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Thread: QSpinBox or QLabels

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    Default QSpinBox or QLabels

    I like the ability to add a suffix to a QSpinBox and do not know how to do what I am proposing to do. When I move the mouse over a QGLWidget I need to be able to display the coordinates of the mouse as they move. I want to be able to update the value while keeping the label of the units next to the number, much like the suffix does for the QSpinBox. Is there a way to make the QSpinBox uneditable and to remove the arrows from it...basically a labal with a suffix? Or is there an efficient way to layout 2 labels so the suffix is always correctly spaced from the mouse coordinate while being right aligned to the window? Or would it just be easiest to use one label and always add the suffix manually even though it will never change? Thanks!

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    Default Re: QSpinBox or QLabels

    It would be easier to use a label.

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    Default Re: QSpinBox or QLabels

    Try this way:
    Qt Code:
    1. box.setButtonSymbols(QAbstractSpinBox::NoButtons);
    2. box.setReadOnly(true);
    To copy to clipboard, switch view to plain text mode 

  4. The following user says thank you to bender86 for this useful post:

    ToddAtWSU (27th November 2007)

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    Cool Re: QSpinBox or QLabels

    Quote Originally Posted by bender86 View Post
    box.setButtonSymbols(QAbstractSpinBox::NoButtons);[/CODE]
    Where do you see QAbstractSpinBox::NoButtons? All I see is QAbstractSpinBox::UpDownArrows and QAbstractSpinBox::PlusMinus. I would imagine this worked but I do not see this anywhere in the docs. Thanks for your further clarification.

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    Default Re: QSpinBox or QLabels

    Quote Originally Posted by ToddAtWSU View Post
    Where do you see QAbstractSpinBox::NoButtons?
    It was introduced in Qt 4.3.
    J-P Nurmi

  7. The following user says thank you to jpn for this useful post:

    ToddAtWSU (27th November 2007)

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    Default Re: QSpinBox or QLabels

    Quote Originally Posted by jpn View Post
    It was introduced in Qt 4.3.
    Thanks. I followed the other link and it was in 4.2. I am still unfortunately at 4.1. I know I need to upgrade soon...but can't right this minute. Thanks!

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    Default Re: QSpinBox or QLabels

    A read only spinbox yields no advantage over a regular line edit. The text is assembled every time you change it anyway, so there are no performance benefits of using QSpinBox over QLineEdit. And if you want to display something, you should use QLabel or friends, not QSpinBox or QLineEdit.

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    Default Re: QSpinBox or QLabels

    Quote Originally Posted by wysota View Post
    A read only spinbox yields no advantage over a regular line edit. The text is assembled every time you change it anyway, so there are no performance benefits of using QSpinBox over QLineEdit. And if you want to display something, you should use QLabel or friends, not QSpinBox or QLineEdit.
    The only advantage I am looking for is so I don't have to remember to add the label to my QLabel every time I change it. With the SpinBox's suffix feature, this allows me to just change the value and never worry about forgetting to add the suffix at the end of my label.

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    Default Re: QSpinBox or QLabels

    What kind of argument is this? Ever heard of functions or methods?

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    Default Re: QSpinBox or QLabels

    haha...yeah I just never think of writing functions for something so simple like that...i admit a bad argument and I think i will just write a simple function!

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    Default Re: QSpinBox or QLabels

    My point is that you should use proper components for proper tasks. For example you shouldn't use a combobox if you have only two choices - use radio buttons or a checkbox instead. If you want to display text, don't use input widgets. These are rules of good ui design.

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