private static void UnregPrevHotkey(HotKeys.HotKeyCallBackHandler cb)
{
GlobalHotKey.HotKey prevHotKey;
if (HotKeys.IsCallbackExists(cb, out prevHotKey))
{
// unregister previous one
HotKeys.UnRegist(prevHotKey);
}
}
/// <summary>
/// Find correct callback and corresponding label
/// </summary>
/// <param name="tb"></param>
/// <param name="cb"></param>
/// <param name="lb"></param>
private void PrepareForHotkey(TextBox tb, out HotKeys.HotKeyCallBackHandler cb, out Label lb)
{
/*
* XXX: The labelName, TextBoxName and callbackName
* must follow this rule to make use of reflection
*
* <BaseName><Control-Type-Name>
*/
if (tb == null)
throw new ArgumentNullException(nameof(tb));
var pos = tb.Name.LastIndexOf("TextBox", StringComparison.OrdinalIgnoreCase);
var rawName = tb.Name.Substring(0, pos);
var labelName = rawName + "Label";
var callbackName = rawName + "Callback";
var callback = HotkeyCallbacks.GetCallback(callbackName);
if (callback == null)
{
throw new Exception($"{callbackName} not found");
}
cb = callback as HotKeys.HotKeyCallBackHandler;
var label = GetFieldViaName(GetType(), labelName, this);
if (label == null)
{
throw new Exception($"{labelName} not found");
}
lb = label as Label;
}