public static void Register(KeyboardShortcutAction action)
{
if (RegisteredActions.ContainsKey(action.Id))
{
Unregister(action.Id);
}
var win32Key = KeyInterop.VirtualKeyFromKey(action.Shortcut.Key);
// Modifier keys codes: Alt = 1, Ctrl = 2, Shift = 4, Win = 8
// Compute the addition of each combination of the keys you want to be pressed
// ALT+CTRL = 1 + 2 = 3 , CTRL+SHIFT = 2 + 4 = 6...
if (!RegisterHotKey(App.Handler, action.Id, action.Modifiers(), (int)win32Key))
{
MessageBox.Show($"Cannot use hotkey {action.Shortcut.ToString()}, probably windows or other application is using it.");
}
RegisteredActions[action.Id] = action;
}
private static IntPtr KeyboardHookHandler(int nCode, IntPtr wParam, ref KBHookStruct lParam)
{
if (nCode == 0)
{
var wpfKey = KeyInterop.KeyFromVirtualKey(lParam.vkCode);
var wparamTyped = wParam.ToInt32();
if (Enum.IsDefined(typeof(KeyboardState), wparamTyped))
{
var isKeyDown = false;
if (wparamTyped == (int)KeyboardState.WM_KEYDOWN || wparamTyped == (int)KeyboardState.WM_SYSKEYDOWN)
{
isKeyDown = true;
if (!CurrentlyPressedKeys.Contains(wpfKey))
{
CurrentlyPressedKeys.Add(wpfKey);
}
}
else if (CurrentlyPressedKeys.Contains(wpfKey))
{
CurrentlyPressedKeys.Remove(wpfKey);
}
else
{
var aaa = wparamTyped;
}
var key = new KeyboardShortcut(wpfKey)
{
CtrlModifier = CurrentlyPressedKeys.Contains(Key.LeftCtrl) || CurrentlyPressedKeys.Contains(Key.LeftCtrl),
ShiftModifier = CurrentlyPressedKeys.Contains(Key.LeftShift) || CurrentlyPressedKeys.Contains(Key.RightShift),
AltModifier = CurrentlyPressedKeys.Contains(Key.LeftAlt) || CurrentlyPressedKeys.Contains(Key.RightAlt),
WinModifier = CurrentlyPressedKeys.Contains(Key.LWin) || CurrentlyPressedKeys.Contains(Key.RWin)
};
var keyEvent = new KeyEvent(key);
if (HandlerControls != null)
{
foreach (var control in HandlerControls)
{
if (control.CanHandleHook)
{
control.HandleHook(keyEvent);
if (keyEvent.Handled)
{
break;
}
}
}
}
if (keyEvent.Handled)
{
return(new IntPtr(1));
}
else if (!keyEvent.Handled && isKeyDown)
{
KeyboardShortcutAction action = HotKeyManager.CallActionIfRegistered(key);
if (action != null)
{
return(new IntPtr(1));
}
}
}
}
return(CallNextHookEx(CurrentHook, nCode, wParam, ref lParam));
}