87 lines
3.1 KiB
VB.net
87 lines
3.1 KiB
VB.net
Option Explicit On
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Imports System.Windows.Forms
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Public Class Hotkey
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Implements IMessageFilter
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Private _OwnerForm As Form
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Private _HotkeyList As New Dictionary(Of Short, HotKeyObject)
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Private _HotkeyIDList As New Dictionary(Of String, Short)
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''' <summary>
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''' Diesem Event wird immer die zugewiesene HotKeyID übergeben, wenn eine HotKey Kombination gedrückt wurde.
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''' </summary>
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Public Event HotKeyPressed(HotKeyID As String)
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''' <summary>
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''' Definiert verfügbare Modfier Keys
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''' </summary>
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Public Enum ModfierKey As Integer
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MOD_ALT = 1
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MOD_CONTROL = 2
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MOD_SHIFT = 4
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MOD_WIN = 8
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End Enum
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Sub New(pOwnerForm As Form)
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_OwnerForm = pOwnerForm
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Application.AddMessageFilter(Me)
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End Sub
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''' <summary>
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''' Diese Funktion fügt einen Hotkey hinzu und registriert ihn auch sofort
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''' </summary>
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''' <param name="pKeyCode">Den KeyCode für die Taste</param>
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''' <param name="pModifiers">Die Zusatztasten wie z.B. Strg oder Alt, diese können auch mit OR kombiniert werden</param>
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''' <param name="pHotKeyID">Die ID die der Hotkey bekommen soll um diesen zu identifizieren</param>
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Public Sub AddHotKey(pKeyCode As Keys, pModifiers As ModfierKey, pHotKeyID As Integer)
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If _HotkeyIDList.ContainsKey(pHotKeyID) = True Then
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Exit Sub
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End If
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Dim oHotkeyId As Short = NativeMethods.GlobalAddAtom(pHotKeyID.ToString())
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_HotkeyList.Add(oHotkeyId, New HotKeyObject(pKeyCode, pModifiers, pHotKeyID))
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NativeMethods.RegisterHotKey(_OwnerForm.Handle, oHotkeyId, _HotkeyList(oHotkeyId).Modifier, _HotkeyList(oHotkeyId).HotKey)
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End Sub
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''' <summary>
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''' Diese Funktion entfernt einen Hotkey und deregistriert ihn auch sofort
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''' </summary>
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''' <param name="pHotKeyID">Gibt die HotkeyID an welche entfernt werden soll</param>
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Public Sub RemoveHotKey(ByVal pHotKeyID As Integer)
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If _HotkeyIDList.ContainsKey(pHotKeyID) = False Then
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Exit Sub
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End If
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Dim oHotkeyId As Short = _HotkeyIDList(pHotKeyID)
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_HotkeyIDList.Remove(pHotKeyID)
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_HotkeyList.Remove(oHotkeyId)
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NativeMethods.UnregisterHotKey(_OwnerForm.Handle, CInt(oHotkeyId))
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NativeMethods.GlobalDeleteAtom(oHotkeyId)
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End Sub
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Private Function PreFilterMessage(ByRef m As Message) As Boolean Implements IMessageFilter.PreFilterMessage
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If m.Msg = NativeMethods.WM_HOTKEY Then
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If Clipboard.GetText().Trim() <> String.Empty Then
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RaiseEvent HotKeyPressed(_HotkeyList(CShort(m.WParam)).HotKeyID)
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End If
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End If
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Return False
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End Function
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Public Class HotKeyObject
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Public Property HotKey As Keys
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Public Property Modifier As ModfierKey
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Public Property HotKeyID As Integer
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Public Property AtomID As Short
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Sub New(NewHotKey As Keys, NewModifier As ModfierKey, NewHotKeyID As Integer)
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HotKey = NewHotKey
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Modifier = NewModifier
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HotKeyID = NewHotKeyID
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End Sub
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End Class
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End Class
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