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Thread: QComboBox currentItem

  1. #1
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    Default QComboBox currentItem

    I have a question about QComboBox setCurrentText. I have already two default values in QComboBox Item1, Item2.

    Slot
    Qt Code:
    1. void CMainClass::readOut()
    2. {
    3.  
    4. QString str = process->readLineStdOut();
    5. comboBox->setCurrentText(str);
    6. }
    To copy to clipboard, switch view to plain text mode 

    The return value for str will be Item1 and if slot will triggerred again then str will be Item2. So return value will either Item1 or Item2 .I have problem if I use setCurrentText() method then it is overwriting my current value means ..the index 1 current value.

    How do I handle this through looping or through index such as setCurrentItem(int index) method..I want to do something like.. if str value is Item1 then I want to display that value on comboBox index 1 and if return value is Item2 then I want to display on index2.

    Thanks.

  2. #2
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    Default Re: QComboBox currentItem

    setCurrentText() changes the current item's text, not the current item. Either use QMap to map item texts to indices or go through the items until you find matching one and use setCurrentItem().

  3. #3
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    Default Re: QComboBox currentItem

    How do I handle this through looping or through index such as setCurrentItem(int index) method..I want to do something like.. if str value is Item1 then I want to display that value on comboBox index 1 and if return value is Item2 then I want to display on index2.

    Thanks.
    Try this
    Qt Code:
    1. int index = comboBox->findText(str);
    2. if(index != -1)
    3. {
    4. comboBox->setCurrentIndex(index);
    5. }
    To copy to clipboard, switch view to plain text mode 
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