Visual Basic

Help needed for bluetooth application...

6-Mar-09 3:52

First, you haven't asked a question. You also haven't described any kind of problem, or provided any detail into what you have, and what's you've done.

If you want to call a function in a .DLL, there's two basic methods of going about it. Which one you use depends on the type of .DLL you're talking about.

If it's a normal library .DLL, you have to use P/Invoke. This means you better have the documentation on the .DLL so you can create a correct function header to use. Google for "Pinvoke vb.net" for millions of examples.

If it's a COM-based .DLL, it has to be registered properly, the you can open your project properties, click on the References tab, then add a COM reference to the .DLL. You can then use the objects exposed by that library just like you would normal .NET classes.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: call dll

Smithers-Jones6-Mar-09 6:01

Smithers-Jones

6-Mar-09 6:01

I want, I want, I want... can't hear it any more. Everyday the same morons coming here, saying "I want" like little children. I want you to go away and never come back!
Moron. Dead | X|

"I love deadlines. I like the whooshing sound they make as they fly by." (DNA)

Jain Vijay5-Mar-09 18:55

Jain Vijay

5-Mar-09 18:55

Hi All

,
I'm trying to develop a application in vb.net,
to send any file from my PC to any bluetooth enabled mobile,
in coverage area of bluetooth dongle(connect with my usb port).
(More then 1 mobile via loop in 1 go)
Is there any class or library in .net is available.
If you can give me some sample code or link of any article...that will be very helpful for me.

Thnx.........
Vijay Jain

Cross Post

dan!sh 5-Mar-09 19:08

dan!sh

5-Mar-09 19:08

...

Time is the best teacher; unfortunately it kills all of its students.

जय हिंद

Re: Help needed for bluetooth application...

Bharat Jain5-Mar-09 20:08

Bharat Jain

5-Mar-09 20:08

Hi Vijay,

You can use C4F Toolkit , its free open source toolkit
You can find it at
http://www.codeplex.com/C4FDevKit[^]

Also you can find a sample at
http://blogs.msdn.com/coding4fun/archive/2007/08/19/4474153.aspx[^]

Another useful link
http://www.microsoft.com/express/samples/c4fdevkit/default.aspx[^]

Hope this helps Smile | :)

feel free to contact in case of any doubts

-Regards
Bharat Jain
bharat.jain.nagpur@gmail.com

Set Up and deployment

hrishiS5-Mar-09 18:28

5-Mar-09 18:28

Hi to All

I am trying to make an set up project in VB.net 2005. I have no idea about Set up and deployment.
Could anyone please tell me the important and necessary basic steps/settings to be made in Set Up and deployment project, in order to deploy a project.

Two important things I want to discuss that.
1. I have Crystal Reports
2. I included 2 COM components

So what are the settings to be made for the same.Please help

Thanks in advance

I am a beginner

Rupesh Kumar Swami5-Mar-09 19:55

5-Mar-09 19:55

There's tons of examples out there. You take those examples, learn the basic techniques from them, then modify or rewrite the examples to fit your needs.
try Google search for Setup & deployment VB.NET[^]

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

hrishiS5-Mar-09 19:59

5-Mar-09 19:59

Thanks,
But could you please tell me about the COM components I have talked about?
I Wanted to know after addidng these components (VLC player and WMP), is it necessary that the installed system should install the players, or not necessary

thanks

I am a beginner

Rupesh Kumar Swami5-Mar-09 20:16

5-Mar-09 20:16

I think, you can copy the COM component reference in Debug/Release folder of your project directory and after that when you create setup, include this references.

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

hrishiS5-Mar-09 20:33

5-Mar-09 20:33

sorry to ask u basics....Actually wht do we mean by adding references in the project?..How does this helps...

I am a beginner

Rupesh Kumar Swami5-Mar-09 20:45

5-Mar-09 20:45

when you add COM component, a references is added to your application. Navigate Menu Project--->Properties --->References Tab
This tab show all the references which is used by your application.Select appropriate COM COmponent Refrences and then from Properties choose 'Copy Local' to TRUE

hope this helps

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

hrishiS5-Mar-09 21:58

5-Mar-09 21:58

thanks a lot...

one more thing i wanted to confirm is what is copy to local means? It copies the dll to application or what?

