wxWidgets/interface/wx/wupdlock.h

/////////////////////////////////////////////////////////////////////////////
// Name:        wupdlock.h
// Purpose:     interface of wxWindowUpdateLocker
// Author:      wxWidgets team
// RCS-ID:      $Id$
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

/**
    @class wxWindowUpdateLocker

    This tiny class prevents redrawing of a wxWindow during its
    lifetime by using wxWindow::Freeze and
    wxWindow::Thaw methods. It is typically used for creating
    automatic objects to temporarily suppress window updates before a batch of
    operations is performed:

    @code
    void MyFrame::Foo()
        {
            m_text = new wxTextCtrl(this, ...);

            wxWindowUpdateLocker noUpdates(m_text);
            m_text-AppendText();
            ... many other operations with m_text...
            m_text-WriteText();
        }
    @endcode

    Using this class is easier and safer than calling
    wxWindow::Freeze and wxWindow::Thaw because you
    don't risk to forget calling the latter.

    @library{wxbase}
    @category{FIXME}
*/
class wxWindowUpdateLocker
{
public:
    /**
        Creates an object preventing the updates of the specified @e win. The
        parameter must be non-@NULL and the window must exist for longer than
        wxWindowUpdateLocker object itself.
    */
    wxWindowUpdateLocker(wxWindow* win);

    /**
        Destructor reenables updates for the window this object is associated with.
    */
    ~wxWindowUpdateLocker();
};