This depends on the version of the dll found with your WinDev application. For example wd170hf.dll is for WinDev 17, WD90HF.DLL is Windev 9.
The easiest way i can think of doing what u want is either using a program called WDMap (It's installed together with WinDev). Export the table to xls/csv and import that one into a sql-server. This by far is not the best or the fastest solution but it will/should work.
Or use the ODBC connector (this one can be downloaded separately if i am not mistaken). But also comes with WinDev installation.
Note on WinDev u can download & install the full version from the site. But u need a dongle to start the IDE. (u can use the tools (like WDMAP) without a dongle. Officially your not allowed to install the IDE if u do not have a dongle. The express version won't allow u to edit source files made with a full version.