It is ok now. Good work Manuel !
That works well. Thank-you! But now (with version 2.1) I have errors in fvalgred.cpp, lines 89, 91, 95 and 97. The arguments of wxGrid::SetCellTextColour() and wxGrid::SetCellBackgroundColour() are respectively: color, row and column. This is deprecated. The new version needs: row, column and color. I have wxWidgets 3.1 compiled with WXWIN_COMPATIBILITY_2_8 and WXWIN_COMPATIBILITY_3_0 defined to 0. The version 2.0 of fvalgred.cpp used the new way (row, column, color) and compiled correctly. So maybe...
wxNumberValidator - 0 greater than 0.001 error