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Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 5.4.0 RC
Affects Version/s: 5.1.1, 5.2.1, 5.3.0
Component/s: Widgets: Style Sheets
Labels:
- Reported_by_support_silver
Environment:
Windows 7
MacOS X 10.7

Commits:
29d3b9745b4ba57cd79c95a96659f97c85c3b4ee, c4430ed02301c456dd591c88049ee22bc7dd9725

Use any application stylesheet (also " ") with fusion style and use editable QComboBox which parent is set after setEditable. You will see incorrect style. Looks like it's mixed native/fusion style where item size height is from fusion but colors are from native. See attachments to see difference.

Issue can be also seen when using UI forms with layouts and style combination which doesn't care order when setting parent to combobox.

Here's simple example to reproduce and test issue:

#include <QApplication>
#include <QWidget>
#include <QStyleFactory>
#include <QComboBox>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    a.setStyle(QStyleFactory::create("fusion"));
    a.setStyleSheet(" ");
    // use empty style sheet to see correct style
//    a.setStyleSheet("");
    QWidget* w = new QWidget();
    QComboBox* test = new QComboBox();
    // or set parent before setEditable to see correct style
//    test->setParent(w);
    test->setEditable(true);
    test->addItem("test1");
    test->addItem("test2");
    test->addItem("test3");
    test->setParent(w);
    w->show();
    a.exec();
}