Hi,

make PREFIX=/usr clean all LCL_PLATFORM=qt OPT="-dUSE_QT_4_3 -dDEBUG"

when compiling with debug, there are the following errors due to useless typecasts (negative numbers typecasted to unsigned int when assigning to integer)

qtwidgets.pas(5889,41) Error: range check error while evaluating constants
qtwidgets.pas(6084,41) Error: range check error while evaluating constants
qtwidgets.pas(6116,34) Error: range check error while evaluating constants
qtwidgets.pas(6152,35) Error: range check error while evaluating constants
qtwidgets.pas(6182,41) Error: range check error while evaluating constants
qtwidgets.pas(6270,42) Error: range check error while evaluating constants
qtwidgets.pas(6316,41) Error: range check error while evaluating constants

regards,

Den Jean