Zoom IN with a rectangle from bottom right to upper left?

[Alain Bolduc]

Hi,

it is possible to zoom in by dragging a rectangle from top left to bottom right. However, any "negative" rectangle will undo all zoom.

Is it possible to zoom by dragging a rectangle from any other corner (top right to bottom left, bottom left to upper right, bottom right to upper left)?

If not, what should I implement in order to have such a feature?

Thanks

[Narcís]

Hi Qwerty,

Yes, you could try disabling standard zooming features:

Code: Select all

      tChart1.Zoom.Allow = false;

And then use ZoomRect:

Code: Select all

      tChart1.Zoom.ZoomRect(Rect);

You could define the rectangle using TChart's mouse events: MouseDown, MouseUp, etc.

Hope this helps!