QScrollArea issues



  • Hey everyone,

    I've been pulling my hair out over the QScrollArea for the past couple of days. What I want to do is this: I want to make an area on my window which will contain a variable number of rows of lineEdit and pushButton widgets. They are laid out in a gridLayout which I have put in a frame. That frame is put into a scrollArea so that when more rows are added, they scan be scrolled to.

    I have had zero success using QtDesigner. I drag the scrollArea to the window, drag the frame to the scrollArea and then the gridLayout to the frame but when running, there are no scroll bars.

    I have had some success programming it by hand.

    @
    scrollArea = new QScrollArea(tab_2);
    fra_ds_segments = new QFrame;
    gridLayout_2 = new QGridLayout(fra_ds_segments);

    fra_ds_segments->setLayout(gridLayout_2);
    scrollArea->setWidget(fra_ds_segments);

    scrollArea->setGeometry(10, 210, 855, 201);

    <<add lines of lineEdits and pushButtons to gridLayout_2>>

    fra_ds_segments->resize(gridLayout_2->sizeHint());
    @

    This seems to work OK though I'd rather calculate the size of scrollArea rather than hard-code it. I have hard-coded it to an area which doesn't need vertical scroll bars for 5 lines but will for any more than that. So as an aside, does anyone know how to calculate the proper width of a scrollArea to hold certain items an not need scroll bars?

    The main issue is...how can I use a scrollArea this way within Designer?

    Thanks!



  • Any progress with this? I'm having the same issue.
    My situation also requires that the contents of the scroll area change dynamically. After a button push, widgets are supposed to be added to one of two groupboxes inside the scroll area. I believe I'm taking a fairly typical approach with Qt Designer:

    • Add Scroll Area to main widget.
    • Drop groupboxes inside ScrollAreaContents (created automatically by Qt Designer when placing ScrollArea)
    • Set Scroll Area layout with "Lay Out">"Lay Out Vertically"
    • Set main widget layout likewise

    Thanks





  • Hi,

    I actually ended up giving up and went on to using a QTableView instead. It worked out better for me. Good luck.

    [quote author="tim.sullivan" date="1344881283"]Any progress with this? I'm having the same issue.
    My situation also requires that the contents of the scroll area change dynamically. After a button push, widgets are supposed to be added to one of two groupboxes inside the scroll area. I believe I'm taking a fairly typical approach with Qt Designer:

    • Add Scroll Area to main widget.
    • Drop groupboxes inside ScrollAreaContents (created automatically by Qt Designer when placing ScrollArea)
    • Set Scroll Area layout with "Lay Out">"Lay Out Vertically"
    • Set main widget layout likewise

    Thanks
    [/quote]


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