[Qgis-developer] enabling the overview map

[Larry Shaffer]

Hi Aaron,

On Wed, Apr 4, 2012 at 5:27 PM, SJWC GIS <> wrote:

> Hello,  I'm creating a plugin that modifies the qgis interface defaults
> when it's installed.  One of the things I'm trying to do is turn on the
> overview map by default.  I haven't found a way to do it yet.  I could only
> get as close as...
>
> self.iface.mapCanvas().enableOverviewMode(QgsMapOverviewCanvas(None,
> self.iface.mapCanvas()))
>
> This ends up crashing qgis altogether.  I'm guessing it has something to
> do with the fact that I have no reference to the existing overview map
> object, and trying to create a new one is bad news.  Any insight you could
> provide on the best way to accomplish such things (and where in the api I
> can look for answers like this) would be much appreciated.  Thanks!
>

I think the overview object is already created on project load (if the
project has one).

If you are looking to just show/hide it's dock widget, try...

    overview = iface.mainWindow().findChild(QDockWidget, "Overview")
    if overview:
        overview.show()  # or hide(), etc.

Regards,

Larry Shaffer
Dakota Cartography
Black Hills, South Dakota
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