Color Vertical Linear Meters

The following is the command line version of the code in "cppdemo/colorvlinearmeter". 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 = 74.25;

    // The background and border colors of the meters
    int bgColor[] = {0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee};
    const int bgColor_size = (int)(sizeof(bgColor)/sizeof(*bgColor));
    int borderColor[] = {0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666};
    const int borderColor_size = (int)(sizeof(borderColor)/sizeof(*borderColor));

    // Create a LinearMeter object of size 70 x 260 pixels with a 3-pixel thick rounded frame
    LinearMeter* m = new LinearMeter(70, 260, bgColor[chartIndex], borderColor[chartIndex]);
    m->setRoundedFrame(Chart::Transparent);
    m->setThickFrame(3);

    // Set the scale region top-left corner at (28, 30), with size of 20 x 200 pixels. The scale
    // labels are located on the left (default - implies vertical meter)
    m->setMeter(28, 30, 20, 200);

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

    // Demostrate different types of color scales and putting them at different positions
    double smoothColorScale[] = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100,
        0xff0000};
    const int smoothColorScale_size = (int)(sizeof(smoothColorScale)/sizeof(*smoothColorScale));
    double stepColorScale[] = {0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100};
    const int stepColorScale_size = (int)(sizeof(stepColorScale)/sizeof(*stepColorScale));
    double highLowColorScale[] = {0, 0x6666ff, 70, Chart::Transparent, 100, 0xff0000};
    const int highLowColorScale_size = (int)(sizeof(highLowColorScale)/sizeof(*highLowColorScale));

    if (chartIndex == 0) {
        // Add the smooth color scale at the default position
        m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size));
    } else if (chartIndex == 1) {
        // Add the step color scale at the default position
        m->addColorScale(DoubleArray(stepColorScale, stepColorScale_size));
    } else if (chartIndex == 2) {
        // Add the high low scale at the default position
        m->addColorScale(DoubleArray(highLowColorScale, highLowColorScale_size));
    } else if (chartIndex == 3) {
        // Add the smooth color scale starting at x = 28 (left of scale) with zero width and ending
        // at x = 28 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 28, 0, 28, 20);
    } else if (chartIndex == 4) {
        // Add the smooth color scale starting at x = 38 (center of scale) with zero width and
        // ending at x = 28 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 38, 0, 28, 20);
    } else {
        // Add the smooth color scale starting at x = 48 (right of scale) with zero width and ending
        // at x = 28 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 48, 0, 28, 20);
    }

    // Add a blue (0x0000cc) pointer at the specified value
    m->addPointer(value, 0x0000cc);

    // Add a title using white (0xffffff) 8pt Arial Bold font with a border color background
    m->addTitle("Temp C", "Arial Bold", 8, 0xffffff)->setBackground(borderColor[chartIndex]);

    // Add a bottom title using white (0xffffff) 8pt Arial Bold font with a border color background
    // to display the value
    m->addTitle(Chart::Bottom, m->formatValue(value, "2"), "Arial Bold", 8, 0xffffff
        )->setBackground(borderColor[chartIndex]);

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

    //free up resources
    delete m;

}

int main(int argc, char *argv[])
{
    createChart(0, "colorvlinearmeter0.png");
    createChart(1, "colorvlinearmeter1.png");
    createChart(2, "colorvlinearmeter2.png");
    createChart(3, "colorvlinearmeter3.png");
    createChart(4, "colorvlinearmeter4.png");
    createChart(5, "colorvlinearmeter5.png");
    return 0;
}