keyboard introp

2024-01-04 22:27:54 +00:00
parent d45076f2a9
commit df60262349
6 changed files with 102 additions and 2 deletions
@@ -0,0 +1,84 @@
+using System;
+using System.Linq;
+using System.Runtime.InteropServices;
+using Windows.System;
+using Windows.Win32;
+using Windows.Win32.UI.KeyboardAndMouseInput;
+
+namespace Hyperbar.Desktop.Win32;
+
+public class KeyIntrop
+{
+    private static readonly VirtualKey[] ExtendedKeys = [
+        VirtualKey.Menu,
+        VirtualKey.Menu,
+        VirtualKey.NumberKeyLock,
+        VirtualKey.Insert,
+        VirtualKey.Delete,
+        VirtualKey.Home,
+        VirtualKey.End,
+        VirtualKey.Up,
+        VirtualKey.Down,
+        VirtualKey.Left,
+        VirtualKey.Right,
+        VirtualKey.Application,
+        VirtualKey.RightWindows,
+        VirtualKey.LeftWindows ];
+
+    public static void Press(VirtualKey key) => SendKey(key, true);
+
+    public static void Release(VirtualKey key) => SendKey(key, false);
+
+
+    public static unsafe void Type(VirtualKey key, 
+        params VirtualKey[] modifierKeys)
+    {
+        foreach (VirtualKey modiferKey in modifierKeys)
+        {
+            Press(modiferKey);
+        }
+
+        Press(key);
+        Release(key);
+
+        foreach (VirtualKey modifierKey in modifierKeys.Reverse())
+        {
+            Release(modifierKey);
+        }
+    }
+
+    private static unsafe void SendKey(VirtualKey key, 
+        bool pressed)
+    {
+        INPUT input = new()
+        {
+            type = INPUT_TYPE.INPUT_KEYBOARD
+        };
+
+        input.Anonymous.ki.wVk = (ushort)key;
+        input.Anonymous.ki.wScan = (ushort)PInvoke.MapVirtualKey(input.Anonymous.ki.wVk, 0);
+
+        KEYBD_EVENT_FLAGS flags = 0;
+
+        if (input.Anonymous.ki.wScan > 0)
+        {
+            flags |= KEYBD_EVENT_FLAGS.KEYEVENTF_SCANCODE;
+        }
+
+        if (!pressed)
+        {
+            flags |= KEYBD_EVENT_FLAGS.KEYEVENTF_KEYUP;
+        }
+
+        if (ExtendedKeys.Contains(key))
+        {
+            flags |= KEYBD_EVENT_FLAGS.KEYEVENTF_EXTENDEDKEY;
+        }
+
+        input.Anonymous.ki.dwFlags = flags;
+        input.Anonymous.ki.time = 0;
+        input.Anonymous.ki.dwExtraInfo = new nuint();
+
+        PInvoke.SendInput(new Span<INPUT>(ref input), Marshal.SizeOf(input));
+    }
+}