Re: [WiX-users] Custom Action ALWAYS with admin rights

[David C. <dc...@ag...>]

Is the CA immediate or deferred? A quick test (printf("%d\n", IsUserAnAdmin());) on my Win7 system shows IsUserAnAdmin (I am) returns false in a normal cmd shell. But if I elevate, then it's true. (This implies your CA is immediate).


Dave



________________________________
 From: Lukas Haase <luk...@gm...>
To: wix...@li... 
Sent: Monday, June 24, 2013 11:17 AM
Subject: [WiX-users] Custom Action ALWAYS with admin rights
 

Hi,

I have a custom action in a DLL. If I check admin rights in the DLL with
IsUserAnAdmin it returns FALSE!

The wxs file makes sure that installation can only run with admin privs:

<Condition Message="This installation requires admin privileges">
  Privileged
</Condition>

The custom action is included via:

<Binary Id='UpdateInstall' SourceFile='UpdateInstall.dll' />
<InstallExecuteSequence>
  <Custom Action='UpdateInstall' After='InstallFinalize'>NOT
Installed</Custom>
</InstallExecuteSequence>

The UpdateInstall.dll exports UpdateInstall just as:

[...]
extern "C" UINT __stdcall UpdateInstall(MSIHANDLE hInstall)
{
  if(IsUserAnAdmin())
    MsiMessageBox(hInstall, "admin privs", 0);
  else
    MsiMessageBox(hInstall, "NO admin privs!!", 0);
}

Thanks,
Luke