c# - 为什么 RegisterHotKey 返回 false？user32.dll

Question

当我运行时RegisterHotKey，它返回false。可能的原因是什么？

internal void RegisterHotKey2(ModifierKeys modifier, Keys key)
{
    _cID += 1;
    if (!RegisterHotKey(_window.Handle, _cID, (uint)modifier, (uint)key))
    {
        Console.WriteLine("oh no: " + modifier.ToString() + " + " + key.ToString());
        throw new InvalidOperationException("couldn't register noooooo");
    }
}

旧版本（请不要判断）

internal void RegisterHotKey2(ModifierKeys modifier, Keys key)
{
    _cID += 1;
    if (!RegisterHotKey(_window.Handle, _cID, (uint)modifier, (uint)key))
        Console.WriteLine("oh no: " + modifier.ToString() + " + " + key.ToString());
    throw new InvalidOperationException("couldn't register noooooo");
}

Answer 1

似乎您的代码总是会抛出异常，请尝试更改为以下..

    internal void RegisterHotKey2(ModifierKeys modifier, Keys key)
        {
            _cID += 1;
            if (!RegisterHotKey(_window.Handle, _cID, (uint)modifier, (uint)key))
             {
                Console.WriteLine("oh no: " + modifier.ToString() + " + " + key.ToString()); 
                throw new InvalidOperationException("couldn't register noooooo");
             }
        }