[Closed] stop render

Hi all,

i try to script a little preview tool for v-ray and have a problem to get it interactive.

which I would like to make is to activate renderer by a button (I create that still) but then i would like if i pan,zoom, arcrotate or select obj. and move, rot, scale them or change parameters stop the render process and after the changes done the render process starts automatically again.

i try it to control the render by a mouseclick, so if i click and hold the LMB in the viewport the rendering stop and if the LMB goes up the render starts again but it dont work because i cannot stop the render if it works, only with the esc-button. on the other hand i cannot select something during the render.

I would be pleased much if someone could help;-)

sorry for my english

cay magnolo