public bool Register()
{
// Check that we have not registered
if (this.IsRegistered)
{
throw new NotSupportedException("This hotkey is already registered");
}
if (this.KeyCode == Keys.None)
{
throw new NotSupportedException("Cannot register an empty hotkey");
}
// Remove all modifiers from the 'main' hotkey
uint key = (uint)this.KeyCode & (~(uint)Keys.Alt) & (~(uint)Keys.Control) & (~(uint)Keys.Shift);
// Get unmanaged version of the modifiers code
uint modifiers = (this.KeyCode.HasFlag(Keys.Alt) ? HotkeyHandlerNativeMethods.MOD_ALT : 0)
| (this.KeyCode.HasFlag(Keys.Control) ? HotkeyHandlerNativeMethods.MOD_CONTROL : 0)
| (this.KeyCode.HasFlag(Keys.Shift) ? HotkeyHandlerNativeMethods.MOD_SHIFT : 0);
// Register the hotkey
if (!HotkeyHandlerNativeMethods.RegisterHotKey(this._hotkeyTarget, this._hotkeyId, modifiers, key))
{
return(false);
}
Application.AddMessageFilter(this);
this.IsRegistered = true;
// We successfully registered
return(true);
}
public void Unregister()
{
// Check that we have registered
if (!this.IsRegistered)
{
return;
}
this.IsRegistered = false;
Application.RemoveMessageFilter(this);
// Clean up after ourselves
HotkeyHandlerNativeMethods.UnregisterHotKey(this._hotkeyTarget, this._hotkeyId);
}
public void Unregister()
{
// Check that we have registered
if (!this.IsRegistered)
{
throw new NotSupportedException("This hotkey was not registered");
}
Application.RemoveMessageFilter(this);
// Clean up after ourselves
if (!HotkeyHandlerNativeMethods.UnregisterHotKey(this._hotkeyTarget, this._hotkeyId))
{
throw new Win32Exception();
}
this.IsRegistered = false;
}