When I change the code in question to be like the following, it gets the
path. (When I call the function as you did without and initial call with
the sczPath = NULL and cch = 0, then I never get the path, even if the
buffer was larger than needed. You second code post has other issues
because pcchBuf is defined as a DWORD array, etc.) But the following finds
the path to Word on my system.
DWORD dwFileAttributes = 0;
BOOL fValidateComponentExists = FALSE;
INSTALLSTATE installState = INSTALLSTATE_BROKEN;
LPWSTR sczPath = NULL;
DWORD cch = 0;
LPWSTR sczComponentIdx86 =
L"{9FE736B7-B1EE-410C-8D07-082891C3DAC8}";
installState = MsiLocateComponentW(sczComponentIdx86, sczPath,
&cch);
cch++;
hr = StrAlloc(&sczPath, cch);
ExitOnFailure(hr, "Failed to allocate string for component
path.")
installState = MsiLocateComponentW(sczComponentIdx86, sczPath,
&cch);
if (INSTALLSTATE_LOCAL == installState) {
fValidateComponentExists = FileExistsEx(sczPath,
&dwFileAttributes);
}
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