There are optional string resource files available. Here is a list of those files:


twainresourcestrings_cantonese.txt      

twainresourcestrings_english.txt      

twainresourcestrings_dutch.txt        

twainresourcestrings_french.txt       

twainresourcestrings_german.txt       

twainresourcestrings_greek.txt       

twainresourcestrings_italian.txt      

twainresourcestrings_japanese.txt       

twainresourcestrings_korean.txt       

twainresourcestrings_portuguese.txt

twainresourcestrings_portuguese_br.txt

twainresourcestrings_romanian.txt     

twainresourcestrings_russian.txt      

twainresourcestrings_spanish.txt      

twainresourcestrings_turkish.txt      

twainresourcestrings_simplified_chinese.txt       

twainresourcestrings_traditional_chinese.txt       


These files control the language used when reporting errors and logging information when using DTWAIN. 


The functions that will load a specific language resource is DTWAIN_LoadCustomStringResources.  


If you want to use a specific string from the resource file, the function to use is DTWAIN_GetResourceString


If you want to  add your own language resource, please refer to the instructions here.