source: trunk/src/qt3support/sql/q3sqlform.cpp@ 467

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#include "q3sqlform.h"

#ifndef QT_NO_SQL_FORM

#include "qsqlfield.h"
#include "q3sqlpropertymap.h"
#include "qsqlrecord.h"
#include "qstringlist.h"
#include "qwidget.h"
#include "qhash.h"

QT_BEGIN_NAMESPACE

class Q3SqlFormPrivate
{
public:
    Q3SqlFormPrivate() : propertyMap(0), buf(0), dirty(false) {}
    ~Q3SqlFormPrivate() { if (propertyMap) delete propertyMap; }
    QStringList fld;
    QHash <QString, QWidget*> wgt;
    QMap <QWidget*, QSqlField *> map;
    Q3SqlPropertyMap * propertyMap;
    QSqlRecord* buf;
    bool dirty;
};

/*!
    \class Q3SqlForm
    \brief The Q3SqlForm class creates and manages data entry forms
    tied to SQL databases.

    \compat

    Typical use of a Q3SqlForm consists of the following steps:
    \list
    \i Create the widgets you want to appear in the form.
    \i Create a cursor and navigate to the record to be edited.
    \i Create the Q3SqlForm.
    \i Set the form's record buffer to the cursor's update buffer.
    \i Insert each widget and the field it is to edit into the form.
    \i Use readFields() to update the editor widgets with values from
    the database's fields.
    \i Display the form and let the user edit values etc.
    \i Use writeFields() to update the database's field values with
    the values in the editor widgets.
    \endlist

    Note that a Q3SqlForm does not access the database directly, but
    most often via QSqlFields which are part of a Q3SqlCursor. A
    Q3SqlCursor::insert(), Q3SqlCursor::update() or Q3SqlCursor::del()
    call is needed to actually write values to the database.

    Some sample code to initialize a form successfully:

    \snippet doc/src/snippets/code/src_qt3support_sql_q3sqlform.cpp 0