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use wxModalEvtLoop, made more code exception safe

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23648 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2003-09-17 23:34:07 +00:00
parent 4300caa7a6
commit 8c7f5f031b
1 changed files with 13 additions and 28 deletions
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41
src/msw/dialog.cpp
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@ -41,6 +41,7 @@
#include "wx/msw/private.h"
#include "wx/log.h"
#include "wx/evtloop.h"
#include "wx/ptr_scpd.h"
#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
#include <commdlg.h>
@ -135,38 +136,29 @@ END_EVENT_TABLE()
// wxDialogModalData
// ----------------------------------------------------------------------------
// this is simply a container for wxEventLoop and wxWindowDisabler which allows
// to have a single opaque pointer in wxDialog itself
// this is simply a container for any data we need to implement modality which
// allows us to avoid changing wxDialog each time the implementation changes
class wxDialogModalData
{
public:
wxDialogModalData() { m_windowDisabler = NULL; }
wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
void RunLoop(wxDialog *dialog)
void RunLoop()
{
m_windowDisabler = new wxWindowDisabler(dialog);
m_evtLoop.Run();
}
void ExitLoop()
{
delete m_windowDisabler;
m_windowDisabler = NULL;
m_evtLoop.Exit();
}
~wxDialogModalData()
{
wxASSERT_MSG( !m_windowDisabler, _T("forgot to call ExitLoop?") );
}
private:
wxEventLoop m_evtLoop;
wxWindowDisabler *m_windowDisabler;
wxModalEventLoop m_evtLoop;
};
wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData);
// ============================================================================
// implementation
// ============================================================================
@ -325,19 +317,12 @@ void wxDialog::DoShowModal()
hwndOldFocus = GetHwndOf(parent);
}
// before entering the modal loop, reset the "is in OnIdle()" flag (see
// comment in app.cpp)
extern bool wxIsInOnIdleFlag;
bool wasInOnIdle = wxIsInOnIdleFlag;
wxIsInOnIdleFlag = FALSE;
// enter the modal loop
m_modalData = new wxDialogModalData;
m_modalData->RunLoop(this);
delete m_modalData;
m_modalData = NULL;
wxIsInOnIdleFlag = wasInOnIdle;
{
wxDialogModalDataTiedPtr modalData(&m_modalData,
new wxDialogModalData(this));
modalData->RunLoop();
}
// and restore focus
// Note that this code MUST NOT access the dialog object's data