And I can see the option "imported namespaces" too with so many checkboxes down... What am I supposed to do that for deploying purpose?

Thanks in advance

Rupesh Kumar Swami5-Mar-09 23:03

5-Mar-09 23:03

himangshuS wrote:
one more thing i wanted to confirm is what is copy to local means? It copies the dll to application or what?

copy the referenced dll to debug/Release folder.

himangshuS wrote:
And I can see the option "imported namespaces" too with so many checkboxes down... What am I supposed to do that for deploying purpose?

I have no idea about this thing . you can search on GOOGLE

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

hrishiS6-Mar-09 0:09

6-Mar-09 0:09

thanks rupesh for all your reply

I am a beginner

hrishiS6-Mar-09 0:47

6-Mar-09 0:47

could u please tell me the solution for the post which i have currently posted.....application.startpath

What is the application.startpath exactly is? and where to copy the files if i want to run them on the remote system(installed computer)

thanks

I am a beginner

Rupesh Kumar Swami6-Mar-09 1:03

6-Mar-09 1:03

application.startpath return the path of the EXE

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

hrishiS6-Mar-09 2:09

6-Mar-09 2:09

I have copied all the crystal report in the debug folder. and i have given application.startpath in code to view the reports...is that all fine?...Also please tell me to deploy the crystal report what do i have to do?....Some1 told me to add merger module....but how exactly?

thanks

I am a beginner

Dave Kreskowiak6-Mar-09 3:47

6-Mar-09 3:47

Plagarizing are you??

http://www.codeproject.com/script/Forums/View.aspx?fid=1646&msg=2951180[^]

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Rupesh Kumar Swami6-Mar-09 4:33

how to open a form when click on custom property item in propertygridview

6-Mar-09 4:33

my english is poor so i use your words

Rupesh Kumar Swami
Software Developer,
Integrated Solution,
Bikaner (India)

My Company
Award: Best VB.NET article of June 2008: Create Column Charts Using OWC11

dilipmca045-Mar-09 16:26

dilipmca04

5-Mar-09 16:26

i am adding one custom property to textbox.when i click on this item i need to show one form (like popup window).and this form having one textbox and one button..after entering the text in textbox and click on ok button.i need to display the text in this custom property item..

please any one help me.

Re: how to open a form when click on custom property item in propertygridview

Dave Kreskowiak6-Mar-09 3:45

OPENCV in grey-scale, another1 know how to convert to a colour output ..

6-Mar-09 3:45

There's a ton of articles here on creating custom editors. Just search the articles for "UITypeEditor".

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

CROSSPOST

Smithers-Jones6-Mar-09 6:32

Smithers-Jones

6-Mar-09 6:32

asked the same in c# (twice)

[modify] and here in vb.net twice as well[/modify]

"I love deadlines. I like the whooshing sound they make as they fly by." (DNA)

changjiang75-Mar-09 15:24

changjiang7

5-Mar-09 15:24

#include "stdlib.h"
#include "stdio.h"
#include "cv.h"
#include "highgui.h"
char *filename;
IplImage *image =0,*image2 =0, *image3=0;
uchar* colourpixels;
int main(int argc, char** argv)
{
cvNamedWindow("Source Image",2);
cvNamedWindow("test",2);
if(argc ==2)
{
filename=argv[1];
}
else exit(0);
if((image=cvLoadImage(filename,0))==0)
return -1;
image2= cvCloneImage(image);

image3=cvCreateImage(cvSize(image->width, image->height), IPL_DEPTH_8U, 1); // create pixel by pixel
for(int pos_y=0;pos_y<image2->height;pos_y++)
{
for(int pos_x=0;pos_x<image2->width;pos_x++)
{
colourpixels = &((uchar*)(image2->imageData+image2->widthStep*pos_y))[pos_x*1];

(image3->imageData+image3->widthStep*pos_y)[image3->width-1+(pos_x*1)]=*colourpixels;
}
}

cvShowImage("Source Image",image);
cvShowImage("test",image3);
cvWaitKey(0);
cvReleaseImage(&image2);
cvReleaseImage(&image);
return 0;
}

Re: OPENCV in grey-scale, another1 know how to convert to a colour output ..

Dave Kreskowiak5-Mar-09 16:24