Dear my friends... I tried to develop an application with qt. As the beginning I try to make a very simple application with qt. just display a form contain a label "Hello Qt". But I have problem in compiling as below: patrixlinux@patrix:~/arsip/proyek/metric> ls conversionform.ui main.cpp metric.pro patrixlinux@patrix:~/arsip/proyek/metric> qmake -o Makefile metric.pro patrixlinux@patrix:~/arsip/proyek/metric> ls Makefile conversionform.ui main.cpp metric.pro patrixlinux@patrix:~/arsip/proyek/metric> make g++ -c -pipe -O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -fPIC -Wall -W -O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -fPIC -DQT_NO_DEBUG -DQT_SHARED -DQT_TABLET_SUPPORT -I/usr/lib/qt3/mkspecs/default -I. -I/usr/include -I/usr/lib/qt3/include -I.ui/ -I. -I.moc/ -o .obj/main.o main.cpp main.cpp:2:22: unnamed1.h: No such file or directory main.cpp: In function `int main(int, char**)': main.cpp:7: error: `conversionForm' undeclared (first use this function) main.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.) main.cpp:7: error: syntax error before `;' token main.cpp:8: error: `w' undeclared (first use this function) make: *** [.obj/main.o] Error 1 patrixlinux@patrix:~/arsip/proyek/metric> My program only contents 1 form (conversionForm) with 1 textLabel. too poor that I have not understood where I should define the init (of constructor) and destroy (of destructor). In project view, I found "conversionform.ui.h" and thist texts as below : " /**************************************************************************** ** ui.h extension file, included from the uic-generated form implementation. ** ** If you wish to add, delete or rename functions or slots use ** Qt Designer which will update this file, preserving your code. Create an ** init() function in place of a constructor, and a destroy() function in ** place of a destructor. *****************************************************************************/ " I tried to see the help of qt but I didn't find a brief explanation about where I can make init() from qt designer. Please help me, teach me please..... I am an idiot computer freak but I strong willing to learn. Thank you very much for your generousity. __________________________________ Do you Yahoo!? SBC Yahoo! - Internet access at a great low price. http://promo.yahoo.com/sbc/