Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HaikuBook: Initial documentation for BNotification

Browse Source 
The implementation file contained some documentation. This has been moved
to the Haiku Book (and is rewritten in most cases). The documentation gives
some insight on how the notification_server works.

Change-Id: I82bafcf57101d4882bdf07e7f731df9cd8adc861
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2299
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
This commit is contained in:
Niels Sascha Reedijk 2020-03-01 08:32:05 +00:00
parent 0da74916e2
commit 02e45e32ae
9 changed files with 574 additions and 432 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
docs/user/Doxyfile
View File

@ -955,6 +955,7 @@ EXAMPLE_RECURSIVE = NO
# \image command).
IMAGE_PATH = . \
app/images \
interface/images \
keyboard \
midi2/images \

903
docs/user/app/Notification.dox
View File

@ -1,330 +1,573 @@
/*
* Copyright 2019 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Niels Sascha Reedijk, niels.reedijk@gmail.com
*
* Corresponds to:
* headers/os/app/Notification.h hrev51445
* src/kits/app/Notification.cpp hrev52287
*/
/*!
\file Notification.h
\ingroup app
\ingroup libbe
\brief Provides BNotification class and the notification_type enum.
*/
///// notification_type enum /////
/*!
\enum notification_type
\brief Undocumented
\since Haiku R1
*/
/*!
\var notification_type::B_INFORMATION_NOTIFICATION
\brief Undocumented
\since Haiku R1
*/
/*!
\var notification_type::B_IMPORTANT_NOTIFICATION
\brief Undocumented
\since Haiku R1
*/
/*!
\var notification_type::B_ERROR_NOTIFICATION
\brief Undocumented
\since Haiku R1
*/
/*!
\var notification_type::B_PROGRESS_NOTIFICATION
\brief Undocumented
\since Haiku R1
*/
///// BNotification class /////
/*!
\class BNotification
\brief Undocumented
\since Haiku R1
*/
/*!
\fn BNotification::BNotification(notification_type type)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn BNotification::BNotification(BMessage* archive)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn virtual BNotification::~BNotification()
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::InitCheck() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn static BArchivable* BNotification::Instantiate(BMessage* archive)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn virtual status_t BNotification::Archive(BMessage* archive,
bool deep = true) const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::SourceSignature() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::SourceName() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn notification_type BNotification::Type() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::Group() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetGroup(const BString& group)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::Title() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetTitle(const BString& title)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::Content() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetContent(const BString& content)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::MessageID() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetMessageID(const BString& id)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn float BNotification::Progress() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetProgress(float progress)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::OnClickApp() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn void BNotification::SetOnClickApp(const BString& app)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const entry_ref* BNotification::OnClickFile() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::SetOnClickFile(const entry_ref* file)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::AddOnClickRef(const entry_ref* ref)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn int32 BNotification::CountOnClickRefs() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const entry_ref* BNotification::OnClickRefAt(int32 index) const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::AddOnClickArg(const BString& arg)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn int32 BNotification::CountOnClickArgs() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const char* BNotification::OnClickArgAt(int32 index) const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn const BBitmap* BNotification::Icon() const
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::SetIcon(const BBitmap* icon)
\brief Undocumented
\since Haiku R1
*/
/*!
\fn status_t BNotification::Send(bigtime_t timeout = -1)
\brief Undocumented
\since Haiku R1
*/
/*
* Copyright 2019-2020 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Niels Sascha Reedijk, niels.reedijk@gmail.com
*
* Corresponds to:
* headers/os/app/Notification.h hrev51445
* src/kits/app/Notification.cpp hrev52287
*/
/*!
\file Notification.h
\ingroup app
\ingroup libbe
