Hello folks,

I've got a little issue with my custom StyledItemDelegate. I have got a list view where I want to add a remove button on the first column. This works pretty good but it is just visible in edit mode, but I want to have it visible when I hover the row.

Can anyone give me a hint how to implement this?

buttondelegate.h
Qt Code: 
  1. #ifndef BUTTONDELEGATE_H_
  2. #define BUTTONDELEGATE_H_
  3.  
  4. #include <QStyledItemDelegate>
  5.  
  6. class ButtonDelegate : public QStyledItemDelegate
  7. {
  8.    Q_OBJECT
  9.  
  10. public:
  11.    ButtonDelegate(QObject *aParent);
  12.  
  13.    QWidget *createEditor(
  14.       QWidget *aParent, 
  15.       const QStyleOptionViewItem &aOption,
  16.       const QModelIndex &aIndex) const;
  17.  
  18.    virtual void setEditorData(
  19.       QWidget *aEditor, 
  20.       const QModelIndex &aIndex) const;
  21.  
  22.    virtual void setModelData(
  23.       QWidget *aEditor, 
  25.       const QModelIndex &aIndex) const;
  26.  
  27.    virtual void updateEditorGeometry(
  28.       QWidget *aEditor,
  29.       const QStyleOptionViewItem &aOption, 
  30.       const QModelIndex &aIndex) const;
  31.  
  32. };
  33.  
  34. #endif
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Qt Code: 
  1. #include "buttondelegate.h"
  2.  
  3. #include <QToolButton>
  4. #include <QApplication>
  5.  
  6. //-----------------------------------------------------------------------------
  7. ButtonDelegate::ButtonDelegate(QObject *aParent)
  8.    : QStyledItemDelegate(aParent)
  9. {
  10. }
  11.  
  12. //-----------------------------------------------------------------------------
  13. QWidget *ButtonDelegate::createEditor(
  14.    QWidget *aParent, 
  15.    const QStyleOptionViewItem & /*aOption*/, 
  16.    const QModelIndex &aIndex) const
  17. {
  18.    if (aIndex.column() == 0) {
  19.       QToolButton *btn = new QToolButton(aParent);
  20.       btn->setText("...");
  21.       //btn->setAutoRaise(true);
  22.       btn->setCheckable(true);
  23.       btn->setFixedSize(QSize(16, 16));
  24.  
  25.       return btn;
  26.    }
  27.  
  28.    return NULL;
  29. }
  30.  
  31. //-----------------------------------------------------------------------------
  32. void ButtonDelegate::setEditorData(
  33.       QWidget * /*aEditor */, 
  34.       const QModelIndex & /*aIndex*/) const
  35. {
  36. }
  37.  
  38. //-----------------------------------------------------------------------------
  39. void ButtonDelegate::setModelData(
  40.    QWidget *aEditor, 
  42.    const QModelIndex &aIndex) const
  43. {
  44.    //QApplication::processEvents();
  45.    if (static_cast<QToolButton*>(aEditor)->isChecked())
  46.       aModel->removeRow(aIndex.row());
  47. }
  48.  
  49. //-----------------------------------------------------------------------------
  50. void ButtonDelegate::updateEditorGeometry(
  51.    QWidget *aEditor, 
  52.    const QStyleOptionViewItem &aOption, 
  53.    const QModelIndex & /*aIndex*/) const
  54. {
  55.    aEditor->setGeometry(aOption.rect);
  56. }
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And yes I have searched on the forum and found some things but they didn't help.

Kind regards,
Sven