It seems I have a problem with the findchild function, here are more infos:
The compiling part is ok.
The program launches.
Aaand when I enter the slot, (with findchild), it crashes.
So why do I affirm its because of findchild? Because i debbugged, its as simple as that.
To be precise, I can get the pointer, but not use it :( .
Here's some code
QTextEdit er = this->findChild<QTextEdit>("mainte");
er->append(tr("<em>Tentative de connexion en cours...</em>"));
socket->abort(); socket->connectToHost(this->findChild<QLineEdit*>("servedit")->text(), this->findChild<QSpinBox*>("serportspin")->value());
when I debug, the problem comes up on the 4th line (er->append...)
Any reply is much appreciated
Did you consider that 'er' could be zero when then QTextEdit doesn't have children??
That will cause a crash.
Also, you are searching for your child widgets with names. Did you set those names on the specific widgets ?
In my honest opinion it is not good to search children by name, this is not a object orientated way of thinking. The way you do it causes classes to have multiple dependencies and updates on a class effect all the other classes, but of course sometimes you must ;-)
Sorry for answering late this time I am bringing new pieces of information. If I qDebug() er, er is "QObject(0x0)" so yeah its nothing.
and then i'm trying to get a pointer, I don't know if names work with these. Here's some more code:
@Mainwin::Mainwin(QWidget *parent) : QWidget(parent)
QTextEdit *mainte = new QTextEdit;
Itt's also maybe because of the layout...
mainte is the name of the variable holding your QTextEdit, no the name of the QTextEdit.
If you really want to find your QTextEdit with a name you have to call "setObjectName":http://qt-project.org/doc/qt-5.0/qtcore/qobject.html#objectName-prop
Ah ok thank you so much I just facepalmed myself reading this, thanks once again SGalst and all the others