Apple

On Nov 12, 2007, at 8:46 AM, Benjamin Kent wrote:

I have a custom param which is masquerading as an animatable bool toggle - i.e. the param is a toggle push button and it's value is changed when my plug-in is rendered such that it reflects the value of an internal data structure cached in the plug-in. This works fine, except that if the frame is cached, the push button doesn't get updated. For example, the default value of the push button is checked - the user unchecks it and it sets a keyframe of value 0 in the internal data structure. The user goes to the next frame and the push button returns to checked (as the internal data structure value at this frame is still 1). Then, if you go back to the previous frame, the push button stays checked, as the plug-in never renders and sets the value of the push button.

Now I realise I don't want to stop the caching, as a user would never be able to render and play a sequence - so is it possible to force the push button to have its drawRect function called whenever the frame is changed - that way I could query the plug-in at this point as to the value of the internal data structure?

My first question would be, "Why do you want to do this?" I don't understand what you're trying to accomplish, but what you've described seems incredibly arcane and user unfriendly. Maybe if you describe in more detail what you're trying to do we can give you a better answer.