asked on

Any sample on how to change the DSDISPLAYSPECOPTIONS for ext prop page

The CFSTR_DS_DISPLAY_SPEC_OPTIONS clipboard format provides an HGLOBAL that contains a DSDISPLAYSPECOPTIONS structure. The DSDISPLAYSPECOPTIONS contains configuration data for use by the extension.

I think I need to change the the user, password, server path in this structure for all the adminPropertyPages in the display specifier. Are there any sample code on how I can do update this?
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Thanks.

ASKER CERTIFIED SOLUTION

jkr

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lapucca

ASKER

Here is how they get the values, but I need code to "set" the values, Thanks.

HRESULT CPropSheetHost::_GetDSDispSpecOption(FORMATETC *pFormatEtc,
STGMEDIUM *pStgMedium)
{
if((m_cfDSDispSpecOptions != pFormatEtc->cfFormat) ||
!(pFormatEtc->tymed & TYMED_HGLOBAL))
{
return DV_E_FORMATETC;
}

HRESULT hr = E_OUTOFMEMORY;
LPWSTR pwszPrefix = m_pwszPrefix;
DWORD dwPrefixOffset;

// Size of the DSDISPLAYSPECOPTIONS structure.
DWORD dwBytes = sizeof(DSDISPLAYSPECOPTIONS);

// Store the offset to the prefix.
dwPrefixOffset = dwBytes;

// Length of the prefix Unicode string, including the null terminator.
dwBytes += (lstrlenW(pwszPrefix) + 1) * sizeof(WCHAR);

pStgMedium->pUnkForRelease = NULL;
pStgMedium->tymed = TYMED_HGLOBAL;
pStgMedium->hGlobal = GlobalAlloc(GPTR, dwBytes);
if(pStgMedium->hGlobal)
{
DSDISPLAYSPECOPTIONS *pDispSpecOptions = (DSDISPLAYSPECOPTIONS*)GlobalLock(pStgMedium->hGlobal);
if(pDispSpecOptions)
{
LPWSTR pwszTemp;

pDispSpecOptions->dwSize = sizeof(DSDISPLAYSPECOPTIONS);
pDispSpecOptions->dwFlags = 0;
pDispSpecOptions->offsetAttribPrefix = dwPrefixOffset;
pDispSpecOptions->offsetUserName = 0;
pDispSpecOptions->offsetPassword = 0;
pDispSpecOptions->offsetServer = 0;
pDispSpecOptions->offsetServerConfigPath = 0;

// Copy the prefix string.
pwszTemp = (LPWSTR)((LPBYTE)pDispSpecOptions + dwPrefixOffset);
lstrcpyW(pwszTemp, pwszPrefix);

GlobalUnlock(pStgMedium->hGlobal);

hr = S_OK;
}
}

return hr;
}

lapucca

ASKER

Ok, I revser it and here it is. I think it's correct way to set values

if(pStgMedium->hGlobal)
{
DSDISPLAYSPECOPTIONS *pDispSpecOptions = (DSDISPLAYSPECOPTIONS*)GlobalLock(pStgMedium->hGlobal);
if(pDispSpecOptions)
{
//LPWSTR pwszTemp;

pDispSpecOptions->dwFlags = DSDSOF_HASUSERANDSERVERINFO;
                  wcscpy((LPWSTR)((LPBYTE)pDispSpecOptions + pDispSpecOptions->offsetAttribPrefix), pwszPrefix);
                  wcscpy((LPWSTR)((LPBYTE)pDispSpecOptions + pDispSpecOptions->offsetUserName), m_userID);
                  wcscpy((LPWSTR)((LPBYTE)pDispSpecOptions + pDispSpecOptions->offsetPassword), m_password);
                  wcscpy((LPWSTR)((LPBYTE)pDispSpecOptions + pDispSpecOptions->offsetServer), m_serverName);
                  wcscpy((LPWSTR)((LPBYTE)pDispSpecOptions + pDispSpecOptions->offsetServerConfigPath), m_adPath);

// Copy the prefix string.
//pwszTemp = (LPWSTR)((LPBYTE)pDispSpecOptions + dwPrefixOffset);
//lstrcpyW(pwszTemp, pwszPrefix);

GlobalUnlock(pStgMedium->hGlobal);

hr = S_OK;
}

jkr

If you don't get any errors, it should work. Have you tried running it?

lapucca

ASKER

Yes, and it compiles OK. Thank you. I'm posting another related question. I would appreciate it if you can take a look too. Thanks.

jkr

Just a caveat - after thinking about thar whole thing, you might run into trouble seeting these values successfully if they are larger than teh previous ones...