Add GetProcessNameFromHwnd

Author: Jack251970

src/Win32Helper.cs

@@ -1,5 +1,6 @@
 using Microsoft.Win32.SafeHandles;
 using System;
+using System.IO;
 using Windows.Win32;
 using Windows.Win32.Foundation;
 using Windows.Win32.System.Threading;
@@ -8,16 +9,21 @@ namespace Flow.Launcher.Plugin.DialogJump.Files;
 
 public static class Win32Helper
 {
+    internal static unsafe string GetProcessNameFromHwnd(HWND hWnd)
+    {
+        return Path.GetFileName(GetProcessPathFromHwnd(hWnd));
+    }
+
     internal static unsafe string GetProcessPathFromHwnd(HWND hWnd)
     {
         uint pid;
-        uint threadId = PInvoke.GetWindowThreadProcessId(hWnd, &pid);
+        var threadId = PInvoke.GetWindowThreadProcessId(hWnd, &pid);
         if (threadId == 0) return string.Empty;
 
-        HANDLE process = PInvoke.OpenProcess(PROCESS_ACCESS_RIGHTS.PROCESS_QUERY_LIMITED_INFORMATION, false, pid);
+        var process = PInvoke.OpenProcess(PROCESS_ACCESS_RIGHTS.PROCESS_QUERY_LIMITED_INFORMATION, false, pid);
         if (process != HWND.Null)
         {
-            using SafeProcessHandle safeHandle = new((nint)process.Value, true);
+            using var safeHandle = new SafeProcessHandle((nint)process.Value, true);
             uint capacity = 2000;
             Span<char> buffer = new char[capacity];
             if (!PInvoke.QueryFullProcessImageName(safeHandle, PROCESS_NAME_FORMAT.PROCESS_NAME_WIN32, buffer, ref capacity))