Sheldon Lee-Wen wrote: > /home/sheldonl/development/learnqt/learnqt/lcdrange.cpp:23: undefined > reference to `LCDRange::QPaintDevice virtual table' > /home/sheldonl/development/learnqt/learnqt/lcdrange.cpp:23: undefined > reference to `LCDRange virtual table' I think you missing the `moc` run and/or don't link the moc*.o files with your executable. See the text "Using the Meta Object Compiler" of the QT reference documentation (file:/usr/share/doc/libqt2/doc/html/moc.html), especially the usage methods at 25% of the document. Cheers, Viktor -- Viktor Rosenfeld WWW: http://www.informatik.hu-berlin.de/~rosenfel/
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