/// <summary>
/// Registers the hotkey.
/// </summary>
/// <param name="modifier">Hotkey modifier.</param>
/// <param name="key">Hotkey key.</param>
private void RegisterGlobalHotkey(KeyModifier modifier, System.Windows.Forms.Keys key)
{
UnregisterGlobalHotkey();
try
{
// use the GlobalAddAtom API to get a unique ID (as suggested by MSDN)
string atomName = Thread.CurrentThread.ManagedThreadId.ToString("X8") + this.GetType().FullName;
ID = GlobalAddAtom(atomName);
if (ID == 0)
{
throw new Exception("Unable to generate unique hotkey ID. Error: " + Marshal.GetLastWin32Error().ToString());
}
// register the hotkey, throw if any error
if (!RegisterHotKey(this.Helper.Handle, ID, (uint)modifier, (uint)key))
{
throw new Exception("Unable to register hotkey. Error: " + Marshal.GetLastWin32Error().ToString());
}
Key = key;
Modifiers = modifier;
GlobalHotkey.RegisterNewHotkey(this);
}
catch (Exception ex)
{
// clean up if hotkey registration failed
Dispose();
Console.WriteLine(ex);
}
}
/// <summary>
/// Registers a hotkey to the global message receiving queue.
/// </summary>
/// <param name="hotKey">Hot key to register.</param>
internal static void RegisterNewHotkey(GlobalHotkey hotKey)
{
if (hotKey != null && hotKey.ID != 0)
{
_registeredHotkeys[hotKey.ID] = hotKey;
}
}
/// <summary>
/// Unregisters this global key.
/// </summary>
private void UnregisterGlobalHotkey()
{
if (this.ID != 0)
{
GlobalHotkey.UnregisterHotkey(this);
UnregisterHotKey(this.Helper.Handle, ID);
// clean up the atom list
GlobalDeleteAtom(ID);
ID = 0;
Key = System.Windows.Forms.Keys.None;
Modifiers = KeyModifier.None;
}
}
/// <summary>
/// Initializes a new instance of the HotkeyEventArgs class with a global hotkey.
/// </summary>
/// <param name="hotkey">Hotkey being the source of the event.</param>
public HotkeyEventArgs(GlobalHotkey hotkey)
{
Hotkey = hotkey;
}
/// <summary>
/// Initializes a new instance of the HotkeyEventArgs class with a global hotkey.
/// </summary>
/// <param name="hotkey">Hotkey being the source of the event.</param>
public HotkeyEventArgs(GlobalHotkey hotkey)
{
Hotkey = hotkey;
}
/// <summary>
/// Unregisters a hotkey from the message receiving queue.
/// </summary>
/// <param name="hotKey">Hotkey to unregister.</param>
internal static void UnregisterHotkey(GlobalHotkey hotKey)
{
if (hotKey != null)
{
GlobalHotkey.UnregisterHotkey(hotKey.ID);
}
}
/// <summary>
/// Registers a hotkey to the global message receiving queue.
/// </summary>
/// <param name="hotKey">Hot key to register.</param>
internal static void RegisterNewHotkey(GlobalHotkey hotKey)
{
if (hotKey != null && hotKey.ID != 0)
{
_registeredHotkeys[hotKey.ID] = hotKey;
}
}
