Re: Silverlight 2 and marshalling calls to the UI thread - WPF Discussion Boards

Pete O'Hanlon8-Apr-08 2:03

8-Apr-08 2:03

Jammer wrote:
Doesn't it also depend on what part your using?

I've been looking into audio support for my app recently and it seems that XAudio2 is going to be a complete wholesale replacement of DirectSound. XAudio2 being cross platform between XBox and PC.

Hmm ... I'm really not making any progress on my audio implementation either

Interesting - I've not looked into DirectSound recently (beyond having done some stuff with DirectX filters for Sonar).

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Re: DirectX vs XNA

Jammer8-Apr-08 3:47

Jammer

8-Apr-08 3:47

Really? I use SONAR as my main tool of choice for my recording studio

www.product23.co.uk

Jammer

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Re: DirectX vs XNA

Pete O'Hanlon8-Apr-08 4:22

Pete O'Hanlon

8-Apr-08 4:22

Jammer wrote:
I use SONAR as my main tool of choice for my recording studio

Cool. I love Sonar (it just fits easier with my being a guitarist), and I compose on Sibelius.

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Re: DirectX vs XNA

Yoyosch8-Apr-08 3:18

Yoyosch

8-Apr-08 3:18

So XNA is some kind of a wrapper to DirectX, just as WPF is, correct?

Re: DirectX vs XNA

Pete O'Hanlon8-Apr-08 3:26

Pete O'Hanlon

8-Apr-08 3:26

Yoyosch wrote:
So XNA is some kind of a wrapper to DirectX, just as WPF is, correct?

Superficially yes. It's designed to make creating XBOX and Windows games easier than doing it in raw DirectX.

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Re: DirectX vs XNA

Yoyosch8-Apr-08 3:36

Yoyosch

8-Apr-08 3:36

Thanks, that`s all what i wanted to know.

Silverlight 2 and marshalling calls to the UI thread

martin_hughes8-Apr-08 0:39

martin_hughes

8-Apr-08 0:39

After a bit of head scratching, I finally discovered how to marshal calls to the UI thread using the dispatcher object - and it turns out the whole process will be familiar to anyone who has done the same with Winforms:

private delegate void dUpdate();
private void update()
{
    if (this.Dispatcher.CheckAccess())
    {
      //Work to be done goes here
               
    }                    
    else
    {
      //Invoke the call on to the UI thread 
      this.Dispatcher.BeginInvoke(new dUpdate(this.update), new object[] {});
    }
            
}

Now the reason this involved some head scratching is that the CheckAccess property of the dispatcher doesn't actually appear in intellisense. Would that reason be because this is still a beta and the bugs are still being ironed out, or is it likely that MS will remove it from Silverlight at some point (I note, however, that the dispatcher and this method is very important to fully-blown WPF)?

Re: Silverlight 2 and marshalling calls to the UI thread

Michael Sync9-Apr-08 18:21

Michael Sync

9-Apr-08 18:21

martin_hughes wrote:
I finally discovered how to marshal calls to the UI thread using the dispatcher object - and it turns out the whole process will be familiar to anyone who has done the same with Winforms:

Great! thanks for sharing..

Some from SL forum shares the following code too. Ref http://silverlight.net/forums/p/665/1129.aspx[^]

new Thread(()=> {
mySilverlightTextBlock.Dispatcher.BeginInvoke(()=> mySilverlightTextBlock.Text = "Updated from a non-UI thread.");
}).Start();

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: Silverlight 2 and marshalling calls to the UI thread

Pete O'Hanlon9-Apr-08 22:27

Pete O'Hanlon

9-Apr-08 22:27

Bugs in the beta. As this is the usual method in WPF, I don't see them dropping it so I suspect that the Silverlight designer is at fault.

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Re: no

pratap21b4u28-Apr-08 13:56

pratap21b4u

28-Apr-08 13:56

sfsdfsfsdf

Re: no

Pete O'Hanlon28-Apr-08 22:05

Pete O'Hanlon

28-Apr-08 22:05

pratap21b4u wrote:
sfsdfsfsdf

The medication kicking in for you is it?

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Re: Silverlight 2 and marshalling calls to the UI thread

Mark Salsbery4-May-08 7:15

Mark Salsbery

4-May-08 7:15

More Info Here[^]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

How to set bitmap on a button control?

bankey10107-Apr-08 21:30

bankey1010

7-Apr-08 21:30

Hi All,

I am working with WPF application but i am new with that so i have to add bitmap on button at bottum.

can anybody give some idea how can i add images on button and text at top of the button in WPF Application?

Thanks
Bankey

Re: How to set bitmap on a button control?