\brief Provides BNotification class and the notification_type enum.
*/
///// notification_type enum /////
/*!
\enum notification_type
\brief Visual style of the notification.
\since Haiku R1
*/
/*!
\var notification_type::B_INFORMATION_NOTIFICATION
\brief Information type
This will have the notification appear with a grey side bar.
\image html notification_information_type.png
\since Haiku R1
*/
/*!
\var notification_type::B_IMPORTANT_NOTIFICATION
\brief Important type
This will have the notification appear with a blue side bar.
\image html notification_important_type.png
\since Haiku R1
*/
/*!
\var notification_type::B_ERROR_NOTIFICATION
\brief Error type
This will have the notification appear with a red side bar.
\image html notification_error_type.png
\since Haiku R1
*/
/*!
\var notification_type::B_PROGRESS_NOTIFICATION
\brief Progress type
This will have the notification appear with a progress bar.
\image html notification_progress_type.png
\since Haiku R1
*/
///// BNotification class /////
/*!
\class BNotification
\brief Construct system-default notifications to be displayed to the user.
Haiku provides a notification system that allows you to display messages to
the user. There is quite some flexibility in how the message is presented.
You may use this class to build and send the notification. The properties
you can set are:
- The \link BNotification::BNotification() type of notification\endlink,
which can be an information message, a warning, an error, or a progress
message.
- The \link BNotification::SetGroup() group\endlink, which allows you to
organize notification display into different categories.
- A \link BNotification::SetTitle() title\endlink, which is a distinct
text element at the top of a notification view.
- The \link BNotification::SetContent() content\endlink, which is the text
message that is shown to the user.
- A \link BNotification::SetMessageID() message identifier\endlink that
allows you to modify the contents of a message that is being displayed,
which is particularly useful for progress notifications.
- For progress notifications, the
\link BNotification::SetProgress() percentage of completion\endlink can be
set.
- By default the notification uses the application's icon, but you may
set an \link BNotification::SetIcon() alternative icon\endlink.
- Finally there are a few ways you can configure the actions that happen
when a user clicks the notification. More on that below.
For example, with the following code, you may display a notification:
\code{.cpp}
BNotification notification(B_PROGRESS_NOTIFICATION);
notification.SetGroup("Group");
notification.SetTitle("Title");
notification.SetContent("This is the content");
notification.SetMessageID("mainwindow_progress")
notification.SetProgress(0.5);
notification.Send();
\endcode
\p
\image html notification_intro.png
Note that in the previous code example, we set a
\link BNotification::SetMessageID message identifier\endlink, which will
allow to update the notification when we have progressed. The use would be:
\code{.cpp}
// After sending the notification, you retain ownership so that you can update it
notification.SetProgress(0.7);
// In order to display the update, you send it again
notification.Send();
\endcode
Furthermore, it is possible to support some form of follow-up action, when
the user clicks the notification. First of all, you need to choose whether
you want to \link BNotification::SetOnClickApp() open a specific
application\endlink, or whether you want to
\link BNotification::SetOnClickFile() open a specific file\endlink and have
the system determine which application fits that. Additionally, you may
specify \link BNotification::AddOnClickArg() command line arguments\endlink
or pass additional \link BNotification::AddOnClickRef() file
references\endlink for the receiving application to process.
Finally, a note about the \c notification_server and how it groups and
handles messages coming from your application. The system is aware of the
source of the notifications, and identifies your application by it's
signature. That means that the identification of your application is
consistent, even if it is restarted, or if you have multiple instances
running. This impacts the \link BNotification::SetGroup() grouping\endlink
functionality and the \link BNotification::SetMessageID() message
updating\endlink functionality. If you have an application that can have
multiple instances, you will need to make sure that you properly manage
your group names and identifiers if you want to keep things separate.
\since Haiku R1
*/
/*!
\fn BNotification::BNotification(notification_type type)
\brief Construct an empty message, with the specified \a type.
The type influences the style of the notification view. See the
\ref notification_type enumerator for details.
\since Haiku R1
*/
/*!
\fn BNotification::BNotification(BMessage* archive)
\brief Construct a notification from an archive.
\since Haiku R1
*/
/*!
\fn virtual BNotification::~BNotification()
