C# 绑定仅程序内有效的热键

热键 Alt

protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
    if ((Keys.Alt & keyData) == Keys.Alt) MessageBox.Show("1");
    return base.ProcessCmdKey(ref msg, keyData);
}

热键 Alt+D

protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
    const int WM_KEYDOWN = 0x100;
    const int WM_SYSKEYDOWN = 0x104;
 
    if ((msg.Msg == WM_KEYDOWN) || (msg.Msg == WM_SYSKEYDOWN))
    {
        switch (keyData)
        {
            case Keys.Alt | Keys.D:
                MessageBox.Show("ALT+D~");
                break;
        }
    }
 
    return base.ProcessCmdKey(ref msg, keyData);
}