How to resize contents in Qlistwidget

Bharth

hi,,,
im doing chat application,,if i resize application messages are not showing and showing only when i did full screen please help me

how to resize contents(QLIstWidgetItem) in QListwidget

thanks in advance

Kent-Dorfman

reimplement resizeEvent() for the child widget contained in the scroll area.

Bharth

i override resize event still messages are not resizing

Kent-Dorfman

@Bharth said in How to resize contents in Qlistwidget:

i override resize event still messages are not resizing

well, what is the substance of your resizeEvent() handler?

anything like:

this->resize(this->parent().size())

SGaist

Hi,

Can you show the code you are currently using ?

Bharth

this is code im adding listwidgetiem (chatpage.cpp)

       pListWidgetItem = new QListWidgetItem(ui->list_chat);
        ui->list_chat->addItem(pListWidgetItem);
        pChatCell = new ChatCell(this,pMessage,textmessage,strQuote,strDateTime,bFilter);
        pListWidgetItem->setSizeHint(pChatCell->sizeHint());
        ui->list_chat->setItemWidget(pListWidgetItem, pChatCell);

void ChatPage::resizeEvent(QResizeEvent *event)
{
QSize size = this->size();
if(pChatCell!=nullptr)
{
pChatCell->setMinimumWidth(size.width());
pChatCell->setMinimumHeight(size.height());
pChatCell->setMaximumWidth(size.width());
pChatCell->setMaximumHeight(size.height());
MainSubPage::resizeEvent(event);
pListWidgetItem->sizeHint();
}

}

here ChatCell is another widget

Bharth

@Kent-Dorfman
where i have to add this chatpage(Qlistwidget) or chatcell(QlistwidgetItem)

Kent-Dorfman

@Bharth said in How to resize contents in Qlistwidget:

void ChatPage::resizeEvent(QResizeEvent *event)
{
QSize size = this->size();
if(pChatCell!=nullptr)
{
pChatCell->setMinimumWidth(size.width());
pChatCell->setMinimumHeight(size.height());
pChatCell->setMaximumWidth(size.width());
pChatCell->setMaximumHeight(size.height());
MainSubPage::resizeEvent(event);
pListWidgetItem->sizeHint();
}
}

Why are you changing the size constraints within the resize event? That's what size policies are for. Also, what happens if you try to setMinimumSize to a value greater than the current maximum size, or conversely you try to setMaximumSize less than the current minimum?

All I was suggesting is that you override the child resizeEvent to consider the available space that the parent has given it. I believe a resize in the parent will recursively call the resize for all of its children in a breadth first search pattern.

SGaist

Why are you using a QScrollArea at all ?

QListView/Widget already handles that part if its content becomes bigger than the viewport.