[Qgis-developer] segmentation fault in plugin using zoom tool

[Martin Dobias]

On 10/6/06, Radim Blazek <radim.blazek at gmail.com> wrote:
> On 10/5/06, Martin Dobias <wonder.sk at gmail.com> wrote:
> > I see one problem: e.g. GRASS edit has its own set of map tools. The
> > question is what to do when grass edit ends - what tool to activate:
> > Leave map canvas without any tool? Set panning tool as active? If so,
> > how to get the pointer to panning tool to make sure that button
> > associated with the tool will be activated?
>
> Yes, plus you must check somehow if another tool was not selected
> already, for example:
> 1) grass - select new point tool
> 2) qgis - select identify feature tool
> 3) grass - exit editing
>
> In this situation we dont want to disable 'identify feature tool'
> we only have to delete 'grass new point tool' from last non-zoom.
> That is the reason I pass pointer to original tool to unsetMapTool
> so that current tool is only deleted if it matches the tool previously
> set by plugin.

Right, good point. I think the best would be to call unsetMapTool
automatically in destructor of map tool, thus map tool users won't
need to think about cases like this.

Martin