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// Copyright © 2017 Paddy Xu
//
// This file is part of QuickLook program.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace QuickLook.NativeMethods
{
internal static class QuickLook
{
private const int MaxPath = 8192;
[DllImport("QuickLook.Native32.dll", EntryPoint = "Init",
CallingConvention = CallingConvention.Cdecl)]
private static extern void Init_32();
[DllImport("QuickLook.Native32.dll", EntryPoint = "GetFocusedWindowType",
CallingConvention = CallingConvention.Cdecl)]
private static extern FocusedWindowType GetFocusedWindowTypeNative_32();
[DllImport("QuickLook.Native32.dll", EntryPoint = "GetCurrentSelection",
CallingConvention = CallingConvention.Cdecl)]
private static extern void GetCurrentSelectionNative_32([MarshalAs(UnmanagedType.LPWStr)] StringBuilder sb);
[DllImport("QuickLook.Native64.dll", EntryPoint = "Init",
CallingConvention = CallingConvention.Cdecl)]
private static extern void Init_64();
[DllImport("QuickLook.Native64.dll", EntryPoint = "GetFocusedWindowType",
CallingConvention = CallingConvention.Cdecl)]
private static extern FocusedWindowType GetFocusedWindowTypeNative_64();
[DllImport("QuickLook.Native64.dll", EntryPoint = "GetCurrentSelection",
CallingConvention = CallingConvention.Cdecl)]
private static extern void GetCurrentSelectionNative_64([MarshalAs(UnmanagedType.LPWStr)] StringBuilder sb);
internal static void Init()
{
try
{
if (App.Is64Bit)
Init_64();
else
Init_32();
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
internal static FocusedWindowType GetFocusedWindowType()
{
try
{
return App.Is64Bit ? GetFocusedWindowTypeNative_64() : GetFocusedWindowTypeNative_32();
}
catch (Exception e)
{
Debug.WriteLine(e);
return FocusedWindowType.Invalid;
}
}
internal static string GetCurrentSelection()
{
StringBuilder sb = null;
try
{
// communicate with COM in a separate thread
Task.Run(() =>
{
sb = new StringBuilder(MaxPath);
if (App.Is64Bit)
GetCurrentSelectionNative_64(sb);
else
GetCurrentSelectionNative_32(sb);
}).Wait();
}
catch (Exception e)
{
Debug.WriteLine(e);
}
return sb?.ToString() ?? string.Empty;
}
internal enum FocusedWindowType
{
Invalid,
Desktop,
Explorer,
Dialog
}
}
}