Unsolved how to populate and control the one qcombo box elements from another qcombo box
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Hi All,
I have two qcombo boxes are there if i have choose one parameter from first qcombo box associated with that parameters only need to display how to do it ...? -
Hi
Your sentence is a bit broken ;)
You mean ?
You have 2 combos
Combo 1 display
aaa
bbb
cccc
Combo 2 display
nothing yet.You click on aaa
now Combo 2 display
Related to aaaKind of way ?
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Your question is very unclear. try giving us an example of what you want to do.
Spoiler Alert:
99.9999999% chance the answer is "use the same model for the 2 combo boxes" -
first qcombox having ticket_printer,bill_acceptor
second qcombox having slot_admin,smartcard,tckt_in,tckt_out,bill_acceptor_in,bill_acceptor_outif i choose bill_acceptor in first qcombo box ,in second qcombo box need to show bill_acceptor_in,bill_acceptor_out only not all in second qcombo box .....
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Hi All,
Now you got it or shall i send the screen shot of the gui ? -
QAbstarctItemModel* model = new QStandardItemModel(this); model->insertColumn(0); model->insertRows(0,2); auto rootIdx = model->index(0,0); model->setData(rootIdx,"ticket_printer"); model->insertColumn(0,rootIdx); model->insertRows(0,4,rootIdx); model->setData(model->index(0,0,rootIdx),"slot_admin"); model->setData(model->index(1,0,rootIdx),"smartcard"); model->setData(model->index(2,0,rootIdx),"tckt_in"); model->setData(model->index(3,0,rootIdx),"tckt_out"); rootIdx = model->index(1,0); model->setData(rootIdx,"bill_acceptor"); model->insertColumn(0,rootIdx); model->insertRows(0,2,rootIdx); model->setData(model->index(0,0,rootIdx),"bill_acceptor_in"); model->setData(model->index(1,0,rootIdx),"bill_acceptor_out"); combo1->setModel(model); combo2->setModel(model); connect(combo1, QOverload<int>::of(&QComboBox::currentIndexChanged),[=](int idx){combo2->setRootModelIndex(model->index(idx,0)); });
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@VRonin said in how to populate and control the one qcombo box elements from another qcombo box:
QAbstarctItemModel* model = new QStandardItemModel(this);
@VRonin ,
Thanks a lot ,i have already dialog gui window everything i put into the qcombo boxes.here in this above code you are manually creating it ? -
Yes, Qt Designer doesn't allow to do this so you have to do it manually in the code.
That thing goes just after
ui->setupUi(this);
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This post is deleted! -
@VRonin
okay fine ... i will try this -
An alternative, suggested by @mrjj is to use a QSortFilterProxy model on the second combo to filter out options you don't want to see