Visual Basic

Re: How can I change the behavior of the "Close" button in a form?

3-Jun-05 4:51

Andy, I got it. Thank you so much!

Andy Davies3-Jun-05 5:15

Andy Davies

3-Jun-05 5:15

Glad to be of help Smile | :)

http://www.guardian.co.nr

.NET SDK. How to compile a VB file?

shapper2-Jun-05 14:06

shapper

2-Jun-05 14:06

Hello,

I just installed Microsoft .NET Framework SDK v1.1.
(http://www.microsoft.com/downloads/details.aspx?FamilyId=9B3A2CA6-3647-4070-9F41-A333C6B9181D&displaylang=en)

I need to compile to a DLL a VB file which has a class with some functions.

I know that if I have Visual Studio 2003 installed I would do:
vbc /t:library /out:myFile.dll myFile.vb

Is vbc in Frameword DSK? I can't find it.

Thanks,
Miguel

Drawing rubber band on screen...

Raunak Mehta2-Jun-05 7:44

Raunak Mehta

2-Jun-05 7:44

Hi guys. I am making a software which also contains a screenshot grabber. I want to draw rubber band selection area box for it. That means I have to draw on screen. I have been able to draw boxes on screen anywhere but they do not get cleaned up when the mouse moves and a new box has to be drawn for that new location. Could somebody please help me out in this. Please remember not for drawing on the form; For drawing on the screen anywhere.

Re: Drawing rubber band on screen...

Christian Graus2-Jun-05 10:38

Christian Graus

2-Jun-05 10:38

This[^] article shows how to get the desktop window using interop functions. If you're able to use interop functions, you should be able to use GDI functions as well. In GDI, you can draw using SRCINVERT, which means that your rubber band is created by inverting pixels in the box. Thus, you can undo this operation by doing it again before you change your co-ordinates, and no data is lost. Or you can just call Invalidate() on the desktop window so it refreshes itself before you draw your rubber band ( this could cause flicker )

Christian Graus - Microsoft MVP - C++

Re: Drawing rubber band on screen...

Raunak Mehta2-Jun-05 11:10

Raunak Mehta

2-Jun-05 11:10

Thanx Mr. Graus,
Thanks for the help but I'm sorry I didn't specify that I am working in Visual Basic 6. I know how to get the desktop window's DC and methods to draw on it but during dragging the desktop DC doesn't refresh and doesn't clear the box last drawn.

Re: Drawing rubber band on screen...

Christian Graus2-Jun-05 11:24

Christian Graus

2-Jun-05 11:24

I don't get why people still use VB6.....

In that case, this[^] is an article on rubber banding in C++, using different ROP codes. Basically, you select a code that is not destructive, then you draw your rectangle, and you draw it again to restore the old values before drawing a new rectangle elsewhere.

Or you could do the other thing I suggested, which is to Invalidate the desktop window, and force it to redraw.

Christian Graus - Microsoft MVP - C++

DataGrid

dec_obrien2-Jun-05 4:01

dec_obrien

2-Jun-05 4:01

Hi,
I think I want to use a DataGrid on a form! What I want to do is have all data in grid "Readonly" and have a link button to open a separate form with all of the data from the selected row for editing: the form will open with the ID of the row from the DataGrid and the edit etc. is done here.
THis is much the same way as I use the asp.net DataGrid. Should I be using a different control or can the DataGrid be changed to do this?
Thanks in advance.

Declan.

Re: DataGrid

toxcct2-Jun-05 4:22

List of Active Computers on Network

2-Jun-05 4:22

a datagrid allow you to get the selected row (CurrentRowIndex()) and to get each cell on that row (i don't remember the function name, but it might be something like CurrentCell()).

then, you recover each cell you like, and pass them to the form that is supposed to treat'em

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

Sumit Domyan2-Jun-05 1:39

Sumit Domyan

2-Jun-05 1:39

How would i get a list of all Active Computers on a network? All I need are
the computer names. Method that i am currently using lists all
computers even if they're not currently connected to the network.

