C#编写的GeoTiff程序，程序中内容完整，经过调试，可作为研究地学人员的参考资料-The objectives of the reader are to understand how to add the raster layer to the map control, how to manipulate the raster symbology, how to get the raster information, and how to join the cursor to the loc

仿照windows画图编写的画图程序，用VB6编写，可以学习VB ActiveX控件编写方法，以及VB画图基本编写方法。-windows paint.