Hi Natalie,
I have the following function for extracting a release note out of my
MSI's binary table. Hopefully this is of some use to you. Once you've
got the file out, I expect executing it should be fairly simple, but let
me know if you're having issues with it.
void CMsiFile::ExtractOneReleaseNote(MSIHANDLE hMsi, const CString&
sTableId, const CString& sFileName)
{
CString sQuery;
sQuery.Format(L"SELECT Data FROM `Binary` WHERE `Name` = '%s'",
sTableId.GetString());
PMSIHANDLE hView;
UINT res = ::MsiDatabaseOpenView(hMsi, sQuery.GetString(), &hView);
if (ERROR_SUCCESS == res)
{
res = ::MsiViewExecute(hView, 0);
if (ERROR_SUCCESS == res)
{
PMSIHANDLE hRecord;
res = ::MsiViewFetch(hView, &hRecord);
if (ERROR_SUCCESS == res)
{
DWORD dwSizeNeeded = 0;
::MsiRecordReadStream(hRecord, 1, 0, &dwSizeNeeded);
if (dwSizeNeeded > 0)
{
std::vector<char> contents(dwSizeNeeded);
res = ::MsiRecordReadStream(hRecord, 1, &contents[0],
&dwSizeNeeded);
if (ERROR_SUCCESS == res)
{
HANDLE hFile = ::CreateFile(sFileName.GetString(),
GENERIC_WRITE,
0,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (INVALID_HANDLE_VALUE != hFile)
{
DWORD dwWritten;
const BOOL bWritten = ::WriteFile(hFile, &contents[0],
contents.size(), &dwWritten, NULL);
::CloseHandle(hFile);
if (!bWritten)
{
::DeleteFile(sFileName.GetString());
}
}
}
}
}
}
}
}
Rob
On 17/12/2012 15:34, Natalie Carr wrote:
> Hi does anyone have a full example of extracting a file from the binary
> table and executing it in C++? I cannot seem get it working at all.
>
>
>
> Kind Regards,
>
>
>
> Natalie Carr
>
>
>
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