vb调用dll，dll里面一个简单加法函数，一个结构参数赋初值，在窗体显示出来。在vb调用时，在文件目录中右键用vb运行，否则因为目录问题会出现找不到dll的现象。-call vb dll, dll inside a simple additive function, a structural parameter initial value, in the form displayed. In vb call, right in the file directory using vb run, otherwise the problem will appear because the directory can not find the dll phenomenon.