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///////////////////////////////////////////////////////////////////////////////
// Name: wx/wupdlock.h
// Purpose: wxWindowUpdateLocker prevents window redrawing
// Author: Vadim Zeitlin
// Created: 2006-03-06
// Copyright: (c) 2006 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_WUPDLOCK_H_
#define _WX_WUPDLOCK_H_
#include "wx/window.h"
// ----------------------------------------------------------------------------
// wxWindowUpdateLocker prevents updates to the window during its lifetime
// ----------------------------------------------------------------------------
class wxWindowUpdateLocker
{
public:
// Prefer using the ctor below if possible, this ctor is only useful if
// Lock() must be called only conditionally.
wxWindowUpdateLocker() : m_win(NULL) { }
// create an object preventing updates of the given window (which must have
// a lifetime at least as great as ours)
explicit wxWindowUpdateLocker(wxWindow *win) : m_win(win) { win->Freeze(); }
// May be called only for the object constructed using the default ctor.
void Lock(wxWindow *win)
{
wxASSERT( !m_win );
m_win = win;
win->Freeze();
}
// dtor thaws the window to permit updates again
~wxWindowUpdateLocker()
{
if ( m_win )
m_win->Thaw();
}
private:
wxWindow *m_win;
wxDECLARE_NO_COPY_CLASS(wxWindowUpdateLocker);
};
#endif // _WX_WUPDLOCK_H_
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