imgSetAttribute
Usage
rval imgSetAttribute(uInt32 void_id, uInt32 attr, uInt32 value);
Purpose
Sets an attribute value.
Parameters
| Name | Type | Direction |
| void_id | uInt32 | input |
| attr | uInt32 | input |
| value | uInt32, uInt64*, or double* | input |
| rval | Int32 | output |
Parameter Discussion
void_id valid SESSION_ID or INTERFACE_ID.
attr: attribute to set. Refer to Attributes for valid types.
value: new attribute value. The type of this input is either uInt32, a pointer to a uInt64, or a pointer to a double.
If the attribute is of type uInt32, use this function as follows:
imgSetAttribute (sid, IMG_ATTR_ROI_HEIGHT, value)
If the attribute is of type uInt64, use this function as follows:
imgSetAttribute (sid, key,(uInt32) &value)
If the attribute is of type double, use this function as follows:
imgSetAttribute (sid, IMG_ATTR_BLACK_REF_VOLT,(uInt32) &value)
Refer to Attributes for the attribute type.
Return Value
This function returns 0 on success. On failure, this function returns an error code. For information about the error code, call imgShowError.