libusb_option enum
\ingroup libusb_lib Available option values for libusb_set_option().
Values
- LIBUSB_OPTION_LOG_LEVEL → const libusb_option
-
Set the log message verbosity.
The default level is LIBUSB_LOG_LEVEL_NONE, which means no messages are ever printed. If you choose to increase the message verbosity level, ensure that your application does not close the stderr file descriptor.
You are advised to use level LIBUSB_LOG_LEVEL_WARNING. libusb is conservative with its message logging and most of the time, will only log messages that explain error conditions and other oddities. This will help you debug your software.
If the LIBUSB_DEBUG environment variable was set when libusb was initialized, this function does nothing: the message verbosity is fixed to the value in the environment variable.
If libusb was compiled without any message logging, this function does nothing: you'll never get any messages.
If libusb was compiled with verbose debug message logging, this function does nothing: you'll always get messages from all levels.
const libusb_option(0) - LIBUSB_OPTION_USE_USBDK → const libusb_option
-
Use the UsbDk backend for a specific context, if available.
This option should be set immediately after calling libusb_init(), otherwise unspecified behavior may occur.
Only valid on Windows.
const libusb_option(1)
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int
-
A numeric identifier for the enumerated value.
no setterinherited
- name → String
-
Available on Enum, provided by the EnumName extension
The name of the enum value.no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → int
-
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
fromValue(
int value) → libusb_option
Constants
-
values
→ const List<
libusb_option> - A constant List of the values in this enum, in order of their declaration.