Looking for help wrapping a DLL into a B4P library...

agraham

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• Mar 31, 2011

• #21

I've just noticed that there's a line missing in StopScan. It should be -

B4X:

       public void StopScan()
        {
            scanning = false;
            decoder.CancelScanBarcode();
        }

 

T

Tex8503

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• Mar 31, 2011

• #22

Cool beans. I'm excited to give this a shot. The only problem I know of straight away is that I won't be able to add Dolphin.dll as a component because I can't move it out of the 'windows' directory on the device. Is there another way I can reference it in B4P to achieve the same result?

EDIT: I misread your post and thought it said decoder.dll instead of dolphin.dll - my mistake! I'll give this a shot shortly.

 

Last edited: Mar 31, 2011

T

Tex8503

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• Mar 31, 2011

• #23

Got an error when trying it... Posting the screen of the error but I'm gonna look into it too.

EDIT : Also here's my B4P code:

Sub Globals

End Sub

Sub App_Start
Form1.Show
hwell.New1
hwell.StartScan
End Sub

Sub btnscan_click
hwell.StopScan
End Sub

 

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Last edited: Mar 31, 2011

agraham

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• Mar 31, 2011

• #24

That's odd, the DecodeAssembly C# example doesn't show that any initialisation is needed.

Also you don't have a Decode event Sub? Something like

B4X:

Sub hwell_Decode
  Msgbox(hwell.Message, "Result = " & hwell.ResultCode)
End SUb

 

T

Tex8503

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• Mar 31, 2011

• #25

The plot thickens... If I even just try to initialize it with hwell.new - I get that error...

EDIT: Never mind - I really need to be careful. I had the scanwedge still running so it couldn't gain exclusive access to the imager.

EDIT 2: It works! I'm extremely excited to try and do more with this now that I've got a starting point to try other things. Thank you very much, Agraham!

 

Last edited: Mar 31, 2011

agraham

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• Mar 31, 2011

• #26

Tex8503 said:

It works!

Click to expand...

 

T

Tex8503

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• Mar 31, 2011

• #27

My next goal is to figure out how to map these to the scan buttons (which is the 43 key). I can't seem to get B4P to recognize these as keys... Is there a way I can do this with the 'Door' library? Or do I need to write this out in the dolphin.dll?

 

agraham

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• Mar 31, 2011

• #28

You could try using KeyPreview on the Form which is what the DecodeAssembly demo does. Look at my post #3 here http://www.b4x.com/forum/questions-help-needed/5635-how-remove-key-after-keypreview.html.

 

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Tex8503

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• Apr 1, 2011

• #29

So I'm starting to make improvements and learn a bit about C#. I'm trying to add
the public class sound that's in HandheldProducts.Embedded.Hardware - but it won't let me seem to do it as its telling me I need another constructor. I thought I did this - but it seems to be fighting me.

Do you know of any tutorials online that you can recommend that will show me the info I need to get started trying to do what I'm trying to do?

 

agraham

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• Apr 1, 2011

• #30

I don't know of any specific tutorials on-line but there are lots if you Google. My preferred reference for C# is "C# : The Complete Reference" by Herb Schildt.

I don't understand enough about what you are trying to do to comment. I presume it is the C# compiler that is complaining. If you want to post the .cs file I will comment on it if you want.

 

T

Tex8503

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• Apr 6, 2011

• #31

Think I figured out my issue. I'll look that book and see if I can find it. Thanks again for all your help, agraham. I've actually already gone ahead and done a port of the code for the Honeywell Dolphin CE devices. My next task will be looking at the Motorola devices, starting with the MC55, because we'll have an upcoming project where we'll need to use them.

Thanks again!