detecting keypresses in vb.net

[lifeisbetterwithketchup]

OK, I knew how to do this a few weeks ago, but I'm having a brain fart, and can't remember how to do it. How do I detect when a certain key is pressed in VB .NET 2002? I know it has something to do with KeyDown, KeyPress, and KeyUp. Basically I want to do "if the down arrow is pushed, do this" or "if the user presses the y key do this".

I know that was worded really badly, but I think it gets my point across (I'm operating on not much sleep).

[ghosstt]

well, i thought you could just handle a keypress on a certain button, but you can't. (vb.net) i asked my programming teacher, and he didn't know either. (i wanted to make W move forward more.) though there are defaults for the arrow keys, just open your code page, and go to form and then key UP

[Skyone]

well, i thought you could just handle a keypress on a certain button, but you can't. (vb.net) i asked my programming teacher, and he didn't know either. (i wanted to make W move forward more.) though there are defaults for the arrow keys, just open your code page, and go to form and then key UP

...jeez. You need a better teacher.

Look up the Win32 GetAsyncKeyState function.

[lifeisbetterwithketchup]

How do you utilize that? When I write a subroutine for KeyUp, it just triggers whenever any key is lifted up, not any specific key pushed down.

EDIT: Didn't see your post, Sky. I'm looking that up right now.

EDIT 2: Googled GetAsyncKeyState and couldn't find anything relating to VB, just C++.

[Skyone]

Win32 APIs are linked, they can be used with any language that supports linking.

Code: Select all

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

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GetAsyncKeyState(30);

[lifeisbetterwithketchup]

OK, I tried

Code: Select all

        If GetAsyncKeyState(65) = True Then
            MsgBox("lol")
        End If

and

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        If GetAsyncKeyState(65) Then
            MsgBox("lol")
        End If

and neither worked.

[JAY]

I did some game programming in Excel with Visual Basic , so the code might be the same as in VB.NET (though I'm not familiar with that software at all). For key presses, I used:

Code: Select all

Private Sub UserForm_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
'Pressing W (up)'
If KeyCode = 87 Then
'etc...'

...where the Keycode variable is set to the ASCII equivalent for the key being pressed. In Excel's Visual Basic, there is no equivalent for the arrow keys (and a few others), so that may change the button setup you were hoping for.

[lifeisbetterwithketchup]

That's how I ended up doing it. Another guy in my VB class showed me that.