Panning with Context Menu

[ajayre]

I think panning should only be with a left mouse click, not right. When a context menu is being used and panning is enabled then right-clicking causes the chart to jump around. This is a problem if the point of the context menu is to place a markers at the location that was clicked.

I've fixed this in my copy by changing the Chart.Chart_PointerDown function to add a bool parameter indicating if the left mouse button was used, but that breaks backwards compatibility so I don't have a suitable patch to submit.

[beto-rodriguez]

Thanks for the report, this is fixed with the referenced commit and also with #581

This will be supported ion the next version of the library.