How to programmatically apply MapXtreme Themes

Question

I maintain a Desktop application using MapXtreme 7.0 and I have trouble finding much documentation or useful examples (I do have the pdfs, samples etc that come on the install discs)

Currently I am trying to programmaticly apply an IndividualValueTheme to a FeatureLayer. I can apply a standard default theme, I can also show a ModifyIndValueThemeDlg and let the user change the theme. However what I want to do is apply my own theme to the layer without user intervention.

The following code attempts to do this but results in the Layer showing with the default IndividualValueTheme (ie not with my styles)

Any help would be greatly appreciated

void ApplyTheme(FeatureLayer lyr)
{
    if (lyr.Modifiers.Contains(HarvOpsTheme) || lyr.Modifiers.Contains(HarvOpsRangedTheme))
        return;
    HarvOpsTheme = new IndividualValueTheme(lyr, "iOperationType","HarvOpsTheme");
    lyr.Modifiers.Append(HarvOpsTheme);
    HarvOpsTheme.Bins[0].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(255, 255, 0)));
    HarvOpsTheme.Bins[1].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(0, 255, 0)));
    HarvOpsTheme.Bins[2].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(128, 128, 0)));
    HarvOpsTheme.Bins[3].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(192, 128, 0)));
    HarvOpsTheme.Bins[4].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(0, 128, 0)));
    HarvOpsTheme.Bins[5].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(0, 205, 128)));
    HarvOpsTheme.Bins[6].Style.ApplyStyle(GetHollowAreaStyle(Color.FromArgb(255, 0, 0)));

    HarvOpsTheme.Apply(HarvOpsTheme);
    HarvOpsTheme.RecomputeStyles();

    lyr.Invalidate();
}

AreaStyle GetHollowAreaStyle(Color color)
{
    return new AreaStyle
    {
        Interior = StockStyles.HollowFillStyle(),
        Border = new SimpleLineStyle(new LineWidth(1,LineWidthUnit.Pixel), 1, color)
    };
}

score 0 · Answer 1 · answered Oct 04 '12 at 06:49

0

For Individual Theme only,recomputing styles causes to regenerate the first theming result.After user changes styles by [Bins] you do not need to recompute them again.

In short, simply remove the line and let the magic happen

HarvOpsTheme.RecomputeStyles();

Best Regards

answered Oct 04 '12 at 06:49

Myra

3,646
3
38
47

That may well have been a bug in my code but with or without that line no 'magic' ever happened. Thankfully MapXtreme is now all but historical. – flurbius Jun 04 '13 at 13:38
I agree with history part of Mapxtreme's never documented coding style and a year+ later coming response of yours. – Myra Jun 04 '13 at 13:42

How to programmatically apply MapXtreme Themes

1 Answers1