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i'm use 2.18 3D(dev) free version,download wrappers for API.
run exe in _bin2d folder no display particle effect in program window.
use matrix.ptc everything ok.but some ptc ex:zero.ptc then no display.
i'm debug code found Magic_CreateFirstRenderedParticlesList return rendering.count==0.Why is it like this?tks.

You can save ptc-file using 3 ways:
1) Normal mode: full compatibility with editor, but API can't play emitters of 'Image' and 'Text'.
2) API mode: full compatibility with API, but part of information for editor is deleted. This mode is useful when you release the game.
3) Double mode: full compatibility with editor and API (the size of the ptc-file will be more). Check the flag: Edit->Program Options->Save Always. Now you can use "Normal mode" as "Double mode".

tks.Problem is solved.