Wrong declaration f TColor in OracleVisual

[Bernhard Geyer]

When NONVISUAL is defined, the application can't be compiled when rangechecks are active.

It stop on the line

TColor = $80000000..$7FFFFFFF;

This must be changed to

TColor = -$7FFFFFFF..$7FFFFFFF;

 

[Marco Kalter]

We'll check it out.