src/msw/msgdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/msgdlg.cpp
   3 // Purpose:     wxMessageDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/msgdlg.h"
  20
  21 #ifndef WX_PRECOMP
  22     #include "wx/app.h"
  23     #include "wx/utils.h"
  24     #include "wx/dialog.h"
  25 #endif
  26
  27 #include "wx/msw/private.h"
  28
  29 // For MB_TASKMODAL
  30 #ifdef __WXWINCE__
  31 #include "wx/msw/wince/missing.h"
  32 #endif
  33
  34 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  35
  36 int wxMessageDialog::ShowModal()
  37 {
  38     if ( !wxTheApp->GetTopWindow() )
  39     {
  40         // when the message box is shown from wxApp::OnInit() (i.e. before the
  41         // message loop is entered), this must be done or the next message box
  42         // will never be shown - just try putting 2 calls to wxMessageBox() in
  43         // OnInit() to see it
  44         while ( wxTheApp->Pending() )
  45             wxTheApp->Dispatch();
  46     }
  47
  48     // use the top level window as parent if none specified
  49     if ( !m_parent )
  50         m_parent = FindSuitableParent();
  51     HWND hWnd = m_parent ? GetHwndOf(m_parent) : NULL;
  52
  53     // translate wx style in MSW
  54     unsigned int msStyle = MB_OK;
  55     const long wxStyle = GetMessageDialogStyle();
  56     if (wxStyle & wxYES_NO)
  57     {
  58 #if !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  59         if (wxStyle & wxCANCEL)
  60             msStyle = MB_YESNOCANCEL;
  61         else
  62 #endif // !(__SMARTPHONE__ && __WXWINCE__)
  63             msStyle = MB_YESNO;
  64
  65         if (wxStyle & wxNO_DEFAULT)
  66             msStyle |= MB_DEFBUTTON2;
  67     }
  68
  69     if (wxStyle & wxOK)
  70     {
  71         if (wxStyle & wxCANCEL)
  72             msStyle = MB_OKCANCEL;
  73         else
  74             msStyle = MB_OK;
  75     }
  76     if (wxStyle & wxICON_EXCLAMATION)
  77         msStyle |= MB_ICONEXCLAMATION;
  78     else if (wxStyle & wxICON_HAND)
  79         msStyle |= MB_ICONHAND;
  80     else if (wxStyle & wxICON_INFORMATION)
  81         msStyle |= MB_ICONINFORMATION;
  82     else if (wxStyle & wxICON_QUESTION)
  83         msStyle |= MB_ICONQUESTION;
  84
  85     if ( wxStyle & wxSTAY_ON_TOP )
  86         msStyle |= MB_TOPMOST;
  87
  88 #ifndef __WXWINCE__
  89     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
  90         msStyle |= MB_RTLREADING | MB_RIGHT;
  91 #endif
  92
  93     if (hWnd)
  94         msStyle |= MB_APPLMODAL;
  95     else
  96         msStyle |= MB_TASKMODAL;
  97
  98     // per MSDN documentation for MessageBox() we can prefix the message with 2
  99     // right-to-left mark characters to tell the function to use RTL layout
 100     // (unfortunately this only works in Unicode builds)
 101     wxString message = GetFullMessage();
 102 #if wxUSE_UNICODE
 103     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 104     {
 105         // NB: not all compilers support \u escapes
 106         static const wchar_t wchRLM = 0x200f;
 107         message.Prepend(wxString(wchRLM, 2));
 108     }
 109 #endif // wxUSE_UNICODE
 110
 111     // do show the dialog
 112     int msAns = MessageBox(hWnd, message, m_caption, msStyle);
 113     int ans;
 114     switch (msAns)
 115     {
 116         default:
 117             wxFAIL_MSG(_T("unexpected ::MessageBox() return code"));
 118             // fall through
 119
 120         case IDCANCEL:
 121             ans = wxID_CANCEL;
 122             break;
 123         case IDOK:
 124             ans = wxID_OK;
 125             break;
 126         case IDYES:
 127             ans = wxID_YES;
 128             break;
 129         case IDNO:
 130             ans = wxID_NO;
 131             break;
 132     }
 133     return ans;
 134 }