Take a look at the CNiSlide::Images method. The documentation describes how you can access a CNiImage that corresponds to parts of the slide, including the increment and decrement buttons. Once you have the CNiImage for the buttons, you can configure the animation, blinking, etc. For example:
CNiImage image = m_slide.Images(_T("Increment Button"));
image.BlinkInterval = CNiImage::SpeedVeryFast;
// ...
- Elton