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Old 09-05-2003, 05:02 AM   #1
schultzm
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Registered: Sep 2003
Location: Münster, Germany
Distribution: suse 8.1
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Post Number of "connect"-commands limited (Qt/KDE-programming)?


Hi there,

I've a problem:
I tried to write a program using Qt. One of my dialogs (its a class derived from public KDialogBase) includes a number of QCheckBoxes. Each QCheckBox gets a QToolTip with the command QToolTip::add (). You can choose, wether all should be displayed, or not. (The QCheckBoxes are organized in seven packages you can choose for display.)

So far, so good. Everything works fine.

But it works only as long as I don't create 272 QCheckBoxes. Then, the program crashes.


-------------------------------
The crash-handler of KDE shows the following message:
[New Thread 1024 (LWP 1329)]
0x40b2e8c9 in wait4 () from /lib/libc.so.6
#0 0x40b2e8c9 in wait4 () from /lib/libc.so.6
#1 0x40ba9c90 in __DTOR_END__ () from /lib/libc.so.6
#2 0x400ef555 in KCrash::defaultCrashHandler(int) ()
from /opt/kde3/lib/libkdecore.so.4
#3 0x40d3f12b in pthread_sighandler () from /lib/libpthread.so.0
#4 <signal handler called>
#5 0x405c71b2 in QObject::connect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/libqt-mt.so.3
#6 0x406ddb86 in QTipManager::add(QRect const&, QWidget*, QRect const&, QString const&, QToolTipGroup*, QString const&, QToolTip*, bool) ()
from /usr/lib/libqt-mt.so.3
#7 0x406ddc24 in QTipManager::add(QWidget*, QRect const&, QString const&, QToolTipGroup*, QString const&, QToolTip*, bool) () from /usr/lib/libqt-mt.so.3
#8 0x406df59a in QToolTip::add(QWidget*, QString const&) ()
from /usr/lib/libqt-mt.so.3
#9 0x080776c1 in KartenWahlDialog::DistributeCheckBoxes(...)



-------------------------------
("KartenWahlDialog::DistributeCheckBoxes()" is my function.)


When I changed the functionality of my program, no longer using QToolTips but connect-commands instead, the program does exactly the same: Crashing, if I want to show all 272 possible QCheckBoxes, otherwise (~40 QCheckBoxes less) it works fine.

So I ask myself wether the number of "connect"-commands I can use is limited and when it is so, I can expand the limit.

By the way: If I disable the "QToolTip::add ()"-command, the 272 QCheckBoxes are shown without any problems.

For I need displaying the Tooltips if it's posiible, I ask YOU: Can anybody help me?

greetings

schultzm
 
Old 09-05-2003, 01:21 PM   #2
jinksys
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Can you include your code?
 
Old 09-06-2003, 09:05 AM   #3
schultzm
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Registered: Sep 2003
Location: Münster, Germany
Distribution: suse 8.1
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Here is my code:

QCheckBox * KartenWahlDialog::DistributeCheckBoxes (const USHORT group,
const QString cardLabelText,
const QString cardTooltip,
const QString checkBoxName,
QButtonGroup * stadt,
QButtonGroup * gebiet, QButtonGroup * magie,
QButtonGroup * landschaft, QButtonGroup * strasse,
QButtonGroup * einheit, QButtonGroup * aktion,
QButtonGroup * ereignis)
{
QCheckBox * cardBox;
switch (group)
{
case GGRFLOTTE:
case GSTADTAUSBAU:
//cardBox = new QCheckBox (cardLabelText, stadt, checkBoxName);
return new QCheckBox (cardLabelText, stadt, checkBoxName);
break;
(... some more case...)
}


//Tooltip hinzufügen
QToolTip::add (cardBox, cardTooltip);
};

The function is called in a for-loop one time for each button which is to display.

Last edited by schultzm; 09-06-2003 at 09:08 AM.
 
Old 09-06-2003, 09:09 AM   #4
schultzm
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Location: Münster, Germany
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Can it be just a problem with my memory?
 
  


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