You are here

Notifications

The DLN library may notify the user application when new messages arrive from the device.

Messages

There are 4 different types of notifications:

  • Callback function.

  • Event object.

  • Window message.

  • Thread message.

You can configure the same notification settings for all the messages. To do so, call the DlnRegisterNotification() function and specify HDLN_ALL_DEVICES(0) value as a handle. In this case the DLN library will notify the user application about messages from all devices.

The DLN library may notify the application about messages from a specific device. To configure such notification settings, call the DlnRegisterNotification() function and specify the handle of the device. Streams (like devices) have their own handles. So, you may configure the notification settings for a specific stream as well.

You can use the DlnRegisterNotification() function several times, specifying various notification settings for different devices (streams). For example, if you have 4 devices, you may register certain notification settings for one device and different settings for other devices. When a device sends a message, the library checks the notification settings for current device. If the library finds such settings, the notification is generated. If there are no settings for current device, the library checks the notification settings for all devices. If there are no such settings either, the notification isn't generated and the message isn't pushed into the queue.

Sometimes it is useful when messages aren't pushed into the queue. It is most convenient for those who use only synchronous communication. During the synchronous communication the application doesn't call the DlnGetMessage() function. Thus the messages aren't removed from the queue. It leads to memory leak and eventually to memory overflow. If you don't want messages to be enqueued, you shouldn't register any notification settings.

Messages are not enqueued

If you want the messages to be enqueued without notification, do the following. Call the DlnRegisterNotification() function and specify DLN_NOTIFICATION_TYPE_NO_NOTIFICATION value as the notification type. In this case the messages will be pushed into the queue without notification to the user application. The messages can be obtained with the help of the DlnGetMessage() function.

Messages without notification

To unregister the notification settings call the DlnUnregisterNotification() function.

Rating: 
No votes yet
Daniella Aunger...
Daniella Aunger Daniella's picture
Offline
Last seen: 1 month 3 weeks ago
Joined: 01/29/2019 - 17:03
Notifications | USB-I2C/SPI/GPIO Interface Adapters

It's actually a nice and useful piece of information. I aam happy that youu simply
shared this helpful ibfo with us. Please stay us informed like
this. Thank you for sharing.

my website ... safe natural personal lubricant - <a href="http://www.info.cjfischbeck.com/wiki/doku.php?id=profile_florenekuykendal">Gerard</a>,

Chu Swinford Chu
Chu Swinford Chu's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 02/04/2019 - 19:58
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Thanks in favor of sharing such a nice thought, article
is nice, thats why i have read it entirely viagra tablets - http://j.Dpdhegcibppko@%28...%29a.langton@Sus.ta.i.n.j.ex.k@fen.Gku.an.gx.r.ku.ai8.xn%14.xn%14.u.k@Meli.S.a.Ri.c.h4223@e.xultan.tacoustic.sfat.lettuceerz@fault.ybeamdulltnderwearertwe.s.e@p.laus.i.bleljh@r.eces.si.v.e.x.g.z@leanna.langton@A.S.Fytghw.Syghsfgvbszdfgvdfgh.Bdv@Constance.H.Ar.R.In.Gto.N.9272.8@P.L.A.U.Sible.L.J.H@I.N.T.E.Rloca.L.Qs.J.Y@trsfcdhf.hfhjf.hdasgsdfhdshshfsh@hu.fe.ng.k.ua.ngniu.bi..uk41@Www.Zanele@silvia.woodw.o.r.t.h@Shasta.ernest@ba.tt.le9.578@jxd.1.4.7m.nb.v.3.6.9.cx.z.951.4@Ex.p.lo.si.v.edhq.g@silvia.woodw.o.r.t.h@r.eces.si.v.e.x.G.z@leanna.Langton@blank.e.tu.y.z.s@m.i.scbarne.s.w@e.xped.it.io.n.eg.d.g@burton.rene@e.xped.it.io.n.eg.d.g@burton.rene@Gal.EHi.Nt.on78.8.27@dfu.s.m.f.h.u8.645v.nb@WWW.EMEKAOLISA@carlton.theis@silvia.woodw.o.r.t.h@s.jd.u.eh.yds.g.524.87.59.68.4@Sus.ta.i.n.j.ex.k@www.mondaymorninginspiration@www.bailbondsspacecoast.com/modules.php?name=Your_Account&op=userinfo&username=CharleySke

