A bit of refactoring to be able to find some issue...

GreenshotPlugin/UnmanagedHelpers/Enums/Win32Error.cs

@@ -0,0 +1,67 @@
+namespace GreenshotPlugin.UnmanagedHelpers.Enums
+{
+    /// <summary>
+    /// A Win32 error code.
+    /// </summary>
+    public enum Win32Error : uint {
+        Success = 0x0,
+        InvalidFunction = 0x1,
+        FileNotFound = 0x2,
+        PathNotFound = 0x3,
+        TooManyOpenFiles = 0x4,
+        AccessDenied = 0x5,
+        InvalidHandle = 0x6,
+        ArenaTrashed = 0x7,
+        NotEnoughMemory = 0x8,
+        InvalidBlock = 0x9,
+        BadEnvironment = 0xa,
+        BadFormat = 0xb,
+        InvalidAccess = 0xc,
+        InvalidData = 0xd,
+        OutOfMemory = 0xe,
+        InvalidDrive = 0xf,
+        CurrentDirectory = 0x10,
+        NotSameDevice = 0x11,
+        NoMoreFiles = 0x12,
+        WriteProtect = 0x13,
+        BadUnit = 0x14,
+        NotReady = 0x15,
+        BadCommand = 0x16,
+        Crc = 0x17,
+        BadLength = 0x18,
+        Seek = 0x19,
+        NotDosDisk = 0x1a,
+        SectorNotFound = 0x1b,
+        OutOfPaper = 0x1c,
+        WriteFault = 0x1d,
+        ReadFault = 0x1e,
+        GenFailure = 0x1f,
+        SharingViolation = 0x20,
+        LockViolation = 0x21,
+        WrongDisk = 0x22,
+        SharingBufferExceeded = 0x24,
+        HandleEof = 0x26,
+        HandleDiskFull = 0x27,
+        NotSupported = 0x32,
+        RemNotList = 0x33,
+        DupName = 0x34,
+        BadNetPath = 0x35,
+        NetworkBusy = 0x36,
+        DevNotExist = 0x37,
+        TooManyCmds = 0x38,
+        FileExists = 0x50,
+        CannotMake = 0x52,
+        AlreadyAssigned = 0x55,
+        InvalidPassword = 0x56,
+        InvalidParameter = 0x57,
+        NetWriteFault = 0x58,
+        NoProcSlots = 0x59,
+        TooManySemaphores = 0x64,
+        ExclSemAlreadyOwned = 0x65,
+        SemIsSet = 0x66,
+        TooManySemRequests = 0x67,
+        InvalidAtInterruptTime = 0x68,
+        SemOwnerDied = 0x69,
+        SemUserLimit = 0x6a
+    }
+}