\brief Frees all resources associated with the object.
\since Haiku R1
*/
/*!
\fn status_t BNotification::InitCheck() const
\brief Returns the status of the constructor.
\since Haiku R1
*/
/*!
\fn static BArchivable* BNotification::Instantiate(BMessage* archive)
\brief Returns a new BNotification object from \a archive.
This class implements the archiving API, and as such, you can
build a new BNotification object from a previously created
BMessage archive. However, if the message doesn't contain an archived data
for a BNotification object, this method returns \c NULL.
\returns BNotification object from \a archive or \c NULL if it doesn't
contain a valid BNotification object.
\since Haiku R1
*/
/*!
\fn virtual status_t BNotification::Archive(BMessage* archive,
bool deep = true) const
\brief Archives the BNotification in the \c archive.
\see BArchivable::Archive(), Instantiate() static function.
\returns \c B_OK: if everything went fine, or other errors that describe why
archiving has failed.
\since Haiku R1
*/
/*!
\fn const char* BNotification::SourceSignature() const
\brief Returns signature of the application where the notification
originated.
When you build your own notifications, this will contain the signature of
the current application. If you receive notifications from other
applications, it will include theirs.
\returns Signature of the source application.
\since Haiku R1
*/
/*!
\fn const char* BNotification::SourceName() const
\brief Returns the name of the application where the notification
originated.
When you build your own notifications, this will contain the name of
the current application. If you receive notifications from other
applications, it will include theirs.
\returns Name of the source application.
\since Haiku R1
*/
/*!
\fn notification_type BNotification::Type() const
\brief Returns the type of the notification.
\returns A value of the \c notification_type enum that represents
notification type.
\since Haiku R1
*/
/*!
\fn const char* BNotification::Group() const
\brief Returns the group of the notification.
\see BNotification::SetGroup() for more information about groups.
\returns The string of the notification's group.
\since Haiku R1
*/
/*!
\fn void BNotification::SetGroup(const BString& group)
\brief Set a group for the notifcation.
The default behaviour of the \c notification_server is group the visible
notifications per running application, and then in order in which they have
been received. There may be situations where you want to override that
behavior and group related notifications. When you set a group name, the
\c notification_server will create a box with the \c group name as label,
and insert all related notifications in that box.
\image html notification_group.png
\since Haiku R1
*/
/*!
\fn const char* BNotification::Title() const
\brief Returns the title of the notification.
\returns The title of the notification as a string.
\since Haiku R1
*/
/*!
\fn void BNotification::SetTitle(const BString& title)
\brief Set a title for the notification.
\since Haiku R1
*/
/*!
\fn const char* BNotification::Content() const
\brief Returns the message of the notification.
\returns The message of the notification as a string.
\since Haiku R1
*/
/*!
\fn void BNotification::SetContent(const BString& content)
\brief Set a message for the notification.
\since Haiku R1
*/
/*!
\fn const char* BNotification::MessageID() const
\brief Returns the identifier of the notification.
\see BNotification::SetMessageID() for the purpose of having an identifier.
\returns The identifier of the notification as a string.
\since Haiku R1
*/
/*!
\fn void BNotification::SetMessageID(const BString& id)
\brief Sets notification's message identifier.
If you want to update the contents of an existing notification, you can
set a identifier for this message. When you send a new or updated message
with the same identifier, the \c notification_server will update the
existing message with the new content.
In order to effectively use this feature, you will have to make sure the
identifier is unique within the current application.
\since Haiku R1
*/
/*!
\fn float BNotification::Progress() const
\brief Returns the progress for the notification.
\see BNotification::SetProgress() for more information about this value.
\returns A value between 0.0 and 1.0 if notification's type is
\c B_PROGRESS_NOTIFICATION, or otherwise -1.
\since Haiku R1
*/
/*!
\fn void BNotification::SetProgress(float progress)
\brief Sets progress information.
When you are building a notification of the type \c B_PROGRESS_NOTIFICATION
the notification view will show a progress bar and a label that
expresses the progress in a percentage. Using this method you can set
what the bar and label express.
The valid range is between 0.0 and 1.0. If \c progress is lower than 0.0
(i.e. negative), the value will be set to 0.0. If it is higher than 1.0,
it will be set to 1.0.
\since Haiku R1
*/
/*!
\fn const char* BNotification::OnClickApp() const
\brief Returns the signature of the application that will be called when
