/////////////////////////////////////////////////////////////////////////////
-// Name: msgdlg.cpp
+// Name: src/msw/msgdlg.cpp
// Purpose: wxMessageDialog
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "msgdlg.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
-#ifndef WX_PRECOMP
-#include <stdio.h>
-#include "wx/defs.h"
-#include "wx/utils.h"
-#include "wx/dialog.h"
+#if wxUSE_MSGDLG
+
#include "wx/msgdlg.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/utils.h"
+ #include "wx/dialog.h"
+ #include "wx/hashmap.h"
#endif
#include "wx/msw/private.h"
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define wxDIALOG_DEFAULT_X 300
-#define wxDIALOG_DEFAULT_Y 300
+// For MB_TASKMODAL
+#ifdef __WXWINCE__
+#include "wx/msw/wince/missing.h"
+#endif
IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
-wxMessageDialog::wxMessageDialog(wxWindow *parent, const wxString& message, const wxString& caption,
- long style, const wxPoint& pos)
+// there can potentially be one message box per thread so we use a hash map
+// with thread ids as keys and (currently shown) message boxes as values
+//
+// TODO: replace this with wxTLS once it's available
+WX_DECLARE_HASH_MAP(unsigned long, wxMessageDialog *,
+ wxIntegerHash, wxIntegerEqual,
+ wxMessageDialogMap);
+
+namespace
{
- m_caption = caption;
- m_message = message;
- m_dialogStyle = style;
- m_parent = parent;
+
+wxMessageDialogMap& HookMap()
+{
+ static wxMessageDialogMap s_Map;
+
+ return s_Map;
}
-int wxMessageDialog::ShowModal(void)
+} // anonymous namespace
+
+/* static */
+WXLRESULT wxCALLBACK
+wxMessageDialog::HookFunction(int code, WXWPARAM wParam, WXLPARAM lParam)
{
- HWND hWnd = 0;
- if (m_parent) hWnd = (HWND) m_parent->GetHWND();
- unsigned int msStyle = MB_OK;
- if (m_dialogStyle & wxYES_NO)
- {
- if (m_dialogStyle & wxCANCEL)
- msStyle = MB_YESNOCANCEL;
- else
- msStyle = MB_YESNO;
+ // Find the thread-local instance of wxMessageDialog
+ const DWORD tid = ::GetCurrentThreadId();
+ wxMessageDialogMap::iterator node = HookMap().find(tid);
+ wxCHECK_MSG( node != HookMap().end(), false,
+ wxT("bogus thread id in wxMessageDialog::Hook") );
+
+ wxMessageDialog * const wnd = node->second;
+
+ const HHOOK hhook = (HHOOK)wnd->m_hook;
+ const LRESULT rc = ::CallNextHookEx(hhook, code, wParam, lParam);
+
+ if ( code == HC_ACTION && lParam )
+ {
+ const CWPRETSTRUCT * const s = (CWPRETSTRUCT *)lParam;
- if (m_dialogStyle & wxNO_DEFAULT)
- msStyle |= MB_DEFBUTTON2;
- }
+ if ( s->message == HCBT_ACTIVATE )
+ {
+ // we won't need this hook any longer
+ ::UnhookWindowsHookEx(hhook);
+ wnd->m_hook = NULL;
+ HookMap().erase(tid);
- if (m_dialogStyle & wxOK)
- {
- if (m_dialogStyle & wxCANCEL)
- msStyle = MB_OKCANCEL;
+ if ( wnd->GetMessageDialogStyle() & wxCENTER )
+ {
+ wnd->SetHWND(s->hwnd);
+ wnd->Center(); // center on parent
+ wnd->SetHWND(NULL);
+ }
+ //else: default behaviour, center on screen
+ }
+ }
+
+ return rc;
+}
+
+int wxMessageDialog::ShowModal()
+{
+ if ( !wxTheApp->GetTopWindow() )
+ {
+ // when the message box is shown from wxApp::OnInit() (i.e. before the
+ // message loop is entered), this must be done or the next message box
+ // will never be shown - just try putting 2 calls to wxMessageBox() in
+ // OnInit() to see it
