[GRASS-dev] wxGUI scatterplot: add wx.BeginBusyCursor and wx.EndBusyCursor

[Markus Neteler]

Hi,

when plotting "larger" data (eg two landsat channels  or whatever)
with the Scatterplot tool, then the calculation starts while not
showing the cursor busy. The user may assume that the thing is crashed
while it indeed simply calculates... Then the plot comes up and all is
fine.

I would like to add
    wx.BeginBusyCursor()
...
    wx.EndBusyCursor()

somewhere in wxplot/dialogs.py but I don't really know where that's needed.

A few other wxGUI tools may also lack this cursor change.

thanks for hints,
Markus