Youmight want to look at src\ext\ca\wixca\dll\CloseApps.cpp in the Wix tools
source for an example of using WcaProcessMessage.
HRESULT hr = S_OK;
UINT er = ERROR_SUCCESS;
PMSIHANDLE hRecMessage = NULL;
DWORD *prgProcessIds = NULL;
DWORD cProcessIds = 0;
hRecMessage = ::MsiCreateRecord(1);
ExitOnNull(hRecMessage, hr, E_OUTOFMEMORY, "Failed to create record for
prompt.");
er = ::MsiRecordSetStringW(hRecMessage, 0, wzPrompt);
ExitOnWin32Error(er, hr, "Failed to set prompt record field string");
do
{
hr = ProcFindAllIdsFromExeName(wzApplication, &prgProcessIds,
&cProcessIds);
if (SUCCEEDED(hr) && 0 < cProcessIds)
{
er =
WcaProcessMessage(static_cast<INSTALLMESSAGE>(INSTALLMESSAGE_WARNING |
MB_ABORTRETRYIGNORE | MB_DEFBUTTON3 | MB_ICONWARNING), hRecMessage);
if (IDABORT == er)
{
hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
}
else if (IDRETRY == er)
{
hr = S_FALSE;
}
else if (IDIGNORE == er)
{
hr = S_OK;
}
else
{
ExitOnWin32Error(er, hr, "Unexpected return value from
prompt to continue.");
}
}
ReleaseNullMem(prgProcessIds);
cProcessIds = 0;
} while (S_FALSE == hr);
LExit:
ReleaseMem(prgProcessIds);
return hr;
}
--
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