GUsbContext

GUsbContext — Per-thread instance integration for libusb

Synopsis

struct              GUsbContext;
struct              GUsbContextClass;
enum                GUsbContextError;
#define             G_USB_CONTEXT_ERROR
GQuark              g_usb_context_error_quark           (void);
GUsbSource *        g_usb_context_get_source            (GUsbContext *context,
                                                         GMainContext *main_ctx);
GUsbContext *       g_usb_context_new                   (GError **error);
void                g_usb_context_set_debug             (GUsbContext *context,
                                                         GLogLevelFlags flags);

Object Hierarchy

  GObject
   +----GUsbContext

Properties

  "debug-level"              gint                  : Read / Write
  "libusb-context"           gpointer              : Read / Write / Construct Only

Description

This object is used to get a context that is thread safe.

Details

struct GUsbContext

struct GUsbContext;


struct GUsbContextClass

struct GUsbContextClass {
	GObjectClass			 parent_class;
};


enum GUsbContextError

typedef enum {
	G_USB_CONTEXT_ERROR_INTERNAL
} GUsbContextError;


G_USB_CONTEXT_ERROR

#define G_USB_CONTEXT_ERROR		(g_usb_context_error_quark ())


g_usb_context_error_quark ()

GQuark              g_usb_context_error_quark           (void);

Returns :

Our personal error quark.

Since 0.1.0


g_usb_context_get_source ()

GUsbSource *        g_usb_context_get_source            (GUsbContext *context,
                                                         GMainContext *main_ctx);

Returns a source for this context. The first call actually creates the source and the result is returned in all future calls.

context :

a GUsbContext

main_ctx :

a GMainContext, or NULL

Returns :

the GUsbSource. [transfer none]

Since 0.1.0


g_usb_context_new ()

GUsbContext *       g_usb_context_new                   (GError **error);

Creates a new context for accessing USB devices.

error :

a GError, or NULL

Returns :

a new GUsbContext object or NULL on error.

Since 0.1.0


g_usb_context_set_debug ()

void                g_usb_context_set_debug             (GUsbContext *context,
                                                         GLogLevelFlags flags);

Sets the debug flags which control what is logged to the console.

Using G_LOG_LEVEL_INFO will output to standard out, and everything else logs to standard error.

context :

a GUsbContext

flags :

a GLogLevelFlags such as G_LOG_LEVEL_ERROR | G_LOG_LEVEL_INFO, or 0

Since 0.1.0

Property Details

The "debug-level" property

  "debug-level"              gint                  : Read / Write

Allowed values: [0,3]

Default value: 0


The "libusb-context" property

  "libusb-context"           gpointer              : Read / Write / Construct Only