Visual Basic Discussion Boards

Re: how to numlock and caplock came in statusbar

UltraCoder6-Nov-06 9:19

6-Nov-06 9:19

Easy. Create 2 Status strip labels (CapsText and NumText). Then, create a timer and set it's value for about 100 milliseconds. Then in the timer control, type:

<br />
If My.Computer.Keyboard.CapsLock = True Then<br />
     CapsText.Text = "Caps On"<br />
End If<br />
If My.Computer.Keyboard.CapsLock = False Then<br />
      CapsText.Text = "Caps Off"<br />
End If<br />
<br />
If My.Computer.Keyboard.NumLock = True Then<br />
      Numtext.Text = "Num On"<br />
        End If<br />
        If My.Computer.Keyboard.NumLock = False Then<br />
      NumText.Text = "Num Off"<br />
        End If<br />

I hope this helps. Be sure to have the timer go off frequently, otherwise there will be a delay between the user hitting the key and the text changing. Smile | :)

Extreme Exe

Re: how to numlock and caplock came in statusbar

Dave Kreskowiak6-Nov-06 10:23

Dave Kreskowiak

6-Nov-06 10:23

Bad solution. You do not need a Timer to do this. See my post to the OP for a better solution.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: how to numlock and caplock came in statusbar

Dave Kreskowiak6-Nov-06 10:22

Dave Kreskowiak

6-Nov-06 10:22

Handle your Form's KeyDown or KeyUp event (the KeyPreview property of the form needs to be turned on!) and look for the keycodes NumLock and Capital, then update whatever control you're using as a status indicator appropriately.

Private Sub Form_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
    If e.KeyCode = Keys.NumLock Then
        ' Keyboard.Numlock will return True or False depending on the status
        ' of the indicator light on the keyboard.
        UpdateNumLockIndicator(My.Computer.Keyboard.NumLock)
    End If
 
    If e.KeyCode = Keys.Capital Then
        UpdateCapsLockIndicator(My.Computer.Keyboard.CapsLock)
    End If
End Sub

...and you do NOT need a Timer to do this!

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: how to numlock and caplock came in statusbar

nlarson116-Nov-06 10:53

nlarson11

6-Nov-06 10:53

Forgive but wouldn't this only handle the event when your form has focus? If you minimized your form and hit numlock, then maximized your form, it wouldn't know that the numlock was changed. I believe that's the purpose of the timer. So to solve this on a form_resize event, call the code on a windowstate change from minimized.

Private Sub Form2_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Resize
if me.WindowState<>FormWindowState.Minimized then
UpdateNumLockIndicator(My.Computer.Keyboard.NumLock)
UpdateCapsLockIndicator(My.Computer.Keyboard.CapsLock)
end if
End Sub

Actually you would need to put it on the Form_Activate event as well...

Re: how to numlock and caplock came in statusbar

Yona Low6-Nov-06 11:04

Yona Low

6-Nov-06 11:04

There are a few other events you would have to handle to always know the state of the keyboard.

I'm not saying a timer is perfect, but definitely less coding.

Maybe a keyboard hook?

Re: how to numlock and caplock came in statusbar [modified]

Dave Kreskowiak6-Nov-06 12:11

Dave Kreskowiak

6-Nov-06 12:11

A keyboard hook would be the ultimate solution for the problem.

I personally, favor more coding over the use of more resources. Using a Timer and redrawing the status control every 100ms imports its own problems, especially in an environment that makes heavy use of custom drawn controls that take some time to draw.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: how to numlock and caplock came in statusbar

UltraCoder6-Nov-06 11:22

UltraCoder

6-Nov-06 11:22

That's why I used a timer! Smile | :)

Extreme Exe

Re: how to numlock and caplock came in statusbar

Dave Kreskowiak6-Nov-06 12:08

Dave Kreskowiak

6-Nov-06 12:08

Yep, but the whole point is that a Timer is totally unnecessary and overkill since Ultra's example would needlessly redraw the status control every 100ms.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: how to numlock and caplock came in statusbar

rehan_cop7-Nov-06 8:21

rehan_cop

7-Nov-06 8:21

thank for the answer but i am using visual basic.net 2003 in this vision i find error: (variable not declear) in "UpdateNumLockIndicator" & "My.Computer.Keyboard.NumLock"
please help me in this case.

thanks.

Rehan.

Re: how to numlock and caplock came in statusbar

Dave Kreskowiak7-Nov-06 14:50

Dave Kreskowiak

7-Nov-06 14:50

UpdateNumLockIndicator is a method that you have to supply to update whatever control your using to show the status of the toggle.

The My namespace is only available in VB.NET 2005. It doesn't exist in 2002 or 2003.

