qtSimpleGraph/qtsgraph.h

#include <QApplication>
#include <QMainWindow>
#include <QPainter>
#include <QDesktopWidget>
#include <QBrush>
#include <QFont>
#include <QPen>
#include <QWidget>
#include <QMouseEvent>
#include <QTimer>
#include <QTime>

#define clRed 0x00FF0000
#define clGreen 0x0000FF00
#define clBlue 0x000000FF
#define clBlack 0x00000000
#define clWhite 0x00FFFFFF

class QTSGraph : public QMainWindow
{
    Q_OBJECT

public:
    QTSGraph(int w = 640, int h = 480, int x = -1, int y = -1, QWidget *parent = nullptr);
    ~QTSGraph();

    void Delay(int ms = 1000);
    void Line(int x1, int y1, int x2, int y2);
    bool MouseClicked();
    void PutPixel(int x, int y, QRgb c = 0x00000000, int PenWidth = 1);
    void SetColor(QRgb c);
    void SetWidth(int PenWidth);

private slots:
    void slotStartTimer();

private:
    QPixmap Canvas;
    QTimer *StartTimer;
    bool EventMouseClicked = false;
    void PaintBox();
    QPen Pen;

protected:
    void paintEvent(QPaintEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
};