Porting a plug-in from CS3 to CS4 - IScriptRunner woes

Question

Hi,
I'm currently porting an InDesign CS3 plug-in to CS4 and everything seems to compile allright. However, I have some problems getting my IScriptRunner to work. I am aware of some changes to the RunScript() method call, and have changed my code accordingly:
  do
    // Get a handle on the ExtendScript Manager
    InterfacePtr<IScriptManager> scriptManager(Utils<IScriptUtils>()->QueryScriptManager(kJavaScriptMgrBoss));
    ASSERT(scriptManager);
    if (!scriptManager) break;
    InterfacePtr<IScriptRunner> scriptRunner(scriptManager, UseDefaultIID());
    ASSERT(scriptRunner);
    if (!scriptRunner) break;
    RunScriptParams params(scriptRunner);
    params.SetInvokeDebugger(kFalse);
    params.SetShowErrorAlert(kTrue);
    scriptRunner->RunScript(script, params);
  while (false);
However, now I'm getting assert errors when starting up my plug-in, and the script is not executed (the line that seems to break is the ASSERT(scriptRunner).
I have read that the implementation of IScriptManager has changed and that IScriptRunner is no longer directly on IScriptManager, but rather on IScriptEngine (is it just me, or is this discussed rather vague in the porting guide?) and I haved tried using the IScriptManager::QueryDefaultEngine() method to get an IScriptEngine (and got one), but so far I have been unable to extract an IScriptRunner from there.
InterfacePtr<IScriptEngine> scriptEngine(scriptManager->QueryDefaultEngine());
ASSERT(scriptEngine);
if (!scriptEngine) break;
// Will not compile:
//   error C2664: 'InterfacePtr<IFace>::InterfacePtr(const IPMUnknown *,PMIID)' : cannot convert parameter 1 from 'InterfacePtr<IFace>' to 'const IPMUnknown *'
InterfacePtr<IScriptRunner> scriptRunner(scriptEngine, UseDefaultIID());
ASSERT(scriptRunner);
if (!scriptRunner) break;
Anyone who has an idea as to how to fix this?
Thanks!
Kind regards
Message was edited by: WouterDem - Fixed some typos in the code snippets.

Answer 1

Hi,
I have been able to get an instance of IScriptRunner through the method you've provided, which I then use to execute a script from a PMString:
IDFile libMyPlugin = IDFile();
... // Fill in the path to the ExtendScript library.
InterfacePtr<IScriptRunner> scriptRunner(Utils<IScriptUtils>()->QueryScriptRunner(libMyPlugin));
ASSERT(scriptRunner);
if (!scriptRunner) break;
PMString script("MyPluginLib.SomeExtendScriptFunction()");
RunScriptParams params(scriptRunner);
params.SetInvokeDebugger(kFalse);
params.SetShowErrorAlert(kTrue);
scriptRunner->RunScript(script, params);
As you can see, an ExtendScript library is loaded earlier and I'm using this file to get to my script runner.
This seems to work, however I get an assertion error now:
ASSERT 'RequestContext( fRequestContext ) == RequestContext( other->GetRequestContext() )' in c:\Development\basil\source\public\libs\publiclib\scripting\CScriptEventData.cpp at line 742 failed.
c:\Development\basil\source\public\libs\publiclib\scripting\CScriptEventData.cpp (742)
Does anybody have an idea?
Kind regards