Dim enTry As DirectoryEntry = New DirectoryEntry("LDAP://CORP")
Dim mySearcher As DirectorySearcher = New DirectorySearcher(enTry)
Dim resEnt As SearchResult

mySearcher.Filter = ("(objectClass=computer)")

TotalNodesLabel.Text = "Total computers: " + mySearcher.FindAll.Count.ToString

For Each resEnt In mySearcher.FindAll()
If IsNothing(resEnt) = False Then
ListOfNodesListBox.Items.Add(resEnt.GetDirectoryEntry().Name.ToString())
End If
Next

I was hoping to get a list of active computers, this method lists all
computers even if they're not currently connected to the network.

Thanks
Sumit Domyan

Re: List of Active Computers on Network

Dave Kreskowiak2-Jun-05 7:04

Dave Kreskowiak

2-Jun-05 7:04

You'll probably have to go down the list your getting and ping them all to determine which ones are live and which are not.

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

Combo Box Validation

suchi-gupta2-Jun-05 0:51

suchi-gupta

2-Jun-05 0:51

Hi All,
I want to restrict the user to type only 4 characters in the combo box
i have specified in the property max length=4
But its not working
How to do so
Thanks in Advance

Re: Combo Box Validation [EDITED]

toxcct2-Jun-05 1:24

2-Jun-05 1:24

If (myComboBox.Text.Length() >= 4) Then
    myComboBox.Text = myComboBox.Text.Left(4);
End If

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Anonymous2-Jun-05 1:48

2-Jun-05 1:48

Plz send the details about m_myComboBox
Is it some user defined function

toxcct2-Jun-05 2:01

2-Jun-05 2:01

sorry, i just made a copy/paste from a sample of a code of mine... D'Oh! | :doh:

<br />
m_myComboBox

is the same as myComboBox...
just remove its leading m_

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

Anonymous2-Jun-05 2:08

2-Jun-05 2:08

Sorry,but i am not getting any such property as combobox1.text.left(4)
Left property after text is not coming

toxcct2-Jun-05 2:15

2-Jun-05 2:15

it was in the idea...

do this :

If (myComboBox.Text.Length() >= 4) Then
    myComboBox.Text = Left(myComboBox.Text, 4);
End If

is that ok now ?

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

Anonymous2-Jun-05 2:37

2-Jun-05 2:37

No,Left() is not taking any parameter

Anonymous2-Jun-05 2:38

2-Jun-05 2:38

No,But Left() is not taking any parameter

toxcct2-Jun-05 2:49

If you are working with VB6

2-Jun-05 2:49

Anonymous wrote:
No,But Left() is not taking any parameter

sure it does. but it is into the Microsoft.VisualBasic Namespace (assuming you're working on VB.NET).

MSDN tells

Public Shared Function Left( _
   ByVal Str As String, _
   ByVal Length As Integer _
) As String

is this[^] satisfy you better now ?? Suspicious | :suss:

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

Yulianto.2-Jun-05 19:31

Yulianto.

2-Jun-05 19:31

Private Sub Combo1_KeyPress(KeyAscii As Integer)
    'check for backspace
    If KeyAscii = 8 Then
        Exit Sub
    End If
    If Len(Combo1.Text) > 3 Then
        KeyAscii = 0
    End If
End Sub

<italic>Work hard, Work effectively.

Member 19629203-Jun-05 21:35

Member 1962920

3-Jun-05 21:35

hai in vb.net it is working check once again
i check now
by

bodanampalli@yahoo.com

albCode6-Jun-05 0:06

albCode

6-Jun-05 0:06

in Property of ComboBox - MaxLength set value 4
then write code which the user try to write more then 4 letter
example:

If ComboBox1.Text > 4 Then
MessageBox("enter only 4 letters")
End If

toxcct10-Jun-05 9:36

10-Jun-05 9:36

seferi wrote:
If ComboBox1.Text > 4 Then
MessageBox("enter only 4 letters")
End If

you shouldn't "spam" the user screen with such a message...

or i didn't like to use your softs... Cool | :cool:

(hey, i'm joking Rose | [Rose]

)

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

Anonymous11-Jun-05 4:24