ComboBox QStyle

[deMarco]

Hi,
I'm reimplementing the style for a combobox, but can't figure out how to override the list popup that appears when you click on the arrow..

Screenshot attached.. you can see my PE_Frame drawn around the list, but the background is still white, and i'd like to override that to black to match the rest of the box..

I've put a breakpoint on my drawControl, drawPrimitive etc methods but they're not being triggered when the list opens (except for the PE_Frame). I can't find any clues in the Qt source for this particular part of comboboxes.. so i'm abit stuck on this one, any ideas?

[talk2amulya]

QAbstractItemView * QComboBox::view () const
 
Returns the list view used for the combobox popup.
 
See also setView().

QAbstractItemView * QComboBox::view () const

Returns the list view used for the combobox popup.

See also setView().

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this is the view of the listbox u see after u click on the down button..u should use this view to draw ur background color..should be pretty simple

[talk2amulya]

to be more specific, try using

void QWidget::setBackgroundRole ( QPalette::ColorRole role )

on the view that u get from view()

[Cruz]

Why don't you use style sheets to customize the looks of your combo box? You could do away without any coding at all.

[talk2amulya]

i guess u chose not to do using stylesheets cuz either u hv an older version of qt..or u just didnt know u can do it other ways here is how u do using stylesheets:

QComboBox QAbstractItemView{
background-color: black;
}

for further reference: http://doc.trolltech.com/4.3/stylesheet.html

[deMarco]

great, thanks guys.. turned out to be the QPalette::Base colour. I missed this little snippet in the documentation:

Used mostly as the background color for text entry widgets, but can also be used
for other painting - such as the background of combobox drop down lists and toolbar
handles. It is usually white or another light color.

Used mostly as the background color for text entry widgets, but can also be used
for other painting - such as the background of combobox drop down lists and toolbar
handles. It is usually white or another light color.

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and no i didn't know about style sheets, will definately read up on them for my next project.. i've done too much qstyle work on this one to change over

[vkincaid]

I'm trying to use style sheets to add spaces before and after each drop down item so that it can be selected more easily with a finger in a touch screen but haven't found out how. Does anyone know what the right option is?

Here's my stylesheet for QComboBox:

QComboBox {
    color: white;
    border-color: white;
    background-color: qlineargradient(x1: 0, y1: 0, x2:0, y2: 1, stop: 0 beige, stop: 1 black);
    border: 1px solid white;
    border-radius: 3px;
    padding: 1px 18px 1px 3px;
    min-width: 6em;
    font: 15pt "Sans Serif";
}
 
QComboBox QAbstractItemView {
    border: 2px solid darkgray;
    color: white;
    padding: 10px 10px 10px 10px;
    selection-background-color: lightgray;
}

QComboBox {
    color: white;
    border-color: white;
    background-color: qlineargradient(x1: 0, y1: 0, x2:0, y2: 1, stop: 0 beige, stop: 1 black);
    border: 1px solid white;
    border-radius: 3px;
    padding: 1px 18px 1px 3px;
    min-width: 6em;
    font: 15pt "Sans Serif";
}

QComboBox QAbstractItemView {
    border: 2px solid darkgray;
    color: white;
    padding: 10px 10px 10px 10px;
    selection-background-color: lightgray;
}

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