1.5.x compile error

[Bennett Helm]

g++-dp-4.2 -DHAVE_CONFIG_H -I. -I. -I../../../src - 
DQT_CLEAN_NAMESPACE -DQT_GENUINE_STR -DQT_NO_STL -DQT_NO_KEYWORDS - 
I../../../src -I../../../src/frontends -I../../../images -I/Users/ 
bennett/lyx/gcc-4.0/Qt-4.2.1-install/include -I/Users/bennett/lyx/ 
gcc-4.0/Qt-4.2.1-install/include/QtCore -I/Users/bennett/lyx/gcc-4.0/ 
Qt-4.2.1-install/include/QtGui -I../../../boost -I../../../src/ 
frontends/controllers -Wextra -Wall -g -Os -MT QLPainter.lo -MD -MP - 
MF .deps/QLPainter.Tpo -c QLPainter.C -o QLPainter.o
QLPainter.C: In constructor 'lyx::frontend::QLPainter::QLPainter 
(QWidget*)':
QLPainter.C:39: error: no matching function for call to  
'lyx::frontend::QLPainter::begin(QWidget*&)'
/Users/bennett/lyx/gcc-4.0/Qt-4.2.1-install/include/QtGui/qpainter.h: 
80: note: candidates are: bool QPainter::begin(QPaintDevice*)
make[7]: *** [QLPainter.lo] Error 1

Bennett