1. Author: ngohaibac@hocdelam.org Website: http://www.ngohaibac.net
2. hello.cpp
   1. #include <QApplication> #include <QLabel> int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel *label = new QLabel("Hello Qt!"); label->show(); return app.exec(); }
3. Environment variables
   1. Windows
      1. Mingw
         1. C:\Qt\2009.04\mingw\bin
      2. qmake
         1. C:\Qt\2009.04\qt\bin
   2. Linux
4. Compile
   1. Create a platform-independent project file
      1. qmake -project
      2. hello.c hello.pro
   2. Create Makefile
      1. qmake hello.pro
      2. Topic
   3. Build program
      1. Linux
         1. make
      2. Windows
         1. mingw32-make
5. Run
   1. debug/hello.exe
   2. Topic