how can i disable keyboard?????? please help

[Lightmoon1992]

wish that anyone can help me in this, im working on administration project, and i need to lock the client keyboard, specially viewing Task manager, can please anyone tell me how to disable it????? please i dont have enough time

[ghades]

Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long
--
The BlockInput function blocks keyboard and mouse input events from reaching applications.
---
· fBlock
[in] Specifies the function's purpose. If this parameter is TRUE, keyboard and mouse input events are blocked. If this parameter is FALSE, keyboard and mouse events are unblocked. Note that only the thread that blocked input can successfully unblock input.

[Lightmoon1992]

i didnt got it

can you please post a small example on it???? many thanks

[dark_shadow]

Option Explicit
Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long
 
Private Sub Command1_Click()
fBlock (True)
End Sub

[Lightmoon1992]

"Option" is not declared, how can i decleare it???

[dglienna]

Just paste these two lines before any subs

Option Explicit
Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long

Option Explicit tells the IDE that you will declare each variable before you use it. It prevents spelling errors in your code. You can check Require Variable Declaration in the Options page, to have the IDE automatically place it in each form, module, and class. It is highly recommended that you enable this options. It will save you a lot of grief, and get you into good coding habits.

[Lightmoon1992]

doesnt work yet, can you please send me small example??

[bauey]

this code blocks both keyboard and mouse....can you tell me how to modify it to only block the keyboard?

[dglienna]

Nope. You'd have to use the KeyPress event, and set each keypress to 0, to eliminate it. Its not quite as easy.

[Hack]

doesnt work yet, can you please send me small example??

Show us what you are doing and maybe we can figure out what you are doing incorrectly.

[Lightmoon1992]

many thanks everyone, i solve it by adjusting some values in registry

[EckoDOG]

Ok well I didn't ask the question but maybe you guys can still help me instead.
I saw the code that dark_shadow and ghades posted.Well I can't seem to get their code to work. I keep getting a compile error it says sub or function not defined and highlights my command1_click. CommandButton.I know it is something easy and is right in front of me but I just can't see it. I am useing visual basic 6.0

Below is what I have enter in my frm

Option Explicit
Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long
 
Private Sub Command1_Click() 'This is what is hightlighted in yellow
fBlock (True) 'It also hightlights the fblock in grey
End Sub

[dglienna]

That wouldn't work. You would block the input, and wouldn't be able to unblock it. Try this sample to see that it works. It uses the sleep api to wait 10 seconds.

Option Explicit
 
Private Declare Function BlockInput Lib "user32" (ByVal fBlock As Long) As Long
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
 
Private Sub Form_Activate()
    'KPD-Team 2000
    'URL: [url]http://www.allapi.net/[/url]
    'E-Mail: [email][email protected][/email]
    DoEvents
    'block the mouse and keyboard input
    BlockInput True
    'wait 10 seconds before unblocking it
    Sleep 10000 ' for 10 seconds
    'unblock the mouse and keyboard input
    BlockInput False
    Unload Me
End Sub

[EckoDOG]

ok thxs for the help it works great. IF you really want to help you can take out you brain a give it to me lol jk.

[dglienna]

Just hang around here. You'll pick up things, and will be able to help others. It keeps you sharp!

[Hack]

ok thxs for the help it works great. IF you really want to help you can take out you brain a give it to me lol jk.

It is brains, yes, but it is also experience and you can't teach that!

[lahnlahn]

Hello. Im trying to do the same as them. My skills are not as good as yours, but I have a problem. I have to make a program, which can block the keyboard?

Which codes would you use?

[Pezster]

Cant simply do something like this?

Private Declare Function GetAsyncKeyState Lib "user32" _
        (ByVal vKey As Long) As Integer

Private Sub Timer1_Timer()
Dim KeyResult As Integer
Dim i As Byte

    For i = 1 To 254

        KeyResult = GetAsyncKeyState(i)
           
           If KeyResult = -32767 Then
                
                If i < 255 Then
                    
                    MsgBox "apple"
                        
                        Else
                
                End If
            
            End If
           
        Next
        
    End Sub

http://www.vbforums.com/showthread.php?t=550216