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Use PInvoke instead of DllImport & Several adjustments

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This commit is contained in:
Jack251970 2025-03-22 12:06:44 +08:00
parent aa3ad10044
commit 023ab45022
4 changed files with 87 additions and 92 deletions
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7
Flow.Launcher.Infrastructure/NativeMethods.txt
View file

@ -46,4 +46,9 @@ GetMonitorInfo
MONITORINFOEXW
WM_ENTERSIZEMOVE
WM_EXITSIZEMOVE
WM_EXITSIZEMOVE
GetKeyboardLayout
GetWindowThreadProcessId
ActivateKeyboardLayout
GetKeyboardLayoutList

79
Flow.Launcher.Infrastructure/Win32Helper.cs
View file

@ -1,5 +1,6 @@
using System;
using System.ComponentModel;
using System.Linq;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
@ -7,8 +8,10 @@ using System.Windows.Media;
using Windows.Win32;
using Windows.Win32.Foundation;
using Windows.Win32.Graphics.Dwm;
using Windows.Win32.UI.Input.KeyboardAndMouse;
using Windows.Win32.UI.WindowsAndMessaging;
using Flow.Launcher.Infrastructure.UserSettings;
using Point = System.Windows.Point;
namespace Flow.Launcher.Infrastructure
{
@ -317,5 +320,81 @@ namespace Flow.Launcher.Infrastructure
}
#endregion
#region Keyboard Layout
// https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/70feba9f-294e-491e-b6eb-56532684c37f
private static readonly uint[] EnglishLanguageIds =
{
0x0009, 0x0409, 0x0809, 0x0C09, 0x1000, 0x1009, 0x1409, 0x1809, 0x1C09, 0x2009, 0x2409, 0x2809, 0x2C09,
0x3009, 0x3409, 0x3C09, 0x4009, 0x4409, 0x4809, 0x4C09,
};
// Store the previous keyboard layout
private static HKL _previousLayout;
private static unsafe HKL FindEnglishKeyboardLayout()
{
// Get the number of keyboard layouts
int count = PInvoke.GetKeyboardLayoutList(0, null);
if (count <= 0) return HKL.Null;
// Get all keyboard layouts
var handles = new HKL[count];
fixed (HKL* h = handles)
{
_ = PInvoke.GetKeyboardLayoutList(count, h);
}
// Look for any English keyboard layout
foreach (var hkl in handles)
{
// The lower word contains the language identifier
var langId = (uint)hkl.Value & 0xFFFF;
// Check if it's an English layout
if (EnglishLanguageIds.Contains(langId))
{
return hkl;
}
}
return HKL.Null;
}
public static unsafe void SetEnglishKeyboardLayout(bool backupPrevious)
{
// Find an installed English layout
var enHKL = FindEnglishKeyboardLayout();
// No installed English layout found
if (enHKL == HKL.Null) return;
// Get the current window thread ID
uint threadId = 0;
var result = PInvoke.GetWindowThreadProcessId(PInvoke.GetForegroundWindow(), &threadId);
if (result == 0 || threadId == 0) throw new Win32Exception(Marshal.GetLastWin32Error());
// Backup current keyboard layout
if (backupPrevious)
{
_previousLayout = PInvoke.GetKeyboardLayout(threadId);
}
// Switch to English layout
PInvoke.ActivateKeyboardLayout(enHKL, 0);
}
public static void SetPreviousKeyboardLayout()
{
if (_previousLayout != HKL.Null)
{
PInvoke.ActivateKeyboardLayout(_previousLayout, 0);
_previousLayout = HKL.Null;
}
}
#endregion
}
}

88
Flow.Launcher/Helper/KeyboardLayoutHelper.cs
View file

@ -1,88 +0,0 @@
using System;
using System.Linq;
using System.Runtime.InteropServices;
namespace Flow.Launcher.Helper;
public static class KeyboardLayoutHelper
{
#region Windows API
[DllImport("user32.dll")]
private static extern IntPtr GetKeyboardLayout(uint idThread);
[DllImport("user32.dll")]
private static extern uint GetWindowThreadProcessId(IntPtr hWnd, IntPtr lpdwProcessId);
[DllImport("user32.dll")]
private static extern IntPtr ActivateKeyboardLayout(IntPtr hkl, uint flags);
[DllImport("user32.dll")]
private static extern int GetKeyboardLayoutList(int nBuff, [Out] IntPtr[] lpList);
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
// https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/70feba9f-294e-491e-b6eb-56532684c37f
private static readonly uint[] EnglishLanguageIds =
{
0x0009, 0x0409, 0x0809, 0x0C09, 0x1000, 0x1009, 0x1409, 0x1809, 0x1C09, 0x2009, 0x2409, 0x2809, 0x2C09,
0x3009, 0x3409, 0x3C09, 0x4009, 0x4409, 0x4809, 0x4C09,
};
private static IntPtr FindEnglishKeyboardLayout()
{
// Get the number of keyboard layouts
var count = GetKeyboardLayoutList(0, null);
if (count <= 0) return IntPtr.Zero;
// Get all keyboard layouts
var keyboardLayouts = new IntPtr[count];
GetKeyboardLayoutList(count, keyboardLayouts);
// Look for any English keyboard layout
foreach (var layout in keyboardLayouts)
{
// The lower word contains the language identifier
var langId = (uint)layout.ToInt32() & 0xFFFF;
// Check if it's an English layout
if (EnglishLanguageIds.Contains(langId))
{
return layout;
}
}
return IntPtr.Zero;
}
#endregion
// Query textbox keyboard layout
private static IntPtr _previousLayout;
public static void SetEnglishKeyboardLayout()
{
// Find an installed English layout
var englishLayout = FindEnglishKeyboardLayout();
// No installed English layout found
if (englishLayout == IntPtr.Zero) return;
var hwnd = GetForegroundWindow();
var threadId = GetWindowThreadProcessId(hwnd, IntPtr.Zero);
// Store current keyboard layout
_previousLayout = GetKeyboardLayout(threadId) & 0xFFFF;
// Switch to English layout
ActivateKeyboardLayout(englishLayout, 0);
}
public static void SetPreviousKeyboardLayout()
{
if (_previousLayout == IntPtr.Zero) return;
ActivateKeyboardLayout(_previousLayout, 0);
_previousLayout = IntPtr.Zero;
}
}

5
Flow.Launcher/ViewModel/MainViewModel.cs
View file

@ -14,7 +14,6 @@ using System.Windows.Threading;
using CommunityToolkit.Mvvm.DependencyInjection;
using CommunityToolkit.Mvvm.Input;
using Flow.Launcher.Core.Plugin;
using Flow.Launcher.Helper;
using Flow.Launcher.Infrastructure;
using Flow.Launcher.Infrastructure.Hotkey;
using Flow.Launcher.Infrastructure.Image;
@ -1377,7 +1376,7 @@ namespace Flow.Launcher.ViewModel
if (StartWithEnglishMode)
{
KeyboardLayoutHelper.SetEnglishKeyboardLayout();
Win32Helper.SetEnglishKeyboardLayout(true);
}
});
}
@ -1450,7 +1449,7 @@ namespace Flow.Launcher.ViewModel
if (StartWithEnglishMode)
{
KeyboardLayoutHelper.SetPreviousKeyboardLayout();
Win32Helper.SetPreviousKeyboardLayout();
}
await Task.Delay(50);