|  |  | 
|---|---|
| USB 2.0 USB 3.x GigE | USB 2.0 USB 3.x GigE | 
Syntax
INT is_EnableHdr (HIDS hCam, INT Enable)
Description
Some sensors support HDR knee point mode. You can use the is_EnableHdr() function to enable/disable it. To set the knee points of the HDR curve, you can use the is_SetHdrKneepoints() function.
For further information on HDR mode, please refer to the Kneepoint HDR sensors chapter.
| 
 | The HDR mode with knee points is only supported by the models UI-122x/UI-322x/UI-522x, UI-313xCP/UI-513x, and UI-314x/UI-514x. | 
Input parameters
| hCam | Camera handle | 
Return values
| IS_CANT_COMMUNICATE_WITH_DRIVER | Communication with the driver failed because no driver has been loaded. | 
| IS_CANT_OPEN_DEVICE | An attempt to initialize or select the camera failed (no camera connected or initialization error). | 
| IS_INVALID_CAMERA_HANDLE | Invalid camera handle | 
| IS_INVALID_PARAMETER | One of the submitted parameters is outside the valid range or is not supported for this sensor or is not available in this mode. | 
| IS_IO_REQUEST_FAILED | An IO request from the uEye driver failed. Possibly the versions of the ueye_api.dll (API) and the driver file (ueye_usb.sys or ueye_eth.sys) do not match. | 
| IS_NO_SUCCESS | General error message | 
| IS_NOT_SUPPORTED | The camera model used here does not support this function or setting. | 
| IS_SUCCESS | Function executed successfully This value is also returned in case an unsupported sensor type and IS_DISABLE_HDR are used. | 
Related functions