[SOLVED] Problem with QMessageBox

valeSimu

I would like to create a QMessageBox::critical which would automatically adapt its size depending on the size of the content (the message text). I tried but I have some problems...

This is the message I would like to display on the QMessageBox

@ std::wstring tmpStrEx;
QDomNode tmpNodeParent = noderemoved;

while(!tmpNodeParent.isNull() && tmpNodeParent.nodeName().toStdWString() != L"root"){
std::wstring tmpStrTmp;

tmpStrTmp = L"<"
           + tmpNodeParent.nodeName().toStdWString()
           + L" nm=\""
           + tmpNodeParent.toElement().attribute(QS(_T("nm")), QS(_T("undef")) ).toStdWString()
           + L"> ";
}

QString mex = "Error while reading vector.<br/><br/>Please check in:<br/><br/> " + tmpStrTmp ;@

tmpStrTmp can be something like <vct nm="name"> <vcx nm="xyz">

I tried in these ways to build the QMessageBox:

First a simple:

@ QMessageBox::critical(this, "Error", mex);@

This shows half message without the content in tmpStrTmp like this:

Error while reading vector.

Please check in:

I thought tmpStrTmp was the problem but if I put only tmpStrTmp in the QMessageBox, it shows its content. So, I thought it was a problem of space and I tried these two ways:

@
QMessageBox msgBox;
QSpacerItem* spacer = new QSpacerItem(500, 500, QSizePolicy::Minimum, QSizePolicy::Expanding);
msgBox.setTextFormat(Qt::RichText);
msgBox.setText( mex );
QGridLayout* layout = (QGridLayout*)msgBox.layout();
layout->addItem(spacer, layout->rowCount(), 0, 1, layout->columnCount());
msgBox.exec();@

@ QMessageBox *box = new QMessageBox::QMessageBox(QMessageBox::critical, "Error", mex);

 QGridLayout *layout = qobject_cast<QGridLayout *>(box->layout(&#41;);
 if (layout) {
    QTextEdit *edit = new QTextEdit(mex);
    edit->setReadOnly(true);
    layout->addWidget(edit, 0, 1);
 }
 box->exec(&#41;;
 delete box;@

but without success...any help? thanks

clochydd

Hi, what happens if you analyse your QString by

@
qDebug() << tmpStrTmp;
@

or show the QMessagBox with tmpStrTmp only?

valeSimu

yes, if I show only tmpStrTmp in the QMessageBox, it shows its content.

clochydd

I overlooked that - so your problem is the size of your QMessageBox?
Can you describe how it looks or post a picture?

valeSimu

By using this code

@ QString mex = "Error while reading vector. Please check in: " + tmpStrTmp ;
QMessageBox::critical(this, "Error", mex);@

the QMessageBox looks like this:

https://drive.google.com/a/hydros.ch/file/d/0B7vJt21ZesT0bkJMY2Y2dFFKNTA/edit?usp=sharing

and with this code

@ QString mex = tmpStrTmp ;
QMessageBox::critical(this, "Error", mex);@

the QMessageBox looks like this:

https://drive.google.com/a/hydros.ch/file/d/0B7vJt21ZesT0SGIwN3FxM0Q1c2s/edit?usp=sharing

Can you see the photos?

valeSimu

So I don't think that the problem is the size cause, the dialog adapt itself according to the content...

clochydd

I can see the pictures and I think I understand your problem now and will try to simulate it here.

clochydd

Hi,
I made some tests with your messages and I think your problem has something to do with the special characters in your tmpStrTmp.

valeSimu

I thought it too, maybe because there are < and >? but why I can display tmpStrTmp without problem but with the rest of the message not? strange

clochydd

You are right: it really sounds strange!
I would do this: Change all special chars by a placeholder then rebuild the string by replacing the placeholders step by step with the specials.

valeSimu

you know? I solved the problem....< and > caused the problem, I replaced them with & lt; and & gt; and worked! I think because "mex" contains html tag ( ) and so it interpreted all like html....I don't know how to explain it with the right words, but I hope you understood. Thank you Clochydd, I really appreciate your help! Have a nice day? evening? bye

clochydd

You are welcome, valeSimu!
Please sign your thread as solved, by adding a prepending [SOLVED] to your first post.
Have a nice day, too!