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Qt-interest Archive, March 2002
Toolbar hangs under Win 98!

• Subject: Toolbar hangs under Win 98!
• From: "Dmytro Ivanets" <di@xxxxxxxxx>
• Date: Mon, 18 Mar 2002 14:38:26 +0200
• Importance: Normal
• Reply-to: <di@xxxxxxxxx>
• To: "Qt interest" <qt-interest@xxxxxxxxxxxxx>

Hi All!

I need to implement expandable toolbar in my app. Particularly, i need it to
be 5 buttons wide, but when user presses its last button it must expands and
show 14 buttons and vice versa. I use the following code to change toolbar
buttons number:

void CFullscreenToolBar::setButtons(CMainWnd *mainWnd, bool isFullSet)
{
    QIconSet is;
    CFullscreenWnd *parentWnd = dynamic_cast<CFullscreenWnd*>(parent());
    if(!parentWnd)
        throw CMAException("Can't get parent in
CFullscreenToolBar::setButtons()");

    clear();

    // drag area
    CLineHeader *line1 = new CLineHeader(this);
    line1->setFrameShadow(QFrame::Raised);
    line1->setMaximumHeight(32);
    line1->setLineWidth(1);
    line1->setFrameShape(QFrame::VLine);
    boxLayout()->addWidget(line1);

    // adding buttons
    if(isFullSet)
    {
        mainWnd->m_PrevAction->addTo(this);
        mainWnd->m_NextAction->addTo(this);
        mainWnd->m_AutoPlayAction->addTo(this);
        mainWnd->m_FullscreenPlayAction->addTo(this);
        mainWnd->m_SettingsAction->addTo(this);
        mainWnd->m_PrintPictureAction->addTo(this);
        mainWnd->m_FullscreenAction->addTo(this);

        mainWnd->m_BookmarksAction->addTo(this);
        QGuardedPtr<QToolButton> bookmarksButton =
            (QToolButton*) child("BA_action_button");
        if(bookmarksButton)
        {
            bookmarksButton->setPopup(mainWnd->m_BookmarksMenu);
            // setting the button popup menu delay
            bookmarksButton->setPopupDelay(0);
        }
        else
            throw CMAException("Can't get bookmarks button from bookmarks
action in "
                "CFullscreenToolBar::setButtons()");

        mainWnd->m_SendPictureViaEmailAction->addTo(this);
        mainWnd->m_FileSaveAsAction->addTo(this);
        mainWnd->m_FileExportToHTMLAction->addTo(this);
        mainWnd->m_FilePrintCalendarAction->addTo(this);
        QWhatsThis::whatsThisButton(this);
        parentWnd->m_ExpandAction->addTo(this);
        m_IsExpanded = true;

        is.setPixmap(QPixmap(xpmMinimize_toolbar), QIconSet::Small);
        parentWnd->m_ExpandAction->setIconSet(is);
    }
    else
    {
        mainWnd->m_PrevAction->addTo(this);
        mainWnd->m_NextAction->addTo(this);
        mainWnd->m_AutoPlayAction->addTo(this);
        mainWnd->m_FullscreenPlayAction->addTo(this);
        parentWnd->m_ExpandAction->addTo(this);
        m_IsExpanded = false;

        is.setPixmap(QPixmap(xpmMaximize_toolbar), QIconSet::Small);
        parentWnd->m_ExpandAction->setIconSet(is);
    }
}

This code works very well under Windows 2000, XP and NT, but hangs
application under Win98. So, what am i doing wrong?

Best regards,
Dmytro Ivanets