Adding custom constant to system constants

Question

I'm wonder if here is any way to add custom constant to system constants.

For example in my coding I often uses such code:

VB.NET
Private Sub myform_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
    If e.KeyCode = Keys.F3 Or (e.Control And e.KeyCode = Keys.F) Then
        search(mytextbox.Text.Trim)
    End If
End Sub

C#
private void myform_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
if (e.KeyCode == Keys.F3 | (e.Control & e.KeyCode == Keys.F)) {
    search(mytextbox.Text.Trim);
    }
}

Idea is to add new element to Enum Keys, say "Find" So I would be able to do this:

VB.NET    
If e.KeyCode = Keys.Find Then
    search(mytextbox.Text.Trim)
End If

C#
if (e.KeyCode == Keys.Find) {
    search(mytextbox.Text.Trim);
}

Of course I would first replace keystrokes Keys.F3 and e.Control+Keys.F to Keys.Find in some lower level "ProcessCmdKey" on Applicaton level like this:

Protected Overrides Function ProcessCmdKey(ByRef msg As Message, ByVal keyData As Keys) As Boolean

    If keyData = Keys.F3 Then
        msg.WParam = CType(Keys.Find, IntPtr)
        keyData = Keys.Find
    End If

    Return MyBase.ProcessCmdKey(msg, keyData)
End Function

So, question is: Could Keys.Find be added to Keys constants and if do - how?

Then this seem's really dont go. – Wine Too Oct 20 '13 at 20:37 — Wine Too, Oct 20 '13 at 20:37

score 0 · Accepted Answer · answered Oct 20 '13 at 19:53

0

No, because you don't control the source of the data (e.KeyCode). Let's say you could add a new value to the enum how could you tell windows to start sending you this particular new value when it detects the combination of control and keys?

answered Oct 20 '13 at 19:53

Slugart

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I mention that. I will override ProcessCmdKey from keys pressed to keys wanted. – Wine Too Oct 20 '13 at 20:13
Do you know what ProcessCmdKeys can do? http://msdn.microsoft.com/en-us/library/system.windows.forms.control.processcmdkey.aspx – Slugart Oct 20 '13 at 20:18
Of course, I use it among others for changing/replacing keys: If keyData = Keys.Enter Then keyData = Keys.Down msg.WParam = CType(Keys.Down, IntPtr) End If When I press Keys.Enter I catch e.KeyCode for Keys.Down in my form! – Wine Too Oct 20 '13 at 20:27

Adding custom constant to system constants

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