用VC的MFC框架，GUI编程的实例，可以绘制各种电子元器件，包括三极管，电容等，可直接用于电子元器件的功能绘制，保证可以运行。-The MFC fr a mework with VC, GUI programming examples, you can draw a variety of electronic components, including transistors, capacitors, electronic components can be directly used for