QT Environment Construction and HelloWorld

I use QT5.1, what are packaged, and also brought Qtcreator, directly downloaded down to run

Http://qt-project.org/downloads

Qt 5.1.0 for Windows 32-bit (MinGW 4.8, OpenGL, 666 MB)

Qt5.1.0\tools\mingw48_32

QT5.1 in the MinGW 4.8, configure the MinGW environment variables, you can

HelloWorld

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1. #include   "mainwindow.h"   

2. #include  < Qapplication.h>   

3. #include  <qpushbutton.h>    

4.   

5. int  main ( int  argc,  Char  *argv[])   

6. {  

7.      qapplication a (ARGC,&NBSP;ARGV);   

8.     qpushbutton  hello ( "Hello world" ,  0);   

9.      Hello.resize (100,60);   

10.     a.setactivewindow (&hello);   

11.     hello.show ();   

12.       return  a.exec ();   

13. }  

Environment variables

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1. C_home F:\Program\Qt\Qt5.1.0\Tools\mingw48_32

3. PATH%c_home%\bin

4. Library_path%c_home%\lib

5. C_includede_path%c_home%\include

6. Cplus_include_path%c_home%\include\c++\3.4.5;%c_home%\include\c++\3.4.5\backward;%c_home%\include

Helloworld.pro

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1. QT + + Core GUI

2. GreaterThan (Qt_major_version, 4): QT + = Widgets

3. TARGET = HelloWorld

4. TEMPLATE = App

5. SOURCES + = Main.cpp\

6. Mainwindow.cpp

7. HEADERS + = Mainwindow.h

8. FORMS + = Mainwindow.ui

In 5.1, when you manually build QT dome, you need to include the next two sentences in the *.pro file:

QT + + Core GUI

GreaterThan (Qt_major_version, 4): QT + = Widgets

QT Environment Construction and HelloWorld