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, 35 insertions, 0 deletions

diff --git a/Ryujinx.Common/SystemInterop/DisplaySleep.cs b/Ryujinx.Common/SystemInterop/DisplaySleep.cs
new file mode 100644
index 00000000..5a1f66f5
--- /dev/null
+++ b/Ryujinx.Common/SystemInterop/DisplaySleep.cs
@@ -0,0 +1,35 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Common.SystemInterop
+{
+    public partial class DisplaySleep
+    {
+        [Flags]
+        enum EXECUTION_STATE : uint
+        {
+            ES_CONTINUOUS = 0x80000000,
+            ES_DISPLAY_REQUIRED = 0x00000002,
+            ES_SYSTEM_REQUIRED = 0x00000001
+        }
+
+        [LibraryImport("kernel32.dll", SetLastError = true)]
+        private static partial EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
+
+        static public void Prevent()
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS | EXECUTION_STATE.ES_SYSTEM_REQUIRED | EXECUTION_STATE.ES_DISPLAY_REQUIRED);
+            }
+        }
+        
+        static public void Restore()
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS);  
+            }
+        }
+    }
+}