sendkeys question

how do i send the enter key?

VB Code:

SendKeys "{ENTER}"

Just in case you missed the post in the other file. HOw do I determine left from right ctrl keys and the two enter keys?

If you've got MSDN, look up SendKeys, it has the list of Keys that you can use their.


And.... I think the keyboard sees the 2 Ctrl Buttons as the same key, and won't know the difference between the 2.

If you want to differentiate between two control keys you are going to have to write a keyboard hook program and trap the scan codes of the keys. I believe scan code of both controls are different. You can get lot of such programs on www.pscode.com/vb

Well... I used a program which displays the values for the keys, and it returned 18 for both Alt Buttons...

pc Madness: I have a couple of programs that have different functions for the two ctrl keys and alt keys. That program can tell which ctrl or alt key has been pressed. I gotta figure out how it does that. Same with the enter keys.

techyspecy: Thanks, I'll check out those programs and let you know.

Quote:

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Originally posted by Ephesians
pc Madness: I have a couple of programs that have different functions for the two ctrl keys and alt keys. That program can tell which ctrl or alt key has been pressed. I gotta figure out how it does that. Same with the enter keys.

techyspecy: Thanks, I'll check out those programs and let you know.

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Here's how to do that.


Place this code in standard module.

Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)


Public Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal nCode As Long, ByVal wParam As Long, lParam As Any) As Long

Public Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, ByVal dwThreadId As Long) As Long

Public Const WH_KEYBOARD_LL = 13
Public Const HC_ACTION = 0
Public Const WM_KEYDOWN = &H100
Public Const WM_KEYUP = &H101
Public Const WM_SYSKEYDOWN = &H104
Public Const WM_SYSKEYUP = &H105

Public Function KeyboardHookProc(ByVal nCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

If (nCode = HC_ACTION) Then
If (wParam = WM_KEYDOWN Or wParam = WM_SYSKEYDOWN) Then

CopyMemory k, ByVal lParam, Len(k)

MsgBox k.vkCode

endif
endif
KeyboardHookProc = CallNextHookEx(hHook, nCode,
wParam, ByVal lParam)
end function

'instead of scan code, you look for Virtual key code. Vistual key
'code for left ctrl is 162 while for right ctrl key its 163.


place this in general declaration of form

Dim hHook As Long

Place this code in the command button click event on the form ...

Private sub command1_click()
hHook = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf
KeyboardHookProc, App.hInstance, 0)
end sub

Please add all constants and API's (if i am missing any) to the standard module .....

This will do the stuff for you ..........

Now that's what I'm talking about.. Thanks a bunch!

You can also use GetAsyncKeyState()

VB Code:

Option Explicit
 
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
 
Private Const VK_CONTROL = &H11
Private Const VK_LCONTROL = &HA2
Private Const VK_RCONTROL = &HA3
 
Private Const VK_MENU = &H12
Private Const VK_LMENU = &HA4
Private Const VK_RMENU = &HA5
 
Private Const VK_SHIFT = &H10
Private Const VK_LSHIFT = &HA0
Private Const VK_RSHIFT = &HA1
 
Private Const VK_RETURN = &HD
 
Private Sub Form_Load()
  Dim lKey As Long
  
  ' Wait for Keyboard Buffer to Clear
  For lKey = 0 To 255
    Do While GetAsyncKeyState(lKey) <> 0
      DoEvents
    Loop
  Next
  
  ' Turn on Timer
  Timer1.Interval = 100
End Sub
 
Private Sub Timer1_Timer()
  Dim lKey As Long
  
  ' Check all Key States
  For lKey = 0 To 255
    If GetAsyncKeyState(lKey) <> 0 Then
      Select Case lKey
      Case VK_CONTROL
        Debug.Print "CONTROL"
        
      Case VK_MENU
        Debug.Print "ALT"
        
      Case VK_SHIFT
        Debug.Print "SHIFT"
        
      Case VK_LCONTROL
        Debug.Print "LEFT CONTROL"
        
      Case VK_LMENU
        Debug.Print "LEFT ALT"
        
      Case VK_LSHIFT
        Debug.Print "LEFT SHIFT"
        
      Case VK_RCONTROL
        Debug.Print "RIGHT CONTROL"
        
      Case VK_RMENU
        Debug.Print "RIGHT ALT"
        
      Case VK_RSHIFT
        Debug.Print "RIGHT SHIFT"
        
      Case VK_RETURN
        Debug.Print "RETURN/ENTER"
        
      End Select
    End If
  Next
End Sub

I am sorry ephseians, i missed a important part ...

add this also to standard module .......

Global hHook As Long

Public Type KBDLLHOOKSTRUCT
vkCode As Long
scanCode As Long
flags As Long
time As Long
dwExtraInfo As Long
End Type

Dim k As KBDLLHOOKSTRUCT