读取数据库的DSN（数据源名）
的C脚本代码：

#pragma code ("dmclient.dll")
#include "dmclient.h"
#pragma code()

char *returnSource = NULL;
CMN_ERROR dmError;
char project[_MAX_PATH + 1];

// get runtime project
if(!DMGetRuntimeProject(project, sizeof(project), &dmError))
{
printf("\r\nDMGetRuntimeProject not successful\r\n");
}
else
{
DM_PROJECT_INFO dmProjectInfo;

if (!DMGetProjectInformation(project, &dmProjectInfo, &dmError))
{
printf("\r\n DMGetProjectInformation not successful\r\n");
}
else
{
returnSource = SysMalloc(strlen(dmProjectInfo.szDSNName) + 1);
if(returnSource )
{
strcpy(returnSource, dmProjectInfo.szDSNName);
strcat(returnSource, "R");
}
}
}
return (returnSource);