Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

GUI application

C++ standard:

C++11

Compiler(s):

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppQPainterExample1/CppQPainterExample1.pro


exists (../../DesktopApplication.pri) {

  include(../../DesktopApplication.pri)

}

!exists (../../DesktopApplication.pri) {

  QT += core

  QT += gui

  greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

  CONFIG   += console

  CONFIG   -= app_bundle

  TEMPLATE = app

  CONFIG(release, debug|release) {

    DEFINES += NDEBUG NTRACE_BILDERBIKKEL

  }

  QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++

  unix {

    QMAKE_CXXFLAGS += -Werror

  }

}



exists(../../Libraries/Boost.pri) {

  include(../../Libraries/Boost.pri)

}

!exists(../../Libraries/Boost.pri) {

  win32 {

    INCLUDEPATH += \

      ../../Libraries/boost_1_55_0

  }

}



SOURCES += main.cpp

./CppQPainterExample1/main.cpp


#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#pragma GCC diagnostic ignored "-Wunused-but-set-parameter"

#include <QApplication>

#include <QPixmap>

#include <QLabel>

#include <QPainter>

#pragma GCC diagnostic pop



int main( int argc, char* argv[])

{

  QApplication app( argc, argv );



  //Create a QPixmap to show

  QPixmap pixmap(256,256);

  pixmap.fill( Qt::white );



  //Create a QPainter to draw on the QPixmap

  QPainter painter(&pixmap);

  painter.setPen(Qt::black);



  //Wanted to tyy out some strange floating point values

  painter.drawEllipse(QPointF(126.6,126.4),124.1,123.3);



  //Create a QLabel to show the QPixmap

  QLabel label;

  label.setPixmap(pixmap);

  label.show();



  return app.exec();

}

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(C++) QPainterExample1

Technical facts

Qt project file: ./CppQPainterExample1/CppQPainterExample1.pro

./CppQPainterExample1/main.cpp