private bool GetEnabled()
{
if (!InvokeRequired)
{
return(base.Enabled);
}
GetBoolDelegate del = GetEnabled;
return(Invoke(del) is bool && (bool)Invoke(del));
}
private bool GetEnabled()
{
if (Parent == null || !Parent.InvokeRequired)
{
return(base.Enabled);
}
GetBoolDelegate del = GetEnabled;
return(Parent.Invoke(del) is bool && (bool)Parent.Invoke(del));
}
/// <summary>
/// 初始化非托管委托指针(函数指针);
/// </summary>
private void InitializePtr()
{
//位置委托;
SetInt64Delegate setPos = OnSetPos;
GetInt64Delegate getPos = OnGetPos;
delegates.Add(setPos);
delegates.Add(getPos);
SetPositionFunc(
StreamPtr,
getPos,
setPos
);
//长度委托;
GetInt64Delegate getLength = OnGetLength;
delegates.Add(getLength);
SetGetLengthFunc(StreamPtr, getLength);
//可读/写委托;
GetBoolDelegate canRead = OnCanRead;
GetBoolDelegate canWrite = OnCanWrite;
delegates.Add(canRead);
delegates.Add(canWrite);
SetCanReadFunc(StreamPtr, canRead);
SetCanWriteFunc(StreamPtr, canWrite);
//写入委托;
WriteDelegate write = OnWrite;
delegates.Add(write);
SetWriteFunc(StreamPtr, write);
//读取委托;
ReadDelegate read = OnRead;
delegates.Add(read);
SetReadFunc(StreamPtr, read);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="path">path is "form-name/label-text"</param>
/// <param name="getValue">lambda expression to get value</param>
/// <param name="setValue">lambda expression to set value</param>
public InputBool(string path, GetBoolDelegate getValue, SetBoolDelegate setValue)
: base(path, () => getValue().ToString(), (val) => setValue(Convert.ToBoolean(val)))
{
}
private static extern void SetCanWriteFunc(IntPtr stream, GetBoolDelegate canWriteFunc);
private static extern void SetCanReadFunc(IntPtr stream, [MarshalAs(UnmanagedType.FunctionPtr)] GetBoolDelegate canReadFunc);