Problem displaying my main window

[jacek]

In about.h it should be:

class Dialog : public QDialog, public Ui::Dialog

class Dialog : public QDialog, public Ui::Dialog

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[Salazaar]

IT WORKS!!! Special thanks to: jacek, jpn, wysota
Regards

[anafor2004]

I am new at QT,
I tried to do same thing but i had this mistake.What is the solution? Can you help me?

make x86
qmake -o qMakefile my.pro
make --makefile qMakefile
make[1]: Entering directory `/home/canibek/davinci/software/workspace/denem'
g++ -c -pipe -O2 -D_REENTRANT -Wall -W -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/default -I. -I/usr/include/QtCore -I/usr/include/QtCore -I/usr/include/QtNetwork -I/usr/include/QtNetwork -I/usr/include/QtGui -I/usr/include/QtGui -I/usr/include -Imoc_obj -I. -o moc_obj/main.o main.cpp
In file included from main.cpp:2:
main.h:34:3: warning: no newline at end of file
main.cpp:12:2: warning: no newline at end of file
In file included from main.cpp:3:
dialog1.h:3: error: redefinition of ‘class Dialog’
dialog1.h:4: error: previous definition of ‘class Dialog’
make[1]: Leaving directory `/home/canibek/davinci/software/workspace/denem'
make[1]: *** [moc_obj/main.o] Error 1
make: *** [x86] Error 2

[jpn]

Missing #ifdef, #define, #endif ?

[anafor2004]

Thanks JPN, How did I such a simple mistake? I must work harder , Thank you again, I hope some day I will be an expert(Guru) here.