QGIS » QGIS Application

confirmed here

Doesn't crash here on Mac OS X 10.7.5, but does not bring the help forward.

Before clicking Help button, slide dialog away from main Options dialog. Click Help and you might see the help dialog behind the 'Edit create options' dialog. The 'Edit create options' dialog is being shown as ApplicationModal (I think). Generating the help dialog while it's modal, may be causing the crash.

Showing the help dialog with exec() instead of show() brings it to the front, but isn't very useful as it is modal as well. Doing:

  dlg->show(); //non modal
  dlg->raise();
  dlg->activateWindow();

didn't help either. Basically, I think the 'Edit create options' dialog (QgsRasterFormatSaveOptionsWidget) needs to be non-modal to begin with, then it should work.

Similar:
http://stackoverflow.com/questions/9262018/qt-window-over-modal-dialog

One solution might be to put a QgsCollapsibleGroupBox at bottom of QgsRasterFormatSaveOptionsWidget that is populated with the Help button results, instead of trying to pop up another window.

I cannot confirm either crash, nor problem reported by Larry (help dialog behind main dialog).

I am running this on Linux Mint 14 with gdal 1.10, also tested with gdal 1.9

Could reporter and Giovanni you please input their OS and ideally provide a stack trace?

Responding to Larry's suggestion to make QgsRasterFormatSaveOptionsWidget dialog non-modal, I don't think it's a good idea because all prefs dialog are modal.

Other suggestion, to not use help dialog, is interesting, but not really practical for formats which have many options (e.g. gtiff) because it would need to be large.

Also this whole widget is reusable, it is embedded in the raster save as dialog as well as in the options. Therefore a help button with an external dialog is the only practical solution, because it would add more complexity to the raster save as dialog. A fix has to work in the Options as well as in the raster save as.

A solution might be to make the help dialog modal instead of non-modal?

On Mac, raster 'Save as' dialog exhibits same issue (help behind modal create options dialog). See attachments.

Making the help dialog modal does work, bringing it in front of the create options, but it is not as helpful since the user can't leave it open for reference. However, I understand that it is important for the create options dialog to be modal to begin with.

Regarding the QgsCollapsibleGroupBox suggestion and long option sets, maybe the group box could contain a scroll area or text edit area with scroll bar(s) that shows the help.

Lastly, there is a layout artifact that shows up when the create options dialog is resized larger. See options_gdal-create-artifact.png Not sure what that's from.

After update of master version (1.9.0-165) there is no error

QGIS version
1.9.0-Master
QGIS code revision
a928d51
Compiled against Qt
4.7.1
Running against Qt
4.7.1
Compiled against GDAL/OGR
1.9.2
Running against GDAL/OGR
1.9.2
GEOS Version
3.3.6
PostgreSQL Client Version
8.3.10
SpatiaLite Version
3.0.1
QWT Version
5.2.1
PROJ.4 Version
480
QScintilla2 Version
2.6.2
This copy of QGIS writes debugging output.

Great to see it's resolved, I can't see which commit resolved this...
I am also unable to update from osgeo4w at this time (some problems with my VM), so I cannot confirm it works now.

In the meantime, I am re-opening this bug (but changing subject and description), as there are a number of gui issues identified by Larry (on Mac only it seems).

Larry - I'm not sure what to do from here, as I would prefer not to change the UI design but rather have the help dialog appear on top.

As I don't have access to a Mac there is little I can do in terms of debugging...

initial subject was:
qgis crashes when "help" button is selected in options-->gdal-->edit create options

initial description was:
qgis crashes when "help" is selected in options-->gdal-->edit create options
it happens for every type of gdal driver options selected

see snapshot

QGIS version
1.9.0-Master
QGIS code revision
831f99a
Compiled against Qt
4.7.1
Running against Qt
4.7.1
Compiled against GDAL/OGR
1.9.2
Running against GDAL/OGR
1.9.2
GEOS Version
3.3.6
PostgreSQL Client Version
8.3.10
SpatiaLite Version
3.0.1
QWT Version
5.2.1
PROJ.4 Version
480
QScintilla2 Version
2.6.2

confirmed with latest osgeo4w - other platforms are not affected.
see new bug #7008