Is it possible to add a widget into QComboBox ?

Hi All,

I suppose to add a widget into QComboBox to clear all the items in it,
just like google toolbar search box, inside google toolbar search box there is
an special item named "clear history search" .
Can QT4 do that?

Thanks advance for your help.
hb

you should subclass QComboBox and add such functionality.

Hi Spirit,

Thanks for the clue,I'll try to do that.

Best regards,
hb

I implement a "google-search bar" as below,hope it will help others :)

Code:

---

//mytoolbar.h
#ifndef MYTOOLBAR_
#include <QComboBox>
#include <QPushButton>
#include <QListWidget>
 
class myQListWidget:public QListWidget
{
public:
    myQListWidget(QWidget * parent = 0 ):QListWidget(parent)
    {
        setViewportMargins(0,0,0,30); //we'll put "clear history" button in the bottom margin
    }
};
class myToolBar:public QComboBox
{
public:
    myToolBar(QWidget * parent = 0);
    void showPopup ();
    void hidePopup ();
private:
    QPushButton *bt_;
    myQListWidget *te_;
 
};
 
#endif

---

Code:

---

#include "mytoolbar.h"
 
myToolBar::myToolBar(QWidget * parent  ):QComboBox(parent)
{
    setStyleSheet("QPushButton {text-align:center;color:blue;text-decoration:underline;font-family:arial; background-color:#d4d0c8; }");
    setEditable(true);
    setFrame(false);
    resize(300,size().height());
 
    te_ = new myQListWidget(this);
    setView(te_);
    setModel(te_->model());
    te_->viewport()->setBackgroundRole(backgroundRole()); //change the background color of popup list
 
 
    bt_ = new QPushButton("clear hisroty",view());
    bt_->setFlat(true);
    bt_->setVisible(false);
 
    connect(bt_,SIGNAL(clicked(bool)),this,SLOT(clear()));
 
}
 
void myToolBar::showPopup ()
{
   QComboBox::showPopup ();
   bt_->setVisible(true);
   //move button to right-down corner
   QRect qRect(view()->geometry());
   int iXpos=qRect.width()-bt_->width();
   int iYpos=qRect.height()-bt_->height();
   bt_->move(iXpos,iYpos);
 
}
void myToolBar::hidePopup ()
{
   QComboBox::hidePopup ();
    bt_->setVisible(false);
}

---

http://lh3.ggpht.com/_BVLRTqIDWuU/Su...jE/toolbar.png