More elegant way to get win32 last error as string

Author: Slion

Project/Hid/HidUtils.cs

@@ -19,6 +19,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 using System.Text;
 
 
@@ -119,5 +120,25 @@ public static T ToEnum<T>(this int value)
         }
 
     }
+}
+
+//TODO: Move this to SharpLib.Win32 v2
+namespace SharpLib.Win32
+{
+    using SharpLib.ToEnum;
+    using Windows.Win32.Foundation;
+    public static class GetLastError
+    {
+        public static string String()
+        {
+            return Enum().ToString();
+        }
 
+        public static WIN32_ERROR Enum()
+        {
+            int err = Marshal.GetLastWin32Error();
+            return err.ToEnum<WIN32_ERROR>();
+        }
+
+    }
 }

Project/HidDemo/MainForm.cs

@@ -315,8 +315,7 @@ public unsafe static bool OpenPropertiesDialog(string aDevicePath)
             SetupDiDestroyDeviceInfoListSafeHandle hDevInfo = PInvoke.SetupDiGetClassDevs(null, (string)null, new HWND(0), Extra.Const.DIGCF_ALLCLASSES | Extra.Const.DIGCF_PRESENT);
             if (hDevInfo.IsInvalid)
             {
-                int err = Marshal.GetLastWin32Error();
-                Trace.WriteLine("SetupDiGetClassDevs error: " + err.ToEnum<WIN32_ERROR>());
+                Trace.WriteLine("SetupDiGetClassDevs error: " + GetLastError.String());
                 return false;
             }
 
@@ -349,11 +348,7 @@ public unsafe static bool OpenPropertiesDialog(string aDevicePath)
                 keepGoing = PInvoke.SetupDiEnumDeviceInterfaces(hDevInfo, null, null, index, &deviceInterfaceData);
                 if (!keepGoing)
                 {
-                    int err = Marshal.GetLastWin32Error();
-                    
-                    Trace.WriteLine("SetupDiEnumDeviceInterfaces error: " + err.ToEnum<WIN32_ERROR>());
-
-                    //Debug.Print(Marshal.GetLastWin32Error().ToString());
+                    Trace.WriteLine("SetupDiEnumDeviceInterfaces error: " + GetLastError.String());
                     break;
                 }