Public Declare Auto Function GetKeyState Lib "user32.dll" (ByVal KeyCode As Integer) As Short
 
Public ReadOnly Property NumLock As Boolean
      Get
            Return ((GetKeyState(144) And 1) > 0)
      End Get
End Property

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: how to numlock and caplock came in statusbar

rehan_cop10-Nov-06 8:00

rehan_cop

10-Nov-06 8:00

i am using below function but doen't work. if you please me how to use it this function in detail so i can solve my problem.

Public Declare Auto Function GetKeyState Lib "user32.dll" (ByVal KeyCode As Integer) As Short Public ReadOnly Property NumLock As Boolean
Get
Return ((GetKeyState(144) And 1) > 0)
End Get
End Property

Thanks

Rehan.

Re: how to numlock and caplock came in statusbar

Dave Kreskowiak11-Nov-06 4:20

Dave Kreskowiak

11-Nov-06 4:20

You update the status of the indicators by checking this NumLock Property in your KeyDown event code.

Dave Kreskowiak
Microsoft MVP - Visual Basic

WebBrowser NewWindow Event Question

softwarejaeger6-Nov-06 7:02

softwarejaeger

6-Nov-06 7:02

Hello,

i have a question about the WebBrowser.NewWindow Event.
How can i open an Popup in a new Window? In this event, i can only Cancel the Internet Explorer, but i cannot tell my application, that it should open the Page in a new Form?

In VisualBasic 6 it has worked, when i use the Microsoft WebBrowser COM Tool, then it works too, but i want to use the VisualBasic. net 2005 WebBrowser Class.

Has anybody a solution for this problem?

Thanks to you all

Tasks Window on design time controls

incawarrior6-Nov-06 6:42

incawarrior

6-Nov-06 6:42

Does anyone know how to add a tasks window to a vb.net control? It's the small arrow at the top right area of the control. When a developer clicks on it, it shows a drop down menu.

cursor location

aransiola6-Nov-06 5:24

aransiola

6-Nov-06 5:24

how do i programatically insert a text at a particular cursor location in a text box

t.aransiola

Re: cursor location

nlarson116-Nov-06 5:51

nlarson11

6-Nov-06 5:51

replace the text "hello" with whatever you want

Select Case Me.TextBox1.SelectionStart
Case 0
Me.TextBox1.Text = "hello" & Me.TextBox1.Text
Case Else
Me.TextBox1.Text = Mid(Me.TextBox1.Text, 1, Me.TextBox1.SelectionStart) & _
"hello" & _
Mid(Me.TextBox1.Text, Me.TextBox1.SelectionStart + 1)
End Select

Re: cursor location

Coding C#6-Nov-06 21:31

Coding C#

6-Nov-06 21:31

Hi,

What abt this solution

textbox1.SelectedText="Text To Insert"<br />

Hope this Works...

Nitin...

memo field and RichText Control

aransiola6-Nov-06 5:22

aransiola

6-Nov-06 5:22

i stored text in a rich text control to a memo field in Access 2000 database.
I want to display teh content and append teh content using another richtext box control but the content of previous stored text shows garbage characters
any help

t.aransiola

Re: memo field and RichText Control

Dave Kreskowiak6-Nov-06 10:29

Dave Kreskowiak

6-Nov-06 10:29

Formatted text?? How is it formatted? How is the format information retained? Is it inline with the text, like HTML tags?

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: memo field and RichText Control

aransiola7-Nov-06 7:38

aransiola

7-Nov-06 7:38

not like HTML tags. Its like the text intermixed with some other ascii characters.
I will come with a sample characters it shows. i dont have it here now.

thank u

t.aransiola

counting words using mid

honeymooner6-Nov-06 3:53

honeymooner

6-Nov-06 3:53

please i need to know how to count the words in a sentence in console application using the mid function?

Thanks

Re: counting words using mid

coolestCoder6-Nov-06 4:05

coolestCoder

6-Nov-06 4:05

Hi,
Why do you use mid by the way ?. Just split the sentence on space character and then finding the length of array gives you the number of words in the string.
Just simple as it looks.

"A good programmer is someone who looks both ways before crossing a one-way street." -- Doug Linder

coolestCoder

Running excel macro from vb6

Sgn_Flex6-Nov-06 3:22

Sgn_Flex

6-Nov-06 3:22

Hi,
How do I run the excel macro from Visual Basic6.
thank you

Re: Running excel macro from vb6

PavanPareta6-Nov-06 21:56

PavanPareta

6-Nov-06 21:56

you have to use MS Excel COM in VB.

your macro code will be running. in VB6.0 Editor.

Cheer

Pavan Pareta

Get HDD Serial No. in vb dot net 2005

Vikash Yadav6-Nov-06 1:17

Vikash Yadav

6-Nov-06 1:17

Hi,

How i can get Hard Disk Serial No in VB Dot Net 2005 Application.

I want to get serial no in Text Box

Vikash Yadav

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