+ while ( wxTheApp->Pending() )
+ wxTheApp->Dispatch();
+ }
+
+ // use the top level window as parent if none specified
+ if ( !m_parent )
+ m_parent = FindSuitableParent();
+ HWND hWnd = m_parent ? GetHwndOf(m_parent) : NULL;
+
+ // translate wx style in MSW
+ unsigned int msStyle = MB_OK;
+ const long wxStyle = GetMessageDialogStyle();
+ if (wxStyle & wxYES_NO)
+ {
+#if !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
+ if (wxStyle & wxCANCEL)
+ msStyle = MB_YESNOCANCEL;
+ else
+#endif // !(__SMARTPHONE__ && __WXWINCE__)
+ msStyle = MB_YESNO;
+
+ if (wxStyle & wxNO_DEFAULT)
+ msStyle |= MB_DEFBUTTON2;
+ }
+
+ if (wxStyle & wxOK)
+ {
+ if (wxStyle & wxCANCEL)
+ msStyle = MB_OKCANCEL;
+ else
+ msStyle = MB_OK;
+ }
+ if (wxStyle & wxICON_EXCLAMATION)
+ msStyle |= MB_ICONEXCLAMATION;
+ else if (wxStyle & wxICON_HAND)
+ msStyle |= MB_ICONHAND;
+ else if (wxStyle & wxICON_INFORMATION)
+ msStyle |= MB_ICONINFORMATION;
+ else if (wxStyle & wxICON_QUESTION)
+ msStyle |= MB_ICONQUESTION;
+
+ if ( wxStyle & wxSTAY_ON_TOP )
+ msStyle |= MB_TOPMOST;
+
+#ifndef __WXWINCE__
+ if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
+ msStyle |= MB_RTLREADING | MB_RIGHT;
+#endif
+
+ if (hWnd)
+ msStyle |= MB_APPLMODAL;
else
- msStyle = MB_OK;
- }
- if (m_dialogStyle & wxICON_EXCLAMATION)
- msStyle |= MB_ICONEXCLAMATION;
- else if (m_dialogStyle & wxICON_HAND)
- msStyle |= MB_ICONHAND;
- else if (m_dialogStyle & wxICON_INFORMATION)
- msStyle |= MB_ICONINFORMATION;
- else if (m_dialogStyle & wxICON_QUESTION)
- msStyle |= MB_ICONQUESTION;
-
- if (hWnd)
- msStyle |= MB_APPLMODAL;
- else
- msStyle |= MB_TASKMODAL;
-
- int msAns = MessageBox(hWnd, (LPCTSTR)(const wxChar *)m_message, (LPCTSTR)(const wxChar *)m_caption, msStyle);
- int ans = wxOK;
- switch (msAns)
- {
- case IDCANCEL:
- ans = wxID_CANCEL;
- break;
- case IDOK:
- ans = wxID_OK;
- break;
- case IDYES:
- ans = wxID_YES;
- break;
- case IDNO:
- ans = wxID_NO;
- break;
- }
- return ans;
+ msStyle |= MB_TASKMODAL;
+
+ // per MSDN documentation for MessageBox() we can prefix the message with 2
+ // right-to-left mark characters to tell the function to use RTL layout
+ // (unfortunately this only works in Unicode builds)
+ wxString message = GetFullMessage();
+#if wxUSE_UNICODE
+ if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
+ {
+ // NB: not all compilers support \u escapes
+ static const wchar_t wchRLM = 0x200f;
+ message.Prepend(wxString(wchRLM, 2));
+ }
+#endif // wxUSE_UNICODE
+
+ // install the hook if we need to position the dialog in a non-default way
+ if ( wxStyle & wxCENTER )
+ {
+ const DWORD tid = ::GetCurrentThreadId();
+ m_hook = ::SetWindowsHookEx(WH_CALLWNDPROCRET,
+ &wxMessageDialog::HookFunction, NULL, tid);
+ HookMap()[tid] = this;
+ }
+
+ // do show the dialog
+ int msAns = MessageBox(hWnd, message.wx_str(), m_caption.wx_str(), msStyle);
+ int ans;
+ switch (msAns)
+ {
+ default:
+ wxFAIL_MSG(_T("unexpected ::MessageBox() return code"));
+ // fall through
+
+ case IDCANCEL:
+ ans = wxID_CANCEL;
+ break;
+ case IDOK:
+ ans = wxID_OK;
+ break;
+ case IDYES:
+ ans = wxID_YES;
+ break;
+ case IDNO:
+ ans = wxID_NO;
+ break;
+ }
+ return ans;
}
+#endif // wxUSE_MSGDLG
projects / wxWidgets.git / blobdiff