[Objective]In order to improve the efficiency of the development of electronic map,and reduce the burden of developer's,the thesis developed an electronic map engine which could deal with the data of TAB format,based on MiniGUI,and the engine was not for a specific operating system.[Methods]Firstly,the thesis designed a controller on MiniGUI.Then,used interface which was independent of operate system to design the corresponding class.The engine provided functions of reading map data,drawing map,roaming,zoom...