Visual Basic Discussion Boards

Christian Graus24-May-05 11:40

24-May-05 11:40

Like it says, you've created a class library, which cannot be started. You need to create a new project, of type windows application. This needs to be your startup project (right click on the project name and set it there ), which means it will run when you start debugging. Such a project can consume ( i.e. use ) your class library, which is how you'd test a class library.

Christian Graus - Microsoft MVP - C++

Re: Help

KoshinMohamud24-May-05 14:47

KoshinMohamud

24-May-05 14:47

Thank you very much Graus, I have one more question while I was creating my project I renamed a class couple times then I got this massage “LengthWidth' is ambiguous in the namespace 'LenghtProject'.” I was trying to instantiate a class in other words trying to created object of “LengthWidth ” class { Dim compNum As LengthWidth = New LengthWidth(0, 0)}.

I looked up the Fully Qualified Names but that did not help. Could you please help me?

Love

Re: Help

toxcct24-May-05 20:46

toxcct

24-May-05 20:46

KoshinMohamud wrote:
LengthWidth' is ambiguous in the namespace

that means the compiler cannot find out which one of the several LengthWidth it finds in different Namespaces of the project.

use instead MyNameSpace.LengthWidth...

you can find the default namespace of your project in the project properties...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Help

Dave Kreskowiak24-May-05 14:43

Dave Kreskowiak

24-May-05 14:43

Just like Christian said, create a second project, a Windows Forms app, that you use as a test environment to test your control.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Help

albCode25-May-05 20:51

albCode

25-May-05 20:51

You should call that class from windows form code then execute that class which u did create.
or u should create nre winform project and begin good-coding

Voice Chatting System

Volts1324-May-05 10:11

Volts13

24-May-05 10:11

I am currently doing a small project abt a tutoring system and i did research in most of the functions coding but i still unable to find any coing about voice chatting. If anyone could kindly provide me a sample code of it.. Thx ^^

textbox in .ASP webform

SiliconScout24-May-05 9:49

SiliconScout

24-May-05 9:49

Hey there.

I am having a problem in that on my web form hitting the enter key is equal to clicking the submit button on the webform.

I have a series of text boxes on the page that the use enters in transactional information and I would like the enter key to either jump to the next text box or do nothing.

I know with a windows app I would use the Keypressed method, but the webform control obviously is missing this method.

How do I go about fixing this anyone?

Thanks.

Re: textbox in .ASP webform

Dave Kreskowiak24-May-05 11:14

Dave Kreskowiak

24-May-05 11:14

One, your question belongs in the ASP.NET Forum.

Two, your right. That functionality doesn't exist in a web page. You'll have to simulate it using client-side JavaScript. ASP.NET is a server-side only technology that generates HTML for a browser, nothing more.

And no, I don't know exactly how to do it.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: textbox in .ASP webform

SiliconScout24-May-05 11:18

SiliconScout

24-May-05 11:18

ahh thanks I am pretty new here.

I will take the question over to the ASP.NET forum.

Thanks again.

Help. I am creating a Program for college, in which the Program will read a Folder and

Paul Selwood24-May-05 7:10

Paul Selwood

24-May-05 7:10

I am creating a Program for college, in which the Program will read a Folder and create

a HTML page from the pictures that are storrd in that folder. .

What would be the best way to do it in VB Net 2003.

Thanks

Paul Selwood

Re: Help. I am creating a Program for college, in which the Program will read a Folder and

Christian Graus24-May-05 11:48

Christian Graus

24-May-05 11:48

You need to iterate through all the images, and for each, generate HTML into your page. So, find all files with an image extension, and then build your HTML per image in a loop.

Remember to put the html in the same folder, or to use the full path to the image.

Christian Graus - Microsoft MVP - C++

Re: Help. I am creating a Program for college, in which the Program will read a Folder and

Paul Selwood24-May-05 18:09

Paul Selwood

24-May-05 18:09

Thank you

Populating a List box in Access

thetuxpenguin24-May-05 6:39

thetuxpenguin

24-May-05 6:39

How would I write the code so that when I select a Option Button to change that values that are listed in a List box based off the Option Button that is selected. Also to have it change each time a option button is selected.

Print direct to printer without spool

XamIam24-May-05 3:22

XamIam

24-May-05 3:22

Is it possible to open a printer directly connected to the "Lpt:" port on a Windows XP system? I have a form that must be set up exactly on an old dot-matrix printer, and then printed after filling in some values. I would like to open the printer and send ASCII characters to the device.

Is this possible???

Thanks

XamIam
max@maxpcsupport.com

Re: Print direct to printer without spool

Dave Kreskowiak24-May-05 4:19

Dave Kreskowiak

24-May-05 4:19

A simple search of MSDN reveals: How to send raw data to a printer by using Visual Basic .NET[^]

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Print direct to printer without spool

XamIam24-May-05 4:52

XamIam

24-May-05 4:52

Thank you Dave, but I believe that sends the raw data to the printer via the spooler. I was to open the resource exclusively, send the character to control the print to advance so they can tear off the forms, then back up the device to get ready to print the next form. So some how I want to connect to the printer with my application.

