Build 3.0.0.117 of xlsgen introduces internet pictures. As the name suggests, this scenario is for inserting pictures downloaded from the internet, by only specifying a url. This is particularly interesting for scraping and/or report building scenarios.

xlsgen::IXlsPicturePtr pic1 = worksheet->Pictures->Add(L"http://xlsgen.arstdesign.com/demo0.gif");
pic1->TopCell = 2;
pic1->LeftColumn = 2;
pic1->Borders->Style = xlsgen::chartborderstyle_solid;
pic1->Borders->Color = xlsgen::colorRed;