the notification is clicked.
\see More information about this property in BNotification::SetOnClickApp().
\since Haiku R1
*/
/*!
\fn void BNotification::SetOnClickApp(const BString& app)
\brief Set which application should be called when the notification is
clicked by the user.
The value \c app should be a valid application signature, for example
\c 'application/x-vnd.Haiku-StyledEdit'.
Using this property has precedence on when BNotification::SetOnClickFile()
is used. If you want interacting with the notification opening a specific
file, then you should use this method in combination with
BNotification::AddOnClickRef().
\see Additional actions and parameters can be set through
BNotification::SetOnClickFile(), BNotification::AddOnClickRef()
and BNotification::AddOnClickArg().
\since Haiku R1
*/
/*!
\fn const entry_ref* BNotification::OnClickFile() const
\brief Returns the reference to the file that will be opened when the
notification is clicked.
\see More information about this property in BNotification::SetOnClickFile().
\since Haiku R1
*/
/*!
\fn status_t BNotification::SetOnClickFile(const entry_ref* file)
\brief Set which file should be opened when the notification is
clicked by the user.
The file will be opened by the default application for this file type.
You cannot use this action in combination with
BNotification::SetOnClickApp(). If you use this way of setting an action,
this action will be ignored.
\see Additional actions and parameters can be set through
BNotification::SetOnClickApp(), BNotification::AddOnClickRef()
and BNotification::AddOnClickArg().
\since Haiku R1
*/
/*!
\fn status_t BNotification::AddOnClickRef(const entry_ref* ref)
\brief Add a \c ref to the list of arguments passed when a user clicks the
notification.
This method allows you to construct a list of refs, that will be sent to
the application specified by BNotification::AddOnClickApp(), or the one
that is associated with BNotification::AddOnClickFile(). The refs will be
handled by the application's BApplication::RefsReceived() hook method.
\since Haiku R1
*/
/*!
\fn int32 BNotification::CountOnClickRefs() const
\brief Returns the number of refs to be passed when the user clicks on
the notification.
\see BNotification::AddOnClickRef()
\since Haiku R1
*/
/*!
\fn const entry_ref* BNotification::OnClickRefAt(int32 index) const
\brief Returns the ref that is stored at \c index.
\see BNotification::AddOnClickRef()
\since Haiku R1
*/
/*!
\fn status_t BNotification::AddOnClickArg(const BString& arg)
\brief Add to a list of arguments that are passed to an application when
the user clicks on the notification.
This method allows you to construct a list of arguments, that will be sent
to the application specified by BNotification::AddOnClickApp(), or the one
that is associated with BNotification::AddOnClickFile(). The args will be
handled by the application's BApplication::ArgvReceived() hook method.
\since Haiku R1
*/
/*!
\fn int32 BNotification::CountOnClickArgs() const
\brief Returns the number of args to be passed when the user clicks on
the notification.
\see BNotification::AddOnClickArg()
\since Haiku R1
*/
/*!
\fn const char* BNotification::OnClickArgAt(int32 index) const
\brief Returns the arg that is stored at \c index.
\see BNotification::AddOnClickArg()
\since Haiku R1
*/
/*!
\fn const BBitmap* BNotification::Icon() const
\brief Returns the icon for the notification.
\see BNotification::SetIcon() for more information on this property.
\return Returns a borrowed unchangeable reference to the icon.
\since Haiku R1
*/
/*!
\fn status_t BNotification::SetIcon(const BBitmap* icon)
\brief Set the icon of the notification.
Set the icon for the notification. By default, the application icon is
used. This method makes a copy of the \a icon.
\param icon The icon that should be displayed with the notification.
\returns \c B_OK if everything went fine, \c B_NO_MEMORY when the \a icon
could not be copied, or another error if something else went
wrong.
\since Haiku R1
*/
/*!
\fn status_t BNotification::Send(bigtime_t timeout = -1)
\brief Send the notification to the notification_server.
The notification is delivered asynchronously to the notification_server,
which will display it according to its settings and filters.
After sending, you retain ownership of the notification. The advantage is
that you can re-use the notification at a later moment, or use the object to
update the notification. See BNotification::SetMessageID() about updating
displayed notifications. If you allocate the notification on the heap, be
sure to free the memory.
\param timeout The \a timeout in microsecond that the notification should
be displayed. If you want to use the default timing, use the default
argument or pass \c -1.
\returns \c B_OK if everything went fine, \c B_BAD_PORT_ID if there was a
problem connecting to the \c notification_server, or any other
errors if something went wrong transmitting the notification.
\since Haiku R1
*/