Thanks again,
--max

XamIam
max@maxpcsupport.com

Re: Print direct to printer without spool

Dave Kreskowiak24-May-05 8:12

Dave Kreskowiak

24-May-05 8:12

Cute, but you're not going to get at the hardware directly on an NT Kernel machine. Well, not without writing your own Ring 0 .DLL.

The other code that "worked under VB6," will work, but it will also go through the spooler too.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Print direct to printer without spool

XamIam24-May-05 11:53

XamIam

24-May-05 11:53

Thanks for your answer, Dave.

I wonder how do check writing programs work?

Anyway, thanks for your response.
--max

XamIam
max@maxpcsupport.com

Re: Print direct to printer without spool

Dave Kreskowiak24-May-05 14:42

Dave Kreskowiak

24-May-05 14:42

They don't care about the spooler. A paper form is a paper form, even if it's 8.5" x 11" and blank, it doesn't matter. I have no idea why you're worried about the spooler handling the print job. That's what it's there for! You could spool up 1,000 checks to print, and while your application is off doing something else, the spooler is cranking out checks. So what if the codes you have to send to the printer make it reverse the paper so it aligns to the top of the page, it's still part of the print job! Besides, just about all dot matrix printers have an automatic tear-off function built into the anyway. Check the documentation on the printer to see what you have to do to get it to work.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Print direct to printer without spool

XamIam24-May-05 19:32

XamIam

24-May-05 19:32

I don't know, but it just seemed to me that for an app that will be run on one computer only with a printer that will have a printed 3 part form that will only be used by this one app that it shouldn't be that difficult to have the program have a direct connect to the printer. But I guess not. It looks like it will be print dialog and the spooler.

It makes all the sense in the world to have the spooler managing the output from several tasks.

Anyway thanks for your comments and generous help.

Later,
--max

XamIam
max@maxpcsupport.com

Re: Print direct to printer without spool

Dave Kreskowiak25-May-05 0:52

Dave Kreskowiak

25-May-05 0:52

It's far more difficult to go around the spooler that it is to just use it. This is the NT Kernel world, where ALL hardware is abstracted. If you need to get to the hardware, you need to go through a device driver to get at it...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Print direct to printer without spool

Carl Mercier24-May-05 7:03

Carl Mercier

24-May-05 7:03

Not sure if it still works... and it might not be the best programming practice, so make sure to obfuscate your code well enough once compiled Smile | :)

From the GW-BASIC days (I know it worked in VB6!)

<br />
OPEN "lpt1:" FOR OUTPUT AS #1<br />
PRINT #1, "Hello World"<br />
CLOSE #1<br />

I believe that was the syntax. Don't tell anyone I told you to do this Wink | ;)

Re: Print direct to printer without spool

XamIam24-May-05 7:18

XamIam

24-May-05 7:18

Thanks, I'll give a try. Do you think it will work with XP? Now where did I put the VB6 stuff? Big Grin | :-D

later, --max

XamIam
max@maxpcsupport.com

Re: Print direct to printer without spool

Carl Mercier24-May-05 7:37

Carl Mercier

24-May-05 7:37

I would assume it will. Not sure if .NET will allow you to run such legacy code, though. It's worth a shot anyway!

working with graphics need help...

Joey Picerno24-May-05 2:56

Joey Picerno

24-May-05 2:56

IM trying to create an irregular shaped button using GraphicsPath. Here is my code, the editor is squiggly underlining "Fillmode" saying it is ambiguous, what does that mean?????????

 Imports System.Drawing.Drawing2D<br />
       Imports System.Drawing.Drawing2D.GraphicsPath<br />
       Imports System.Drawing.Drawing2D.GraphicsContainer<br />
<br />
<br />
<br />
         Dim pts() As Point = { _<br />
         New Point(5, 15), _<br />
         New Point(35, 15), _<br />
         New Point(35, 5), _<br />
         New Point(55, 25), _<br />
         New Point(35, 45), _<br />
         New Point(35, 35), _<br />
         New Point(5, 35) _<br />
     }<br />
        ' Make the GraphicsPath.<br />
        Dim polygon_path As New GraphicsPath(FillMode.Winding)<br />
        polygon_path.AddPolygon(pts)<br />
        '<br />
        '   Convert the GraphicsPath into a Region.<br />
        Dim polygon_region = New Region(polygon_path)<br />
<br />
        ' Constrain the button to the region.<br />
        Button1.Region = polygon_region<br />
<br />
        ' Make the button fit the region.<br />
        Button1.SetBounds(Button1.Location.X, _<br />
            Button1.Location.Y, pts(3).X + 5, pts(4).Y + 5)<br />
<br />
    End Sub

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