CSplashScreen crashes in AU mode while opening, but not in VST mode

[Ju R.]

Hi,

I am trying to figure out why my CSplashScreen crashes while opening, if I use the wrapped AU version of my plugin. I use symbiosis 1.3. If I use the VST version, everything works all right.

This is the splash screen code:

        size (454, 156, 471, 173);

        size.offset (0, 0);

        point (0, 0);

        CRect toDisplay (0, 0, hSplashBitmap->getWidth (), hSplashBitmap->getHeight ());

        toDisplay.offset (15, 15);

        cSplashScreen = new CSplashScreen (size, this, kAbout, hSplashBitmap, toDisplay, point);

        lFrame->addView (cSplashScreen);

        hSplashBitmap->forget();

hThis is the position in symbiosis.mm where thread 1 receives a SIGABRT signal. It's in line 3149:

void SymbiosisComponent::automate(VSTPlugIn& plugIn, int parameterIndex, float /*value*/) {

       (void)plugIn;

       SY_ASSERT(&plugIn == vst);

       SY_ASSERT(parameterIndex >= 0 && parameterIndex < vst->getParameterCount());   <<------

Any idea what I am doing wrong here? 

Thanks for help.

[Ju R.]

I fixed the problem by disabling setParameterAutomated for the kAbout (Splashscreen) parameter in the vstgui editor code:

[CODE]void SDEditor::valueChanged (CControl* control) {

    if (cSplashScreen->getValue() || tag == kAbout)

        return;

[/CODE]

[Chris Randall]

You should put your kAbout parameter _after_ kNumParameters in the parameter enum; then it is ignored by all the parameter handling mechanisms (and the host's automation) and you don't run in to these problems. 

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[Admiral Quality]

Agreed. Symbiosis had some problems with non-parameter control IDs but
we got that fixed a few updates ago and they work fine now. I make a
second enum for the "non-parameters" after the actual-parameters enum
and initialize the first one to kNumParameters.

- Mike