QComboBox does not update size

Banshee

Hello!
I have a problem with the QComboBox. I use two Combo Boxes with different content in a Dialog. Below every Box, there is a "show all" checkbox, to show more content.
I fill the ComboBox with items and if I exec(), everything is fine (i.e. the ComboBox has the right size).
The problem occurs if i now press the "show all"-checkboxes, because the ComboBox does not change its size, even if the items are now larger.
I tried many things (SizePolicy, updateGeometry, adjustSize etc.), ones I call exec(), the size of the ComboBox seems unchangeable :(
Heres some of my code, if you need more, let me know:

@matchDialog::matchDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::matchDialog)
{
ui->setupUi(this);

connect(ui->buttonBox,SIGNAL(accepted()),this,SLOT(ok()));
connect(ui->buttonBox,SIGNAL(rejected()),this,SLOT(cancel()));

connect(ui->checkBoxA,SIGNAL(toggled(bool)),this,SLOT(showAllA(bool)));
connect(ui->checkBoxV,SIGNAL(toggled(bool)),this,SLOT(showAllV(bool)));

}
void matchDialog::addDevice(QString type, QString name,int index){
if (type == "audioDevice"){
audio << QPair<QString, int> (name,index);
ui->comboBoxAudio->addItem(name,QVariant(index));
}else{
ui->comboBoxVideo->addItem(name,QVariant(index));
video << QPair<QString, int> (name,index);
}
all << QPair <QString, int>(name,index);

}

void matchDialog::showAllA(bool checked){
ui->comboBoxAudio->clear();
if(checked)
for(int i=0;i< all.size();i++)
ui->comboBoxAudio->addItem(all.at(i).first,QVariant(all.at(i).second));
else
for(int i=0;i< audio.size();i++)
ui->comboBoxAudio->addItem(audio.at(i).first,QVariant(audio.at(i).second));

this->adjustSize();

}
void matchDialog::showAllV(bool checked){
ui->comboBoxVideo->clear();
if(checked)
for(int i=0;i< all.size();i++)
ui->comboBoxVideo->addItem(all.at(i).first,QVariant(all.at(i).second));
else
for(int i=0;i< video.size();i++)
ui->comboBoxVideo->addItem(video.at(i).first,QVariant(video.at(i).second));

this->adjustSize();

}@

Thank you and Greetings
Matthias

Banshee

Update & Bump:

Things are getting weirder. Now I tried calling "this->adjustSize();" at the end of "matchDialog::showAllV" and "matchDialog::showAllA".
The result: If i click on the "checkBoxV" AND THEN on "checkBoxA", the size is adjusted properly. If I just click "checkBoxV" muliple times WIHTOUT clicking "checkBoxA", the size is adjust the wrong way (i.e. too small for big contents, too big for small contents).

I hope anyone can help, the problem is really annoying :(.

bodzio131

I guess problem is in your layout setting. It would be usefull to see your ui file.

Banshee

Thank you for your reply :)
I don't know where the problem could be, so i post the full ui file:
@<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>matchDialog</class>
<widget class="QDialog" name="matchDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>204</width>
<height>125</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QGroupBox" name="groupBoxVideo">
<property name="title">
<string>Video-Device</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_3">
<item>
<widget class="QComboBox" name="comboBoxVideo">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="maxVisibleItems">
<number>10</number>
</property>
<property name="sizeAdjustPolicy">
<enum>QComboBox::AdjustToContents</enum>
</property>
</widget>
</item>
<item>
<widget class="QCheckBox" name="checkBoxV">
<property name="text">
<string>Show All</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBoxAudio">
<property name="title">
<string>Audio-Device</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<widget class="QComboBox" name="comboBoxAudio">
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="sizeAdjustPolicy">
<enum>QComboBox::AdjustToContents</enum>
</property>
<property name="frame">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QCheckBox" name="checkBoxA">
<property name="text">
<string>Show All</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
</layout>
</item>
<item>
<widget class="QDialogButtonBox" name="buttonBox">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="standardButtons">
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</item>
</layout>
</widget>
<resources/>
<connections>
<connection>
<sender>buttonBox</sender>
<signal>accepted()</signal>
<receiver>matchDialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel">
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>buttonBox</sender>
<signal>rejected()</signal>
<receiver>matchDialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel">
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>
@