BIN
docs/user/app/images/notification_error_type.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 3.7 KiB

BIN
docs/user/app/images/notification_group.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 17 KiB

BIN
docs/user/app/images/notification_important_type.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 3.9 KiB

BIN
docs/user/app/images/notification_information_type.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 3.8 KiB

BIN
docs/user/app/images/notification_intro.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 12 KiB

BIN
docs/user/app/images/notification_progress_type.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 4.9 KiB

102
src/kits/app/Notification.cpp
View File

@ -140,8 +140,6 @@ BNotification::~BNotification()
}
/*! \brief Returns initialization status.
*/
status_t
BNotification::InitCheck() const
{
@ -149,16 +147,6 @@ BNotification::InitCheck() const
}
/*! \brief Returns a new BNotification object from @archive.
Returns a new BNotification object, allocated by new and created
with the version of the constructor that takes BMessage archive.
However, if the message doesn't contain an archived data for a
BNotification object, this method returns NULL.
\return BNotification object from @archive or NULL if it doesn't
contain a valid BNotification object.
*/
BArchivable*
BNotification::Instantiate(BMessage* archive)
{
@ -169,13 +157,6 @@ BNotification::Instantiate(BMessage* archive)
}
/*! \brief Archives the BNotification in the BMessages @archive.
\sa BArchivable::Archive(), Instantiate() static function.
\return
- \c B_OK: Everything went fine.
- \c Other errors: Archiving has failed.
*/
status_t
BNotification::Archive(BMessage* archive, bool deep) const
{
@ -241,10 +222,6 @@ BNotification::Archive(BMessage* archive, bool deep) const
}
/*! \brief Returns source application signature.
\return Source application signature.
*/
const char*
BNotification::SourceSignature() const
{
@ -252,10 +229,6 @@ BNotification::SourceSignature() const
}
/*! \brief Returns source application name.
\return Source application name.
*/
const char*
BNotification::SourceName() const
{
@ -263,11 +236,6 @@ BNotification::SourceName() const
}
/*! \brief Notification's type.
\return A value of the notification_type enum that represents
notification type.
*/
notification_type
BNotification::Type() const
{
@ -275,10 +243,6 @@ BNotification::Type() const
}
/*! \brief Returns notification's group.
\return Notification's group.
*/
const char*
BNotification::Group() const
{
@ -288,10 +252,6 @@ BNotification::Group() const
}
/*! \brief Sets notification's group.
Notifications can be grouped together setting the same group.
*/
void
BNotification::SetGroup(const BString& group)
{
@ -299,10 +259,6 @@ BNotification::SetGroup(const BString& group)
}
/*! \brief Returns notification's title.
\return Notification's title.
*/
const char*
BNotification::Title() const
{
@ -312,8 +268,6 @@ BNotification::Title() const
}
/*! \brief Set notification's title.
*/
void
BNotification::SetTitle(const BString& title)
{
@ -321,10 +275,6 @@ BNotification::SetTitle(const BString& title)
}
/*! \brief Returns notification's message.
\return Notification's message.
*/
const char*
BNotification::Content() const
{
@ -334,8 +284,6 @@ BNotification::Content() const
}
/*! \brief Sets notification's message.
*/
void
BNotification::SetContent(const BString& content)
{
@ -343,10 +291,6 @@ BNotification::SetContent(const BString& content)
}
/*! \brief Returns notification's message identifier.
\return Notification's message identifier.
*/
const char*
BNotification::MessageID() const
{
@ -356,8 +300,6 @@ BNotification::MessageID() const
}
/*! \brief Sets notification's message identifier.
*/
void
BNotification::SetMessageID(const BString& id)
{
@ -365,16 +307,6 @@ BNotification::SetMessageID(const BString& id)
}
/*! \brief Returns progress information.
If notification's type is \c B_PROGRESS_NOTIFICATION, returns a value
between 0.0 and 1.0 that represent progress percentage.
If notification's type is not \c B_PROGRESS_NOTIFICATION, returns -1.
\return Percentage if notification's type is B_PROGRESS_NOTIFICATION
or otherwise -1.
*/
float
BNotification::Progress() const
{
@ -384,13 +316,6 @@ BNotification::Progress() const
}
/*! \brief Sets progress information.
Sets progress percentage, this information will be used only
if notification's type is \c B_PROGRESS_NOTIFICATION.
The value of @progress must be between 0.0 and 1.0.
*/
void
BNotification::SetProgress(float progress)
{
@ -495,10 +420,6 @@ BNotification::OnClickArgAt(int32 index) const
}
/*! \brief Notification's icon.
\return Notification's icon.
*/
const BBitmap*
BNotification::Icon() const
{
@ -506,17 +427,6 @@ BNotification::Icon() const
}
/*! \brief Sets notification's icon.
Sets notification's icon.
This method does not assume ownership of @icon.
\param icon Icon
\return
- \c B_OK: Everything went fine.
- \c B_NO_MEMORY: Allocation of @icon copy has failed.
- \c Other errors: Creation of @icon copy failed for some reason.
*/
status_t
BNotification::SetIcon(const BBitmap* icon)
{
@ -534,18 +444,6 @@ BNotification::SetIcon(const BBitmap* icon)
}
/*! \brief Sends a notification to the notification_server.
The notification is delivered asynchronously to the notification_server,
which will display it according to its settings and filters.
\param timeout Microseconds after the message fades out.
\return
- \c B_OK: Everything went fine.
- \c B_BAD_PORT_ID: A connection to notification_server could not be
established or the server is not up and running anymore.
- \c Other errors: Building the message from the notification failed.
*/
status_t
BNotification::Send(bigtime_t timeout)
{