[Gambas-user] Program going off the rails in a way I can't explain. Help?

[Charlie Reinl]

Am Montag, den 18.01.2010, 17:16 -0600 schrieb Bill Richman:
> Well, I upgraded to Gambas 2.19 using the instructions for Ubuntu 
> Intrepid found here: http://gambasdoc.org/help/install/ubuntu?view.   
> Since "Help/About" now reports 2.19, I have to assume that worked, and 
> I'm still getting the same behavior (jumping into the "_click" event 
> when running the .clear method of the combo-box control).  Although it 
> seems like it runs the _click handler a couple of times for each call to 
> .clear, and once during the first usage of the .add method as well: 
> 
> FMain.Populate_cbBedList.178: About to run cbBedList.Clear
> FMain.cbBedList_Click.169: We're in cbBedList_Click()!
> FMain.cbBedList_Click.169: We're in cbBedList_Click()!
> FMain.Populate_cbBedList.180: Right after cbBedList.Clear
> FMain.Populate_cbBedList.185: $res.Count=9
> FMain.Populate_cbBedList.187: $res!BedName=first
> FMain.cbBedList_Click.169: We're in cbBedList_Click()!
> 
> I can try setting up a flag to kick me out of the _click until after the 
> control is populated, as someone else suggested, but that seems pretty 
> ugly.  Is there some way I can be sure I'm running 2.19 (in which you 
> noted this bug has been fixed) other than the ?/About menu, or is that 
> definitive? 
> 
> Thanks,
> 
> -Bill
> 
> Bill Richman - Lincoln, Nebraska
> Tilter at windmills, maker of pies in the sky, & curmudgeon
> email: bill at ...2350...  web: www.geektrap.com
> 
> 
> 
> 
> Benoît Minisini wrote:
> >> Benoît Minisini wrote:
> >>     
> >>>> I've got a really weird problem going on.  I've been working on this
> >>>> project for about a month, and today I decided to make some major
> >>>> changes to the user interface operates.  I moved some code around and
> >>>> delete some code, and now when I run it in the IDE, it randomly jumps
> >>>> into the sub that handles the click event for a combo-box control called
> >>>> cbBedList_Click().  The routine "Populate_cbBedList()" gets called by
> >>>> "Form_Open", and reads values from a database to populate the
> >>>> Combo-box.  As far as I can remember, I haven't changed the code for
> >>>> this form at all, but seemingly for no reason, when it hits line "178
> >>>> cbBedList.Clear" in the Populate sub, it starts executing the code in
> >>>> cbBedList_Click!   This generates an error because the cbBedList.index
> >>>> value isn't set, since it wasn't actually clicked.  If I remark out the
> >>>> contents of the Click event, the Populate routine finishes, although I
> >>>> still see the debug statement from line 169.  If I remark out everything
> >>>> from 168-173, it still runs fine (although obviously I don't get click
> >>>> events handled for the combo-box any longer!).  I'm pulling my hair
> >>>> out.  The stack backtrace shows:
> >>>>
> >>>> FMain.cbBedList_Click.169
> >>>> (native code)
> >>>> FMain.Populate_cbBedList.178
> >>>> FMain.Form_Open.26
> >>>>
> >>>> Setting a breakpoint at 178 and single-stepping shows exactly what the
> >>>> backtrace does; the next line to be executed after 178 is 169!  ANY
> >>>> ideas???  Please?
> >>>>
> >>>> ===
> >>>>
> >>>>
> >>>> 168 PUBLIC SUB cbBedList_Click()
> >>>> 169 DEBUG "We're in cbBedList_Click()!"
> >>>> 170 '  BedNum = BedList[cbBedList.index + 1]
> >>>> 171 '  DrawPlots($db, BedNum)
> >>>> 172
> >>>> 173 END
> >>>> 174
> >>>> 175 PUBLIC SUB Populate_cbBedList()
> >>>> 176  DIM sql AS String
> >>>> 177  'populate the bed selection listbox
> >>>> 178  cbBedList.Clear
> >>>> 179  sql = "select bedname, bednum from Beds"
> >>>> 180 $res = $db.Exec(sql)
> >>>> 181  DEBUG "$res.Count=" & $res.Count
> >>>> 182  FOR EACH $res
> >>>> 183    DEBUG "$res!BedName=" & $res!BedName
> >>>> 184    cbBedList.Add($res!BedName)
> >>>> 185    DEBUG "cbBedList.count=" & cbBedList.Count
> >>>> 186    DEBUG "$res!BedNum=" & $res!BedNum
> >>>> 187    BedList[cbBedList.count] = $res!BedNum
> >>>> 188  NEXT
> >>>> 189 END
> >>>>         
> >>> Which version of Gambas do you use? With which GUI component? On which
> >>> desktop?
> >>>       
> >> Gambas 2.7, gb.gui, Ubuntu Linux  2.6.27-16-generic, Gnome 2.24.1
> >>     
> >
> > The ComboBox.Clear() method should not raise Click event. This is an old bug 
> > that has been fixed since Gambas 2.7. You should upgrade Gambas, or handle 
> > that specific case in your code by hand (i.e. by using a global variable as a 
> > lock).
> >
> > Regards,
> >

Salut Bill,

in an simple example I tried with qt and gtk and that ComboBox_click()
is not fired here. 

gambas2 2.19.0   rev.2613

As you told, you striped of a lot of code.

One idea, make a Source archive (Ctrl+Alt+A) from your project, unpack
it in a different place, load it into the IDE, and try it.

   
-- 
Amicalement
Charlie

[OperatingSystem]
OperatingSystem=Linux
KernelRelease=2.6.24-26-generic
DistributionVendor=ubuntu
DistributionRelease="Ubuntu 8.04.3 LTS"

[System]
CPUArchitecture=i686
TotalRam=506932 kB

[Gambas]
Gambas1=gbx-1.0.17
Gambas1Path=/usr/bin/gbx

Gambas2=2.19.0                  rev.2613
Gambas2Path=/usr/local/bin/gbx2

Gambas3=2.99.0                  rev.2602 (can't compile actually)
Gambas3Path=/usr/local/bin/gbx3