Chu Swinford Chu
Chu Swinford Chu's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 02/04/2019 - 19:58
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Thanks in favor of sharing such a nice thought,
article is nice, thats why i have read it entirely viagra
tablets - http://j.Dpdhegcibppko@%28...%29a.langton@Sus.ta.i.n.j.ex.k@fen.Gku.an.gx.r.ku.ai8.xn%14.xn%14.u.k@Meli.S.a.Ri.c.h4223@e.xultan.tacoustic.sfat.lettuceerz@fault.ybeamdulltnderwearertwe.s.e@p.laus.i.bleljh@r.eces.si.v.e.x.g.z@leanna.langton@A.S.Fytghw.Syghsfgvbszdfgvdfgh.Bdv@Constance.H.Ar.R.In.Gto.N.9272.8@P.L.A.U.Sible.L.J.H@I.N.T.E.Rloca.L.Qs.J.Y@trsfcdhf.hfhjf.hdasgsdfhdshshfsh@hu.fe.ng.k.ua.ngniu.bi..uk41@Www.Zanele@silvia.woodw.o.r.t.h@Shasta.ernest@ba.tt.le9.578@jxd.1.4.7m.nb.v.3.6.9.cx.z.951.4@Ex.p.lo.si.v.edhq.g@silvia.woodw.o.r.t.h@r.eces.si.v.e.x.G.z@leanna.Langton@blank.e.tu.y.z.s@m.i.scbarne.s.w@e.xped.it.io.n.eg.d.g@burton.rene@e.xped.it.io.n.eg.d.g@burton.rene@Gal.EHi.Nt.on78.8.27@dfu.s.m.f.h.u8.645v.nb@WWW.EMEKAOLISA@carlton.theis@silvia.woodw.o.r.t.h@s.jd.u.eh.yds.g.524.87.59.68.4@Sus.ta.i.n.j.ex.k@www.mondaymorninginspiration@www.bailbondsspacecoast.com/modules.php?name=Your_Account&op=userinfo&username=CharleySke

Anita Wiese Anita
Anita Wiese Anita's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 02/07/2019 - 18:43
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Great post. I was checking continuously this blog and I
am impressed! Extremely useful information particularly the last part :
) I care for such information much. I was looking
for this particular information for a very long time. Thank
you and good luck. generic viagra - https://bbs.fckx.net/home.php?mod=space&uid=2058583&do=profile&from=space

Anita Wiese Anita
Anita Wiese Anita's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 02/07/2019 - 18:43
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Great post. I was checking continuously this blog and I am impressed!
Extremely useful information particularly the last part :
) I care for such information much. I was looking for this particular
information for a very long time. Thank you and good luck.
generic viagra - https://bbs.fckx.net/home.php?mod=space&uid=2058583&do=profile&from=space

Evelyne Banda E...
Evelyne Banda Evelyne's picture
Offline
Last seen: 1 month 1 week ago
Joined: 02/13/2019 - 05:19
Notifications | USB-I2C/SPI/GPIO Interface Adapters

My spouse and I stumbled over here coming from a different website and
thought I may as well check things out. I like what I see so i am just following you.
Look forward to checking out your web page repeatedly.
viagra without a doctor prescription - http://afrifotohub.com/the-insider-secrets-of-buy-viagra-online-discovered-2/

Evelyne Banda E...
Evelyne Banda Evelyne's picture
Offline
Last seen: 1 month 1 week ago
Joined: 02/13/2019 - 05:19
Notifications | USB-I2C/SPI/GPIO Interface Adapters

My spouse and I stumbled over here coming from
a different website and thought I may as well check things out.

I like what I see so i am just following you. Look forward to
checking out your web page repeatedly. viagra without a doctor prescription - http://afrifotohub.com/the-insider-secrets-of-buy-viagra-online-discovered-2/

Aurelio Fitzsim...
Aurelio Fitzsimmons Aurelio's picture
Offline
Last seen: 1 month 1 week ago
Joined: 02/14/2019 - 01:15
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Hiya! Quick question that's completely off topic.
Do you know how to make your site mobile friendly?
My weblog looks weird when viewing from my iphone 4.

I'm trying to find a theme or plugin that might be able to correct
this issue. If you have any recommendations, please share.

Appreciate it! viagra - http://phlsphy4biz.syusyokushien.com/userinfo.php?uid=160381

Aurelio Fitzsim...
Aurelio Fitzsimmons Aurelio's picture
Offline
Last seen: 1 month 1 week ago
Joined: 02/14/2019 - 01:15
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Hiya! Quick question that's completely off topic.
Do you know how to make your site mobile friendly? My weblog looks
weird when viewing from my iphone 4. I'm trying to find a theme or plugin that might be able to correct this issue.
If you have any recommendations, please share.
Appreciate it! viagra - http://phlsphy4biz.syusyokushien.com/userinfo.php?uid=160381

Ruth Carden Ruth
Ruth Carden Ruth's picture
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/28/2019 - 09:37
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Oh my goodness! Awesome article dude! Thank yyou so much,
However I am going through issues with your RSS. I don't know
the reason why I am unmable to join it. Is there anyone
else having the same RSS issues? Anyone that knows the answer can you
kindly respond? Thanks!!

Here is my website hışıltılı çocuk - https://Nazlikarakullukcucebi.com/

Ruth Carden Ruth
Ruth Carden Ruth's picture
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/28/2019 - 09:37
Notifications | USB-I2C/SPI/GPIO Interface Adapters

Oh my goodness! Awesome article dude! Thank you so much, However I
am going through issues with your RSS. I don't know the reason whhy I am unable to join it.
Is there anyone else having the same RSS issues? Anyonee that knows the answer can you kindly
respond? Thanks!!

Here is my webpage :: hışıltılı çocuk - https://Nazlikarakullukcucebi.com/

User login