+/- Key controls
« on: April 04, 2016, 12:14:23 PM »
Maybe i am not seeing it but is there a way I can set the +/- key to control increasing and decreasing the selected spots on the graph? If not is that something that can be added please?

Re: +/- Key controls
« Reply #1 on: April 04, 2016, 01:29:03 PM »
Although there's no direct support for +/- keys, depending on the chart type, you can easily modify the selection with a plethora of methods:

- SelectionGrow/Reduce
- SelectionOpAdd/Multiply
- SelectionMoveLeft/Right/Up/Down

With SelectionOpAdd you can shift the y coordinate of 3D chart items for example. Just calling chart.SelectionOpAdd(0, 10), will sum 10 to the current selected items. You could add a KeyDown listener to your form and act accordingly.

In case you want a native support for +/- keys from the chart control itself, how do you think it should work (ie. what amount would be added... 1, 2 ...?). Probably it's more flexible if you implement this modifier on your own event, using the API commented above.