ISMSI_HANDLE

InstallShield 2020 » InstallScript Language Reference

This system variable is set to the handle of the currently running .msi database, and can be used in event-handler functions as an argument to Windows Installer API functions that require a handle to the currently running database.

For example, to retrieve the value of the USERNAME property in the OnBegin event handler, you can use code similar to the following:

function OnBegin( )

    STRING svUsername[256];

    NUMBER nBuffer;

begin

    nBuffer = 256;

    MsiGetProperty(ISMSI_HANDLE, "USERNAME", svUsername, nBuffer);

    MessageBox("USERNAME = " + svUsername, INFORMATION);

end;

Project:ISMSI_HANDLE is not supported in Basic MSI projects, and is not supported in InstallScript custom actions.