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 #if wxUSE_MSGDLG
  20
  21 #include "wx/msgdlg.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/app.h"
  25     #include "wx/utils.h"
  26     #include "wx/dialog.h"
  27 #endif
  28
  29 #include "wx/msw/private.h"
  30
  31 // For MB_TASKMODAL
  32 #ifdef __WXWINCE__
  33 #include "wx/msw/wince/missing.h"
  34 #endif
  35
  36 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  37
  38 int wxMessageDialog::ShowModal()
  39 {
  40     if ( !wxTheApp->GetTopWindow() )
  41     {
  42         // when the message box is shown from wxApp::OnInit() (i.e. before the
  43         // message loop is entered), this must be done or the next message box
  44         // will never be shown - just try putting 2 calls to wxMessageBox() in
  45         // OnInit() to see it
  46         while ( wxTheApp->Pending() )
  47             wxTheApp->Dispatch();
  48     }
  49
  50     // use the top level window as parent if none specified
  51     if ( !m_parent )
  52         m_parent = FindSuitableParent();
  53     HWND hWnd = m_parent ? GetHwndOf(m_parent) : NULL;
  54
  55     // translate wx style in MSW
  56     unsigned int msStyle = MB_OK;
  57     const long wxStyle = GetMessageDialogStyle();
  58     if (wxStyle & wxYES_NO)
  59     {
  60 #if !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  61         if (wxStyle & wxCANCEL)
  62             msStyle = MB_YESNOCANCEL;
  63         else
  64 #endif // !(__SMARTPHONE__ && __WXWINCE__)
  65             msStyle = MB_YESNO;
  66
  67         if (wxStyle & wxNO_DEFAULT)
  68             msStyle |= MB_DEFBUTTON2;
  69     }
  70
  71     if (wxStyle & wxOK)
  72     {
  73         if (wxStyle & wxCANCEL)
  74             msStyle = MB_OKCANCEL;
  75         else
  76             msStyle = MB_OK;
  77     }
  78     if (wxStyle & wxICON_EXCLAMATION)
  79         msStyle |= MB_ICONEXCLAMATION;
  80     else if (wxStyle & wxICON_HAND)
  81         msStyle |= MB_ICONHAND;
  82     else if (wxStyle & wxICON_INFORMATION)
  83         msStyle |= MB_ICONINFORMATION;
  84     else if (wxStyle & wxICON_QUESTION)
  85         msStyle |= MB_ICONQUESTION;
  86
  87     if ( wxStyle & wxSTAY_ON_TOP )
  88         msStyle |= MB_TOPMOST;
  89
  90 #ifndef __WXWINCE__
  91     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
  92         msStyle |= MB_RTLREADING | MB_RIGHT;
  93 #endif
  94
  95     if (hWnd)
  96         msStyle |= MB_APPLMODAL;
  97     else
  98         msStyle |= MB_TASKMODAL;
  99
 100     // per MSDN documentation for MessageBox() we can prefix the message with 2
 101     // right-to-left mark characters to tell the function to use RTL layout
 102     // (unfortunately this only works in Unicode builds)
 103     wxString message = GetFullMessage();
 104 #if wxUSE_UNICODE
 105     if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
 106     {
 107         // NB: not all compilers support \u escapes
 108         static const wchar_t wchRLM = 0x200f;
 109         message.Prepend(wxString(wchRLM, 2));
 110     }
 111 #endif // wxUSE_UNICODE
 112
 113     // do show the dialog
 114     int msAns = MessageBox(hWnd, message.wx_str(), m_caption.wx_str(), msStyle);
 115     int ans;
 116     switch (msAns)
 117     {
 118         default:
 119             wxFAIL_MSG(_T("unexpected ::MessageBox() return code"));
 120             // fall through
 121
 122         case IDCANCEL:
 123             ans = wxID_CANCEL;
 124             break;
 125         case IDOK:
 126             ans = wxID_OK;
 127             break;
 128         case IDYES:
 129             ans = wxID_YES;
 130             break;
 131         case IDNO:
 132             ans = wxID_NO;
 133             break;
 134     }
 135     return ans;
 136 }
 137
 138 #endif // wxUSE_MSGDLG