dynamically add or remove items from popup menu?

[rea_brn]

Hi,

Is there a (safe) way to dynamically add or remove items

from a popup-menu type parameter for an effect plugin?

Thanks.

[Bruce Bullis · Accepted solution]

No. Parameter setup, including populating pop-up lists, happens before the effect is applied to a sequence.

[Zac Lam]

BBB is right that you can't dynamically add or remove items from a popup menu.  But you can rename the choices, and this might be all that is needed in some situations.  Here's some code to demonstrate it, which would work in the Supervisor sample:

      my_global_dataP         globP                   = reinterpret_cast<my_global_dataP>(DH(in_data->global_data));

      AEGP_SuiteHandler       suites(in_data->pica_basicP);

      AEGP_EffectRefH         meH                     = NULL;

      PF_ParamType            param_type;

      PF_ParamDefUnion        param_union;

      ERR(suites.PFInterfaceSuite1()->AEGP_GetNewEffectForEffect(globP->my_id, in_data->effect_ref, &meH));

      ERR(suites.EffectSuite3()->AEGP_GetEffectParamUnionByIndex(globP->my_id, meH, SUPER_FLAVOR_DISK_ID, &param_type, &param_union));

      if (param_type == PF_Param_POPUP)

      {

            strcpy((char*)param_union.pd.u.namesptr, "Chocolate|(-|Strawberry|(-|And more!");

      }

      if (meH){

            ERR2(suites.EffectSuite2()->AEGP_DisposeEffect(meH));

      }

Specifically, changing the number of items in the menu doesn't work, because modifying param_union.pd.num_choices doesn't seem to stick.

[dheeraj_c]

Hi,

    Is there a way to add or remove items from pop up menu dynamically? I'm asking this again because in 'Compound Blur' effect there is a pop up menu (Blur Layer) which shows all the layers in the project. As and when any layer is added/deleted the pop up menu is updated. If there is no way of doing it, then how is it done in Compound Blur?

Thanks & Regards,

Dheeraj.

[Bruce Bullis]

Layer and Path parameters are the exceptions; the contents of other pop-ups are static, and cannot be changed during the AE session.

[dheeraj_c]

Thanks for the response.

[wil_]

You can also check the "Supervisor" sample in the SDK, it shows how to do it.