src/msw/datecontrols.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/datecontrols.cpp
// Purpose:     implementation of date controls helper functions
// Author:      Vadim Zeitlin
// Created:     2008-04-04
// RCS-ID:      $Id$
// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/msw/wrapcctl.h"
#endif // WX_PRECOMP

#if wxUSE_DATEPICKCTRL || wxUSE_CALENDARCTRL

#include "wx/msw/private/datecontrols.h"

#include "wx/dynlib.h"

// ============================================================================
// implementation
// ============================================================================

bool wxMSWDateControls::CheckInitialization()
{
    // although we already call InitCommonControls() in app.cpp which is
    // supposed to initialize all common controls, in comctl32.dll 4.72 (and
    // presumably earlier versions 4.70 and 4.71, date time picker not being
    // supported in < 4.70 anyhow) it does not do it and we have to initialize
    // it explicitly

    // this is initially set to -1 to indicate that we need to perform the
    // initialization and gets set to false or true depending on its result
    static int s_initResult = -1; // MT-ok: used from GUI thread only
    if ( s_initResult == -1 )
    {
        // in any case do nothing the next time, the result won't change and
        // it's enough to give the error only once
        s_initResult = false;

        if ( wxApp::GetComCtl32Version() < 470 )
        {
            wxLogError(_("This system doesn't support date controls, please upgrade your version of comctl32.dll"));

            return false;
        }

#if wxUSE_DYNLIB_CLASS
        INITCOMMONCONTROLSEX icex;
        icex.dwSize = sizeof(icex);
        icex.dwICC = ICC_DATE_CLASSES;

        wxDynamicLibrary dllComCtl32(_T("comctl32.dll") , wxDL_VERBATIM);

        if ( dllComCtl32.IsLoaded() )
        {
            typedef BOOL (WINAPI *ICCEx_t)(INITCOMMONCONTROLSEX *);
            wxDYNLIB_FUNCTION( ICCEx_t, InitCommonControlsEx, dllComCtl32 );

            if ( pfnInitCommonControlsEx )
            {
                s_initResult = (*pfnInitCommonControlsEx)(&icex);
            }
        }
#endif // wxUSE_DYNLIB_CLASS
    }

    return s_initResult != 0;
}

#endif // wxUSE_DATEPICKCTRL || wxUSE_CALENDARCTRL
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/msw/datecontrols.cpp
	3	// Purpose: implementation of date controls helper functions
	4	// Author: Vadim Zeitlin
	5	// Created: 2008-04-04
	6	// RCS-ID: $Id$
	7	// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
	8	// Licence: wxWindows licence
	9	///////////////////////////////////////////////////////////////////////////////
	10
	11	// ============================================================================
	12	// declarations
	13	// ============================================================================
	14
	15	// ----------------------------------------------------------------------------
	16	// headers
	17	// ----------------------------------------------------------------------------
	18
	19	// for compilers that support precompilation, includes "wx.h".
	20	#include "wx/wxprec.h"
	21
	22	#ifdef __BORLANDC__
	23	#pragma hdrstop
	24	#endif
	25
	26	#ifndef WX_PRECOMP
	27	#include "wx/app.h"
	28	#include "wx/msw/wrapcctl.h"
	29	#endif // WX_PRECOMP
	30
	31	#if wxUSE_DATEPICKCTRL \|\| wxUSE_CALENDARCTRL
	32
	33	#include "wx/msw/private/datecontrols.h"
	34
	35	#include "wx/dynlib.h"
	36
	37	// ============================================================================
	38	// implementation
	39	// ============================================================================
	40
	41	bool wxMSWDateControls::CheckInitialization()
	42	{
	43	// although we already call InitCommonControls() in app.cpp which is
	44	// supposed to initialize all common controls, in comctl32.dll 4.72 (and
	45	// presumably earlier versions 4.70 and 4.71, date time picker not being
	46	// supported in < 4.70 anyhow) it does not do it and we have to initialize
	47	// it explicitly
	48
	49	// this is initially set to -1 to indicate that we need to perform the
	50	// initialization and gets set to false or true depending on its result
	51	static int s_initResult = -1; // MT-ok: used from GUI thread only
	52	if ( s_initResult == -1 )
	53	{
	54	// in any case do nothing the next time, the result won't change and
	55	// it's enough to give the error only once
	56	s_initResult = false;
	57
	58	if ( wxApp::GetComCtl32Version() < 470 )
	59	{
	60	wxLogError(_("This system doesn't support date controls, please upgrade your version of comctl32.dll"));
	61
	62	return false;
	63	}
	64
	65	#if wxUSE_DYNLIB_CLASS
	66	INITCOMMONCONTROLSEX icex;
	67	icex.dwSize = sizeof(icex);
	68	icex.dwICC = ICC_DATE_CLASSES;
	69
	70	wxDynamicLibrary dllComCtl32(_T("comctl32.dll") , wxDL_VERBATIM);
	71
	72	if ( dllComCtl32.IsLoaded() )
	73	{
	74	typedef BOOL (WINAPI ICCEx_t)(INITCOMMONCONTROLSEX );
	75	wxDYNLIB_FUNCTION( ICCEx_t, InitCommonControlsEx, dllComCtl32 );
	76
	77	if ( pfnInitCommonControlsEx )
	78	{
	79	s_initResult = (*pfnInitCommonControlsEx)(&icex);
	80	}
	81	}
	82	#endif // wxUSE_DYNLIB_CLASS
	83	}
	84
	85	return s_initResult != 0;
	86	}
	87
	88	#endif // wxUSE_DATEPICKCTRL \|\| wxUSE_CALENDARCTRL