Grabber::isDevOpen Method |
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| Checks whether a video capture device is opened. | ||
| Syntax: | bool isDevOpen() const; |
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| Return value: | true, if a device is associated with this object, false otherwise. |
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| Remarks: | Checks whether a video capture device is associated with this object. If the device was opened with Grabber::openDev and has become invalid in the meantime (e.g. the device has been unplugged), this method will still return true. The Grabber::isDevValid method can be used to determine whether the video capture device is accessible. |
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| See also: | Grabber, Grabber::closeDev, Grabber::isDevValid, Grabber::openDev | |