How can I obtain filename of own MSI/EXE installer file?

Question

I need to get a filename of the own installation package within an InstallScript function. How can I do that?

Answer 1

SETUPEXEDIR and SETUPEXENAME are MSI properties. You can obtain their values through the MsiGetProperty function. If you are not using an MSI then you can use the PACKAGE_LOCATION system variable, as in

ParsePath(svSetupExeFileName, PACKAGE_LOCATION, FILENAME);

Answer 2

I have found a way to get the filename:

function ShowInstallerFilename(hMSI)
    NUMBER maxPath;
    STRING originalDatabase;
begin
    maxPath = MAX_PATH;
    if(MsiGetProperty(hMSI, "OriginalDatabase", originalDatabase, maxPath) == ERROR_SUCCESS) then
        SprintfBox(INFORMATION, "Deferred Execution", "Original database is %s", originalDatabase);
    endif;

    MessageBox("Done", INFORMATION);
end;