Pete O'Hanlon7-Apr-08 22:23

Pete O'Hanlon

7-Apr-08 22:23

Well, from memory you could always assign one like this

:<Button Width="75" Height="40">
  <Grid>
   <Grid.ColumnDefinitions>
    <ColumnDefinition />
   </Grid.ColumnDefinitions>
   <Grid.RowDefinitions>
    <RowDefinition />
    <RowDefinition />
   </Grid.RowDefinitions>
   <TextBlock Grid.Row="0">
    <AccessText>_Hello</AccessText>
   </TextBlock>
   <Image Grid.Row="1" x:Name="vista_png" Source="vista.png"/>
  </Grid>
</Button>

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Re: How to set bitmap on a button control?

User 2710098-Apr-08 3:19

User 271009

8-Apr-08 3:19

I have a button control with image, image and text or just text in this article:

http://www.codeproject.com/KB/WPF/WPFBusinessAppsPartThree.aspx[^]

Cheers, Karl

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» Microsoft MVP - Client App Dev

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modified 27-Feb-21 21:01pm.

Re: How to set bitmap on a button control?

Pete O'Hanlon8-Apr-08 3:36

Pete O'Hanlon

8-Apr-08 3:36

Karl - how dare you get some sleep? I've been fielding questions on my own Wink | ;)

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Re: How to set bitmap on a button control?

User 2710098-Apr-08 3:43

User 271009

8-Apr-08 3:43

Yep,

Being 5 hours behind you, helps my stress level! LOL! Cool | :cool:

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

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Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Re: How to set bitmap on a button control?

Pete O'Hanlon8-Apr-08 4:22

Pete O'Hanlon

8-Apr-08 4:22

Karl Shifflett wrote:
Being 5 hours behind you, helps my stress level! LOL!

I'm glad I can help. Wink | ;)

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Re: How to set bitmap on a button control?

User 2710098-Apr-08 4:24

User 271009

8-Apr-08 4:24

Pete,

Help??? You are The Man. We are all very lucky to have you provide assistance to us in this forum.

Thanks for helping all of us!

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

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Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Re: How to set bitmap on a button control?

Pete O'Hanlon8-Apr-08 4:33

Pete O'Hanlon

8-Apr-08 4:33

Karl Shifflett wrote:
Help??? You are The Man. We are all very lucky to have you provide assistance to us in this forum.

Karl. You don't know how much that means to me coming from a WPF guru like yourself. I count myself lucky to be on a site that has people like yourself, Josh and Sacha on it. Your articles are a real inspiration.

Wow - enough self congratulations from us. Let's just admit that we're "The Men". Big Grin | :-D

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Re: How to set bitmap on a button control?

User 2710098-Apr-08 4:40

User 271009

8-Apr-08 4:40

Just two regular guys keeping it real and returning back to the community that helped us get going and keep our sanity. Cool | :cool:

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

My Blog | Mole's Home Page | MVP Profile

Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Re: How to set bitmap on a button control?

Pete O'Hanlon8-Apr-08 4:50

Pete O'Hanlon

8-Apr-08 4:50

Karl Shifflett wrote:
Just two regular guys keeping it real and returning back to the community that helped us get going and keep our sanity

I'd go with that. Smile | :)

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WPF, Expression Blend and C++

TragicComic6-Apr-08 17:10

TragicComic

6-Apr-08 17:10

I just went to the Microsoft "Heroes Happen Here" launch event and I'm really excited about WPF. However, all of my work is currently in C++ and at least for the next year or so will likely stay there.

I've been looking at some of the tutorials about hosting WPF content in a Win32 app, and this seems like kind of a no brainer, but the tutorials never get past the "here's how you do it procedurally".

I would very much like to be able to author forms and dialogs in Expression Blend and then load them from my C++ Win32 app.

Does anyone have any good tutorials, or have straight forward code snip-its for doing this? Is this even a reasonable thing to try to do?

Thanks in advance...
Adam

Re: WPF, Expression Blend and C++

Jammer7-Apr-08 1:34

Jammer

7-Apr-08 1:34

Have a look into ElementHost ...

It allows you to host WPF controls in WindowsForms. Not done it myself but there is a chapter in the Adam Nathan WPF Unleashed book that talks about it.

http://blog.voidnish.com/?p=119[^]

http://msdn2.microsoft.com/en-us/library/system.windows.forms.integration.elementhost.aspx[^]

Jammer

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Re: WPF, Expression Blend and C++

Jammer7-Apr-08 1:44

Jammer

7-Apr-08 1:44

Basically your going to have to make do with intermediate C# / VB / Blend projects. The example looks like it has to be a loose XAML file as well (no class definition using an x:Class="" declaration.

In Blend you end up with a partial class code-behind which I'm almost sure would blow up in your scenario.

<UserControl
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:Main="clr-namespace:WPFWindows"    
        xmlns:d="http://schemas.microsoft.com/expression/blend/2006"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"    
        x:Class="WPFWindows.Navigator3"
	Width="Auto" Height="Auto">

Jammer

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