Hi Fons,
> make sure that after creating the TGLVContainer you associate
> the container with the TGListView. In that case the container
> events are properly propagated to the TGListView and things should work.
> Example:
>
> fListView = new TGListView(fV2, 520, 250);
> fIconBox = new TGLVContainer(fListView->GetViewPort(), 520, 250,
> kHorizontalFrame, fgWhitePixel);
> fIconBox->Associate(this);
Thank you, this would be fine but I (and I'm sure other people in the future
too) want to use the signal/slot mechanism i.e. connect some signal
function which is called when I double-click on an item to one of my slot
functions instead of using Associate() and ProcessMessage(). The only signal
function I found was TGListView::DoubleClicked(); neither TGLVContainer nor
TGFileContainer have such a signal function. So I believe my Connect(...)
code below is correct but doesn't work therefore I believe this is a bug in
ROOT because the double (and single) click events are apparently not
properly propagated to the TGListView _signal_ functions. Or do I have to
use Associate() for that? As far as I understood from the example codes I
don't need to. I won't be able to use Associate(this) anyway because my
class is not inherited from TGMainFrame or any other GUI class therefore it
cannot be the argument for Associate(). So I just use
fFileView = new TGListView(fC2,540,180);
fFileCont = new TGFileContainer(fFileView->GetViewPort(),100,100,
kVerticalFrame,TGFrame::GetWhitePixel());
fFileView->Connect("DoubleClicked(TGLVEntry*, Int_t)", "PbarFileBrowser",
this, "HandleBrowser(TGLVEntry*, Int_t)");
but as I said it doesn't work.
Cheers,
Bertalan
> Bertalan Juhasz wrote:
>
> > Dear Rooters,
> >
> > I'm developing some GUI classes and I've encountered the following
> > problem: even if I connect TGListView::DoubleClicked() to one of my slot
> > functions using
> >
> > fFileView->Connect("DoubleClicked(TGLVEntry*, Int_t)",
"PbarFileBrowser",
> > this, "HandleBrowser(TGLVEntry*, Int_t)");
> >
> > the HandleBrowser() function is never called when I double click on an
> > item although ROOT is not complaining about wrong signal/slot
connection.
> > Was I doing something wrong? After digging into and playing with the
ROOT
> > code I've discovered that HandleBrowser() is never called because
> > TGListView::DoubleClicked() is never called, only
> > TGLVContainer::HandleDoubleClick(). After I've added the following lines
> > to TGLVContainer::HandleDoubleClick()
> >
> > if (fListView) fListView->DoubleClicked(f, event->fCode);
> > if (fListView) fListView->DoubleClicked(f, event->fCode, event->fXRoot,
> > event->fYRoot);
> >
> > right after SendMessage(...) (similarly to TGTreeView) everything worked
> > fine but maybe this is a dirty/illegal solution (I'm completely new to
GUI
> > programming). Most likely TGListView::Clicked() has similar problems but
> > that I didn't investigate.
> >
> > I'm using ROOT 3.02/06 with RedHat 7.2.
> >
> > BTW, are there plans to write some User's Guide on GUI programming? For
> > those how never did anything like that before (like myself) it's a bit
> > painful (and dangerous) to learn just by digging through example codes
> > (although those codes are quite nice).
> >
> > Regards,
> >
> > Bertalan
> >
> >
> >
> >
>
>
> --
> Org: CERN, European Laboratory for Particle Physics.
> Mail: 1211 Geneve 23, Switzerland
> E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248
> WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
>
>
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