c# - 除特定程序外，如何注册 Windows 全局热键？

Question

问题

我创建了一个“Foo”WPF 应用程序，只要在 Windows 10 操作系统的任何位置按下热键 ctrl + shift + 空格键，它就会显示其主窗口。这工作正常。

现在，出现了问题。使用 Visual Studio (2019)，快捷键之一也是 ctrl + shift + 空格键（当光标位于方法括号之间时显示重载参数）。在使用 VS 时按下此热键时，将显示“Foo”窗口而不是重载参数列表。

因此，我想在 Visual Studio 的“Foo”应用程序中创建一个例外，以便在 Visual Studio 中按下此热键时，显示重载参数，而不是“Foo”应用程序。实现这一目标的最佳方法是什么？是否有一个特殊的 RegisterHotkey 参数可以做到这一点，或者在“Foo”窗口出现之前检查活动窗口是否是 VS 更好？谢谢。

当前工作应用程序的代码片段

Imports System.Windows.Interop
Imports System.Runtime.InteropServices

Public Class Hotkey

Public Const WM_HOTKEY As Integer = &H312

Enum KeyModifier
    None = 0
    Alt = &H1
    Control = &H2
    Shift = &H4
    Winkey = &H8
End Enum

Public NotInheritable Class User32
    Private Sub New()
    End Sub
    <DllImport("user32.dll")>
    Friend Shared Function RegisterHotKey(hWnd As IntPtr, id As Integer, fsModifiers As ModifierKeys, vk As RecentWorkFolders.Keys.Keys) As Boolean
    End Function

    <DllImport("user32.dll")>
    Friend Shared Function UnregisterHotKey(hWnd As IntPtr, id As Integer) As Boolean
    End Function
End Class

<Flags>
Public Enum Modifiers
    NoMod = &H0
    Alt = &H1
    Ctrl = &H2
    Shift = &H4
    Win = &H8
End Enum

Public Sub InitializeHotkey()

    Dim windowHandle As IntPtr = New WindowInteropHelper(MainWindowInstance).Handle
    Dim result As Boolean = User32.RegisterHotKey(windowHandle, 1, ModifierKeys.Control Or ModifierKeys.Shift, RecentWorkFolders.Keys.Keys.Space)

End Sub

Public Sub HookWndProc(window As Visual)
    Dim source = TryCast(PresentationSource.FromVisual(window), HwndSource)
    If source Is Nothing Then
        Console.WriteLine("Could not create hWnd source from window.")
    End If
    source.AddHook(AddressOf WndProc)

End Sub


Private Function WndProc(hwnd As IntPtr, msg As Integer, wParam As IntPtr, lParam As IntPtr, ByRef handled As Boolean) As IntPtr

    If msg = &H312 Then
        handleHotKeyEvent(wParam)
    End If

    Return IntPtr.Zero
End Function


Public Sub handleHotKeyEvent(ByVal hotkeyID As IntPtr)
    Select Case hotkeyID
        Case 1
            IsWindowShown = False
            Initialize()
            ShowWindow()
    End Select
End Sub

结束类

标签： c#vb.net