libZPlay library implements advanced FFT graph drawing. With one function you can draw advanced FFT graph on device context or window handle. Graph is based on data in wave buffer and is fully synchronized with audio data. User just need to refresh drawing with custom rate (e.g. 10 times in second, or faster). 

There are 4 types of FFT graph (line, area, bar, spectrum): 

Graph type	Screenshot
Lines
Area
Bars
Spectrum

There are 2 types of horizontal scale ( linear, logarithmic): 

Graph type	Screenshot
Linear
Logarithmic

User can also change area transparency, subgrid, ... You can draw graph on device context (HDC) or window control (HWND). 

To draw and configure FFT graph use:

Special features