Capture shortcuts

kmpm · Feb 8, 2022 · 3edada0 · 3edada0
1 parent 8cf9e82
commit 3edada0
Show file tree

Hide file tree

Showing 4 changed files with 26 additions and 9 deletions.
diff --git a/KeyNStroke/AnnotateLine.xaml.cs b/KeyNStroke/AnnotateLine.xaml.cs
@@ -59,15 +59,17 @@ private void Window_Loaded(object sender, RoutedEventArgs e)
         void m_KeystrokeEvent(KeystrokeEventArgs e)
         {
             string pressed = e.ShortcutIdentifier();
-            CheckForTrigger(pressed);
+            e.raw.preventDefault = e.raw.preventDefault || CheckForTrigger(pressed);
         }
 
-        private void CheckForTrigger(string pressed)
+        private bool CheckForTrigger(string pressed)
         {
             if (AnnotateLineShortcut != null && pressed == AnnotateLineShortcut)
             {
                 nextClickDraws = true;
+                return true;
             }
+            return false;
         }
 
         public void SetAnnotateLineShortcut(string shortcut)

diff --git a/KeyNStroke/KeyboardHook.cs b/KeyNStroke/KeyboardHook.cs
@@ -129,10 +129,19 @@ private IntPtr HookCallback(int nCode,
                     String.Format("Key: sc {0} vk {1} ext {2} fl {3}, {4}", lParam.scanCode,
                         lParam.vkCode, lParam.dwExtraInfo, lParam.flags, e.Method));
                 */
+                if (e.preventDefault)
+                {
+                    return IntPtr.Add(IntPtr.Zero, 1);
+                } else
+                {
+                    return NativeMethodsKeyboard.CallNextHookEx(hookID, nCode, wParam, ref lParam);
+                }
+            }
+            else
+            {
+                //Pass key to next application
+                return NativeMethodsKeyboard.CallNextHookEx(hookID, nCode, wParam, ref lParam);
             }
-            //Pass key to next application
-            IntPtr ret = NativeMethodsKeyboard.CallNextHookEx(hookID, nCode, wParam, ref lParam);
-            return ret;
         }
 
         /// <summary>

diff --git a/KeyNStroke/KeyboardRawEvent.cs b/KeyNStroke/KeyboardRawEvent.cs
@@ -46,6 +46,8 @@ public class KeyboardRawEventArgs
         public NativeMethodsKeyboard.KBDLLHOOKSTRUCT Kbdllhookstruct;
         public byte[] keyState; // 256 bytes
 
+        public bool preventDefault = false;
+
         public KeyboardRawEventArgs(NativeMethodsKeyboard.KBDLLHOOKSTRUCT Kbdllhookstruct)
         {
             this.Kbdllhookstruct = Kbdllhookstruct;

diff --git a/KeyNStroke/KeystrokeDisplay.xaml.cs b/KeyNStroke/KeystrokeDisplay.xaml.cs
@@ -102,8 +102,8 @@ void InitPeriodicTopmostTimer()
         void KeystrokeEvent(KeystrokeEventArgs e)
         {
             string pressed = e.ShortcutIdentifier();
-            CheckForSettingsMode(pressed);
-            CheckForPasswordMode(pressed);
+            e.raw.preventDefault = e.raw.preventDefault || CheckForSettingsMode(pressed);
+            e.raw.preventDefault = e.raw.preventDefault || CheckForPasswordMode(pressed);
 
             if (PasswordModeActivated || settings.EnablePasswordMode)
             {
@@ -384,12 +384,14 @@ public static bool ValidateShortcutSetting(string shortcut)
             return true;
         }
 
-        private void CheckForSettingsMode(string pressed)
+        private bool CheckForSettingsMode(string pressed)
         {
             if (SettingsModeShortcut != null && pressed == SettingsModeShortcut)
             {
                 settings.EnableSettingsMode = !settings.EnableSettingsMode;
+                return true;
             }
+            return false;
         }
 
         bool SettingsModeActivated = false;
@@ -471,12 +473,14 @@ public void SetPasswordModeShortcut(string shortcut)
         }
 
 
-        private void CheckForPasswordMode(string pressed)
+        private bool CheckForPasswordMode(string pressed)
         {
             if (PasswordModeShortcut != null && pressed == PasswordModeShortcut)
             {
                 settings.EnablePasswordMode = !settings.EnablePasswordMode;
+                return true;
             }
+            return false;
         }