[RESOLVED] [2005] keyboard events

Hello, i am not a begginer programmer but i never have the need to use keyboard events and when i learned a bit after i forgot how. I want to make a if statement that does this: When the user click left arrow key move picture box to the left. I basicly only need the code for the if left arrow key is pressed. I do not want to use a case i know there is another way besides using select case, since when i learned i didn't use that method.

You need to handle the appropriate controls KeyDown event, I assume you'll be needing the Forms KeyDown event:

vb Code:

Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
        If e.KeyCode = Keys.Left Then
            'Do whatever
        End If
    End Sub

Thankyou that is the Exact code i wanted thankyou very much because whenever i asked someone else they always used select cases and i dont get the concept of them.

Using Select Case provides an advantage of readability versus having many If-statements. See here:

vb Code:

Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
        If e.KeyCode = Keys.Left Then
            'Do whatever
        ElseIf e.KeyCode = Keys.Right
            'Do something else
        ElseIf e.KeyCode = Keys.Up
            'Do something crazy
        End If
    End Sub

The equivallent Select Case would be:

vb Code:

Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
        Select Case e.KeyCode
            Case Keys.Left
                'Do whatever
            Case Keys.Right
                'Do something else
            Case Keys.Up
                'Do something crazy
        End Select
    End Sub

They do the exact same thing, but the latter results in less code and is easier to read.

oh whell then thankyou again i think i am going to use a select case, but where u wrote select case e.keycode then you jsut wrote case keys.left case keys.right where in if statements u have to use e.keycode = keys.left etc.. so where u wrote in select case e.keycode that determines???

Quote:

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Originally Posted by noahssite

oh whell then thankyou again i think i am going to use a select case, but where u wrote select case e.keycode then you jsut wrote case keys.left case keys.right where in if statements u have to use e.keycode = keys.left etc.. so where u wrote in select case e.keycode that determines???

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http://msdn2.microsoft.com/en-us/lib...hx(VS.71).aspx;)

I understand now thankyou...

This Is Resolved!!!!!