q教程第七章t

dragon9876

g++ -c -pipe -Wall -W -O2 -march=i386 -mcpu=i686 -g -DGLX_GLXEXT_LEGACY -fno-use-cxa-atexit -fno-exceptions  -DQT_NO_DEBUG -I/usr/lib/qt-3.1/mkspecs/default -I. -I/usr/lib/qt-3.1/include -o lcdrange.o lcdrange.cpp
g++ -c -pipe -Wall -W -O2 -march=i386 -mcpu=i686 -g -DGLX_GLXEXT_LEGACY -fno-use-cxa-atexit -fno-exceptions  -DQT_NO_DEBUG -I/usr/lib/qt-3.1/mkspecs/default -I. -I/usr/lib/qt-3.1/include -o main.o main.cpp
g++  -o main lcdrange.o main.o   -L/usr/lib/qt-3.1/lib -L/usr/X11R6/lib -lqt-mt -lXext -lX11 -lm
lcdrange.o(.text+0x2c): In function `LCDRange:CDRange[not-in-charge](QWidget*, char const*)':
/usr/local/work/qt/lcdrange/lcdrange.cpp:11: undefined reference to `vtable for LCDRange'
lcdrange.o(.text+0x33):/usr/local/work/qt/lcdrange/lcdrange.cpp:11: undefined reference to `vtable for LCDRange'
lcdrange.o(.text+0x14c): In function `LCDRange:CDRange[in-charge](QWidget*, char const*)':
/usr/local/work/qt/lcdrange/lcdrange.cpp:11: undefined reference to `vtable for LCDRange'
lcdrange.o(.text+0x153):/usr/local/work/qt/lcdrange/lcdrange.cpp:11: undefined reference to `vtable for LCDRange'
collect2: ld returned 1 exit status
make: *** [main] Error 1

dragon9876

编译别的程序的时候也有这样的错误,
帮忙看看是什么原因??

dragon9876

我一直以为程序写错了,改了几天没改好.
最后照一个examples下的.pro文件写了一个新的,结果就好了.
我原来的.pro文件
________________________________________________
          SOURCES += LCD.cpp
          SOURCES +=main.cpp
________________________________________________
现在的.pro
_________________________________________________
EMPLATE        = app
TARGET          = editor

CONFIG          += qt warn_on release
DEPENDPATH      = ../../include

HEADERS         = LCD.h
SOURCES         = LCDr.cpp \
                  main.cpp
________________________________________________________
希望和我一样的qt新手不要犯同样的错误!!!!!

x11

欢迎和大家共享经验:2cool :2cool