Marduk's profile - activity

Hi, what im trying to do is to turn off auto gain and auto exposure of my camera (Sony PS Eye). I know it is possible because i can do it in driver. However when want to do this from my code using following methods:

CvCapture* cap = cvCaptureFromCAM(0);    
cvSetCaptureProperty(cap, CV_CAP_PROP_EXPOSURE, 0.0);
cvSetCaptureProperty(cap, CV_CAP_PROP_GAIN, 0.0);

nothing happens, first cvSetCaptureProperty function is returning string "Error" to console and second one "setVideoSettings - QueryInterface Error". Am i doing something wrong?

Please help me, thanks.