tant PRIMARY_VIEW, then allocate fileNames array with this value.
<p>fileNames receives the full path names of the opened files in the primary view. User is responsible to allocate fileNames array with an enough size. The return value is the number of file full path names copied in fileNames array. 
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<td width="50%" rowspan="2" style="background:LightYellow;">  NPPM_GETOPENFILENAMESSECOND
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