Replace `DllImport` usage with `LibraryImport` (#4084)

* Replace usage of `DllImport` with `LibraryImport`

* Mark methods as `partial`

* Marshalling

* More `partial` & marshalling

* More `partial` and marshalling

* More partial and marshalling

* Update GdiPlusHelper to LibraryImport

* Unicorn

* More Partial

* Marshal

* Specify EntryPoint

* Specify EntryPoint

* Change GlobalMemoryStatusEx to LibraryImport

* Change RegisterClassEx to LibraryImport

* Define EntryPoints

* Update Ryujinx.Ava/Ui/Controls/Win32NativeInterop.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Graphics.Nvdec.FFmpeg/Native/FFmpegApi.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Move return mashal

* Remove calling convention specification

* Remove calling conventions

* Update Ryujinx.Common/SystemInfo/WindowsSystemInfo.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx/Modules/Updater/Updater.cs

Co-authored-by: Mary-nyan <thog@protonmail.com>

* Update Ryujinx.Ava/Modules/Updater/Updater.cs

Co-authored-by: Mary-nyan <thog@protonmail.com>

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>
Co-authored-by: Mary-nyan <thog@protonmail.com>

1 files changed, 0 insertions, 76 deletions

diff --git a/Ryujinx.Common/System/GdiPlusHelper.cs b/Ryujinx.Common/System/GdiPlusHelper.cs
deleted file mode 100644
index c084c651..00000000
--- a/Ryujinx.Common/System/GdiPlusHelper.cs
+++ /dev/null
@@ -1,76 +0,0 @@
-using System;
-using System.Runtime.InteropServices;
-using System.Runtime.Versioning;
-
-namespace Ryujinx.Common.System
-{
-    [SupportedOSPlatform("windows")]
-    public static class GdiPlusHelper
-    {
-        private const string LibraryName = "gdiplus.dll";
-
-        private static readonly IntPtr _initToken;
-
-        static GdiPlusHelper()
-        {
-            CheckStatus(GdiplusStartup(out _initToken, StartupInputEx.Default, out _));
-        }
-
-        private static void CheckStatus(int gdiStatus)
-        {
-            if (gdiStatus != 0)
-            {
-                throw new Exception($"GDI Status Error: {gdiStatus}");
-            }
-        }
-
-        private struct StartupInputEx
-        {
-            public int GdiplusVersion;
-
-#pragma warning disable CS0649
-            public IntPtr DebugEventCallback;
-            public int SuppressBackgroundThread;
-            public int SuppressExternalCodecs;
-            public int StartupParameters;
-#pragma warning restore CS0649
-
-            public static StartupInputEx Default => new StartupInputEx
-            {
-                // We assume Windows 8 and upper
-                GdiplusVersion = 2,
-                DebugEventCallback = IntPtr.Zero,
-                SuppressBackgroundThread = 0,
-                SuppressExternalCodecs = 0,
-                StartupParameters = 0,
-            };
-        }
-
-        private struct StartupOutput
-        {
-            public IntPtr NotificationHook;
-            public IntPtr NotificationUnhook;
-        }
-
-        [DllImport(LibraryName)]
-        private static extern int GdiplusStartup(out IntPtr token, in StartupInputEx input, out StartupOutput output);
-
-        [DllImport(LibraryName)]
-        private static extern int GdipCreateFromHWND(IntPtr hwnd, out IntPtr graphics);
-
-        [DllImport(LibraryName)]
-        private static extern int GdipDeleteGraphics(IntPtr graphics);
-
-        [DllImport(LibraryName)]
-        private static extern int GdipGetDpiX(IntPtr graphics, out float dpi);
-
-        public static float GetDpiX(IntPtr hwnd)
-        {
-            CheckStatus(GdipCreateFromHWND(hwnd, out IntPtr graphicsHandle));
-            CheckStatus(GdipGetDpiX(graphicsHandle, out float result));
-            CheckStatus(GdipDeleteGraphics(graphicsHandle));
-
-            return result;
-        }
-    }
-}