientDispatch, (void**)&spHostDispatch);
if (sc)
return;
pHostDispatch = spHostDispatch;
sc = ScCheckPointers (pHostDispatch, E_UNEXPECTED);
if (sc)
return;
}
/*
* get the icon title font
*/
LOGFONT lf;
SystemParametersInfo (SPI_GETICONTITLELOGFONT, sizeof(lf), &lf, false);
/*
* get the desktop resolution
*/
CWindowDC dcDesktop (CWnd::GetDesktopWindow());
int ppi = dcDesktop.GetDeviceCaps (LOGPIXELSY);
long lfHeight = (lf.lfHeight >= 0) ? lf.lfHeight : -lf.lfHeight;
/*
* create an IFontDisp interface around the icon title font
*/
USES_CONVERSION;
FONTDESC fd;
fd.cbSizeofstruct = sizeof (fd);
fd.lpstrName = T2OLE (lf.lfFaceName);
fd.sWeight = (short) lf.lfWeight;
fd.sCharset = lf.lfCharSet;
fd.fItalic = lf.lfItalic;
fd.fUnderline = lf.lfUnderline;
fd.fStrikethrough = lf.lfStrikeOut;
fd.cySize.Lo = lfHeight * 720000 / ppi;
fd.cySize.Hi = 0;
CComPtr<IFontDisp> spFontDisp;
sc = OleCreateFontIndirect (&fd, IID_IFontDisp, (void**) &spFontDisp);
if (sc)
return;
/*
* set the Font property on the AxHostWindow
*/
pHostDispatch->put_Font (spFontDisp);
}
/*+-------------------------------------------------------------------------*
*
* COCXHostView::PreTranslateMessage
*
* PURPOSE: Sends accelerator messages to the OCX.
*
* PARAMETERS:
* MSG* pMsg :
*
* RETURNS:
* BOOL
*
*+-------------------------------------------------------------------------*/
BOOL
COCXHostView::PreTranslateMessage(MSG* pMsg)
{
DECLARE_SC(sc, TEXT("COCXHostView::PreTranslateMessage"));
if (pMsg->message >= WM_KEYFIRST && pMsg->message <= WM_KEYLAST)
{
IOleInPlaceActiveObjectPtr spOleIPAObj = GetIUnknown();
#ifdef DBG
TCHAR szTracePrefix[32];
sc = StringCchPrintf(szTracePrefix, countof(szTracePrefix), _T("msg=0x%04x, vkey=0x%04x:"), pMsg->message, pMsg->wParam);
if (sc)
sc.TraceAndClear(); // Ignore return;
#endif
if (spOleIPAObj != NULL)
{
bool fHandled = (spOleIPAObj->TranslateAccelerator(pMsg) == S_OK);
Trace (tagOCXTranslateAccel, _T("%s %s handled"), szTracePrefix, fHandled ? _T(" ") : _T("not"));
if (fHandled)
return TRUE;
}
else
Trace (tagOCXTranslateAccel, _T("%s not handled (no IOleInPlaceActiveObject*)"), szTracePrefix);
}
return BC::PreTranslateMessage(pMsg);
}