本文详细记录了作者在开发过程中遇到的一个由预处理宏引发的编译错误，并给出了正确的解决方案。同时，作者还分享了自己完成服务器面板开发的心得。
Today I found what result in the yesterday bug.
#ifdef _SPLITTER_WINDOW_H_
#define _SPLITTER_WINDOW_H_
...
The preprocess macro caused the bug. The first time a file included the header file, it did not find a defined "_SPLITTER_WINDOW_H_",
so the class is not compiled. Therefore, the compiler reported a illegal class error. The correct is following.
#ifndef _SPLITTER_WINDOW_H_
#define _SPLITTER_WINDOW_H_
...
Today I also finished the server panel of my kiang. I have to have a rest, coding GUI is so hard.
#ifdef _SPLITTER_WINDOW_H_
#define _SPLITTER_WINDOW_H_
...
The preprocess macro caused the bug. The first time a file included the header file, it did not find a defined "_SPLITTER_WINDOW_H_",
so the class is not compiled. Therefore, the compiler reported a illegal class error. The correct is following.
#ifndef _SPLITTER_WINDOW_H_
#define _SPLITTER_WINDOW_H_
...
Today I also finished the server panel of my kiang. I have to have a rest, coding GUI is so hard.
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