How to register Hot Keys in VB.net

Code sample: Register multiple hotkeys such as Alt+D, Alt+C, etc.

Imports System.Runtime.InteropServices
	
Public Class Form1

    Public Const MOD_ALT As Integer = &H1 'Alt key
    Public Const WM_HOTKEY As Integer = &H312

    <DllImport("User32.dll")> _
    Public Shared Function RegisterHotKey(ByVal hwnd As IntPtr, _
                        ByVal id As Integer, ByVal fsModifiers As Integer, _
                        ByVal vk As Integer) As Integer
    End Function

    <DllImport("User32.dll")> _
    Public Shared Function UnregisterHotKey(ByVal hwnd As IntPtr, _
                        ByVal id As Integer) As Integer
    End Function

    Private Sub Form1_Load(ByVal sender As System.Object, _
                        ByVal e As System.EventArgs) Handles MyBase.Load
        RegisterHotKey(Me.Handle, 100, MOD_ALT, Keys.D)
        RegisterHotKey(Me.Handle, 200, MOD_ALT, Keys.C)
    End Sub

    Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
        If m.Msg = WM_HOTKEY Then
            Dim id As IntPtr = m.WParam
            Select Case (id.ToString)
                Case "100"
                    MessageBox.Show("You pressed ALT+D key combination")
                Case "200"
                    MessageBox.Show("You pressed ALT+C key combination")
            End Select
        End If
        MyBase.WndProc(m)
    End Sub

    Private Sub Form1_FormClosing(ByVal sender As System.Object, _
                        ByVal e As System.Windows.Forms.FormClosingEventArgs) _
                        Handles MyBase.FormClosing
        UnregisterHotKey(Me.Handle, 100)
        UnregisterHotKey(Me.Handle, 200)
    End Sub

End Class

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"HTTP Error 404 - File or Directory not found" error message when you request dynamic content with IIS 6.0

To permit IIS to serve dynamic content, the administrator must unlock this content in the Web service extensions node in IIS Manager. To do this, the administrator must either enable a pre-existing Web service extension or add a new Web service extension.

Enable a Pre-existing Web Service Extension in IIS 6.0

To permit IIS to serve content that requires a specific ISAPI or CGI extension that is already listed in the Web service extensions list, follow these steps:

1. Open IIS Manager, expand the master server node (that is, the Servername node), and then select the Web service extensions node.
2. In the right pane of IIS Manager, right-click the extension that you want to enable. In this example, this is Active Server Pages.
3. Click to select the Allow check box.

Add a New Web Service Extension to IIS 6.0

To permit IIS to serve content that requires a specific ISAPI or CGI extension that is not already listed in the Web service extensions list, follow these steps:

1. Open IIS Manager, expand the master server node, and then select the Web service extensions node.
2. In the right pane of the IIS Manager, click Add a new Web service extension under Tasks.
3. In the Extension name box, type a friendly name for the extension that you want to add (for example, FrontPage Server Extensions).
4. In the Required files box, click Add, and then select the path and the name of the file that will handle requests for the specific extension. After you select the path and the file name, click OK.
5. If the extension must be enabled immediately, click to select the Set extension status to allowed check box.
6. Click OK to save your changes.

For more information, please refer to http://support.microsoft.com/kb/315122