/* static */
int wxApp::GetComCtl32Version()
{
// cache the result
//
// NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,
// but as its value should be the same both times it doesn't matter
static int s_verComCtl32 = -1;
if ( s_verComCtl32 == -1 )
{
// we're prepared to handle the errors
wxLogNull noLog;
// we don't want to load comctl32.dll, it should be already loaded but,
// depending on the OS version and the presence of the manifest, it can
// be either v5 or v6 and instead of trying to guess it just get the
// handle of the already loaded version
wxLoadedDLL dllComCtl32(wxT("comctl32.dll"));
if ( !dllComCtl32.IsLoaded() )
{
s_verComCtl32 = 0;
return 0;
}
// try DllGetVersion() for recent DLLs
s_verComCtl32 = CallDllGetVersion(dllComCtl32);
// if DllGetVersion() is unavailable either during compile or
// run-time, try to guess the version otherwise
if ( !s_verComCtl32 )
{
// InitCommonControlsEx is unique to 4.70 and later
void *pfn = dllComCtl32.GetSymbol(wxT("InitCommonControlsEx"));
if ( !pfn )
{
// not found, must be 4.00
s_verComCtl32 = 400;
}
else // 4.70+
{
// many symbols appeared in comctl32 4.71, could use any of
// them except may be DllInstall()
pfn = dllComCtl32.GetSymbol(wxT("InitializeFlatSB"));
if ( !pfn )
{
// not found, must be 4.70
s_verComCtl32 = 470;
}
else
{
// found, must be 4.71 or later
s_verComCtl32 = 471;
}
}
}
}
return s_verComCtl32;
}
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;
// see comment in wxApp::GetComCtl32Version() explaining the
// use of wxLoadedDLL
wxLoadedDLL dllComCtl32(wxT("comctl32.dll"));
if ( dllComCtl32.IsLoaded() )
{
wxLogNull noLog;
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;
}
bool
wxDatePickerCtrl::Create(wxWindow *parent,
wxWindowID id,
const wxDateTime& dt,
const wxPoint& pos,
const wxSize& size,
long style,
const wxValidator& validator,
const wxString& name)
{
// 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
static bool s_initDone = false; // MT-ok: used from GUI thread only
if ( !s_initDone )
{
#ifndef __WXWINCE__
if ( wxApp::GetComCtl32Version() < 470 )
{
wxLogError(_("This system doesn't support date picker control, please upgrade your version of comctl32.dll"));
return false;
}
#endif
#if wxUSE_DYNLIB_CLASS
INITCOMMONCONTROLSEX icex;
icex.dwSize = sizeof(icex);
icex.dwICC = ICC_DATE_CLASSES;
wxDynamicLibrary dllComCtl32(
#ifdef __WXWINCE__
_T("commctrl.dll")
#else
_T("comctl32.dll")
#endif
, wxDL_VERBATIM);
if ( dllComCtl32.IsLoaded() )
{
typedef BOOL (WINAPI *ICCEx_t)(INITCOMMONCONTROLSEX *);
wxDYNLIB_FUNCTION( ICCEx_t, InitCommonControlsEx, dllComCtl32 );
if ( pfnInitCommonControlsEx )
{
(*pfnInitCommonControlsEx)(&icex);
}
s_initDone = true;
}
#endif
}
// use wxDP_SPIN if wxDP_DEFAULT (0) was given as style
if ( !(style & wxDP_DROPDOWN) )
style |= wxDP_SPIN;
// initialize the base class
if ( !CreateControl(parent, id, pos, size, style, validator, name) )
return false;
// create the native control
if ( !MSWCreateControl(DATETIMEPICK_CLASS, wxEmptyString, pos, size) )
return false;
if ( dt.IsValid() || (style & wxDP_ALLOWNONE) )
SetValue(dt);
else
SetValue(wxDateTime::Today());
return true;
}
