Color Horizontal Bar Meters

The following is the command line version of the code in "cppdemo/colorhbarmeter". The MFC version of the code is in "mfcdemo/mfcdemo". The Qt Widgets version of the code is in "qtdemo/qtdemo". The QML/Qt Quick version of the code is in "qmldemo/qmldemo".
#include "chartdir.h"

void createChart(int chartIndex, const char *filename)
{
    // The value to display on the meter
    double value = 75.35;

    // The background, border and bar colors of the meters
    int bgColor[] = {0xbbddff, 0xccffcc, 0xffddff, 0xffffaa, 0xffdddd, 0xeeeeee};
    const int bgColor_size = (int)(sizeof(bgColor)/sizeof(*bgColor));
    int borderColor[] = {0x000088, 0x006600, 0x880088, 0xee6600, 0x880000, 0x666666};
    const int borderColor_size = (int)(sizeof(borderColor)/sizeof(*borderColor));
    int barColor[] = {0x0088ff, 0x00cc00, 0x8833dd, 0xff8800, 0xee3333, 0x888888};
    const int barColor_size = (int)(sizeof(barColor)/sizeof(*barColor));

    // Create a LinearMeter object of size 260 x 80 pixels with a 3-pixel thick rounded frame
    LinearMeter* m = new LinearMeter(260, 80, bgColor[chartIndex], borderColor[chartIndex]);
    m->setRoundedFrame(Chart::Transparent);
    m->setThickFrame(3);

    // Set the scale region top-left corner at (18, 24), with size of 222 x 20 pixels. The scale
    // labels are located on the top (implies horizontal meter)
    m->setMeter(18, 24, 222, 20, Chart::Top);

    // Set meter scale from 0 - 100, with a tick every 10 units
    m->setScale(0, 100, 10);

    if (chartIndex % 4 == 0) {
        // Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale)
        double smoothColorScale[] = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
            0xff0000};
        const int smoothColorScale_size = (int)(sizeof(smoothColorScale)/sizeof(*smoothColorScale));
        m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 48, 5);
    } else if (chartIndex % 4 == 1) {
        // Add a 5-pixel thick step color scale at y = 48 (below the meter scale)
        double stepColorScale[] = {0, 0x00cc00, 50, 0xffdd00, 80, 0xff3333, 100};
        const int stepColorScale_size = (int)(sizeof(stepColorScale)/sizeof(*stepColorScale));
        m->addColorScale(DoubleArray(stepColorScale, stepColorScale_size), 48, 5);
    } else if (chartIndex % 4 == 2) {
        // Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale)
        double highLowColorScale[] = {0, 0x0000ff, 40, Chart::Transparent, 60, Chart::Transparent,
            100, 0xff0000};
        const int highLowColorScale_size = (int)(sizeof(highLowColorScale)/sizeof(*highLowColorScale));
        m->addColorScale(DoubleArray(highLowColorScale, highLowColorScale_size), 48, 5);
    } else {
        // Add a 5-pixel thick high only color scale at y = 48 (below the meter scale)
        double highColorScale[] = {70, Chart::Transparent, 100, 0xff0000};
        const int highColorScale_size = (int)(sizeof(highColorScale)/sizeof(*highColorScale));
        m->addColorScale(DoubleArray(highColorScale, highColorScale_size), 48, 0, 48, 8);
    }

    // Add a bar from 0 to value with glass effect and 4 pixel rounded corners
    m->addBar(0, value, barColor[chartIndex], Chart::glassEffect(Chart::NormalGlare, Chart::Top), 4)
        ;

    // Add a label right aligned to (243, 65) using 8pt Arial Bold font
    m->addText(243, 65, "Temperature C", "Arial Bold", 8, Chart::TextColor, Chart::Right);

    // Add a text box left aligned to (18, 65). Display the value using white (0xffffff) 8pt Arial
    // Bold font on a black (0x000000) background with depressed rounded border.
    TextBox* t = m->addText(18, 65, m->formatValue(value, "2"), "Arial", 8, 0xffffff, Chart::Left);
    t->setBackground(0x000000, 0x000000, -1);
    t->setRoundedCorners(3);

    // Output the chart
    m->makeChart(filename);

    //free up resources
    delete m;

}

int main(int argc, char *argv[])
{
    createChart(0, "colorhbarmeter0.png");
    createChart(1, "colorhbarmeter1.png");
    createChart(2, "colorhbarmeter2.png");
    createChart(3, "colorhbarmeter3.png");
    createChart(4, "colorhbarmeter4.png");
    createChart(5, "colorhbarmeter5.png");
    return 0;
}