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#-------------------------------------------------
#
# Project created by QtCreator 2017-05-12T08:52:18
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = qwt_test
TEMPLATE = app

INCLUDEPATH += C:\Qwt-6.1.3\include

LIBS += -LC:\Qwt-6.1.3\lib -lqwt

# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

14:18:42: Выполняются этапы для проекта qwt_test...
14:18:42: Настройки не изменились, этап qmake пропускается.
14:18:43: Запускается: «C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe» 
C:\Qt\5.8\mingw53_32\bin\qmake.exe -o Makefile ..\qwt_test\qwt_test.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug"
C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory 'E:/Programs/QWT_test/build-qwt_test-Desktop_Qt_5_8_0_MinGW_32bit-Debug'
mingw32-make[1]: Nothing to be done for 'first'.
mingw32-make[1]: Leaving directory 'E:/Programs/QWT_test/build-qwt_test-Desktop_Qt_5_8_0_MinGW_32bit-Debug'
14:18:44: Процесс «C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe» завершился успешно.
14:18:44: Прошло времени: 00:02.

#include <QMainWindow>

#include <qwt_plot_canvas.h>
#include <qwt_legend.h>
#include <qwt_plot_grid.h>
#include <qwt_plot_curve.h>
#include <qwt_symbol.h>


class MainWindow : public QMainWindow
{
    Q_OBJECT
private:
    QwtPlot *myPlot;
    QwtLegend *leg;
    QwtPlotGrid *grid;
    QwtPlotCurve *curv1,*curv2;
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
};

#include <QMainWindow>

#include <qwt_plot_canvas.h>
#include <qwt_legend.h>
#include <qwt_plot_grid.h>
#include <qwt_plot_curve.h>
#include <qwt_symbol.h>


class MainWindow : public QMainWindow
{
    Q_OBJECT
private:
    QwtPlot *myPlot;
    QwtLegend *leg;
    QwtPlotGrid *grid;
    QwtPlotCurve *curv1,*curv2;
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
};

LIBS+= C:\Qwt-6.1.3\lib

LIBS+= "C:/Qt/Qwt-6.1.3/lib/qwt.dll"