src/palmos/msgdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/msgdlg.cpp
   3 // Purpose:     wxMessageDialog
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10/13/04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   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 #ifndef WX_PRECOMP
  20     #include "wx/app.h"
  21     #include "wx/defs.h"
  22     #include "wx/utils.h"
  23     #include "wx/dialog.h"
  24     #include "wx/msgdlg.h"
  25 #endif
  26
  27 #include <Loader.h>
  28 #include <Form.h>
  29
  30 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  31
  32 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  33                                  const wxString& message,
  34                                  const wxString& caption,
  35                                  long style,
  36                                  const wxPoint& WXUNUSED(pos))
  37 {
  38     m_caption = caption;
  39     m_message = message;
  40     m_parent = parent;
  41     SetMessageDialogStyle(style);
  42 }
  43
  44 int wxMessageDialog::ShowModal()
  45 {
  46     int AlertID=1000;
  47     int Result=0;
  48     int wxResult=wxID_OK;
  49     const long style = GetMessageDialogStyle();
  50
  51     // Handle to the currently running application database
  52     DmOpenRef    AppDB;
  53     SysGetModuleDatabase(SysGetRefNum(), NULL, &AppDB);
  54
  55     // Translate wx styles into Palm OS styles
  56     if (style & wxYES_NO)
  57     {
  58         if (style & wxCANCEL)
  59             AlertID=1300; // Yes No Cancel
  60         else
  61             AlertID=1200; // Yes No
  62     }
  63     if (style & wxOK)
  64     {
  65         if (style & wxCANCEL)
  66             AlertID=1100; // Ok Cancel
  67         else
  68             AlertID=1000; // Ok
  69     }
  70
  71     // Add the icon styles
  72     if (style & wxICON_EXCLAMATION)
  73         AlertID=AlertID+0; // Warning
  74     else if (style & wxICON_HAND)
  75         AlertID=AlertID+1; // Error
  76     else if (style & wxICON_INFORMATION)
  77         AlertID=AlertID+2; // Information
  78     else if (style & wxICON_QUESTION)
  79         AlertID=AlertID+3; // Confirmation
  80
  81     // The Palm OS Dialog API does not support custom titles in a dialog box.
  82     // So we have to set the title by manipulating the resource.
  83
  84     // Get the alert resource
  85     char *AlertPtr;
  86     MemHandle AlertHandle;
  87     AlertHandle=DmGetResource(AppDB,'Talt',AlertID);
  88
  89     AlertPtr=(char *)MemHandleLock(AlertHandle);
  90     AlertPtr+=8;
  91
  92     // Clear out any old title.  This must be done with a static array of chars
  93     // because using MemSet is not supported on resources and could result in
  94     // crashes or unpredictable behaviour.
  95     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
  96     MemMove(AlertPtr,&ClearTitle,25);
  97
  98     // Get the title length and make sure it is not too long
  99     int TitleLength=m_caption.length();
 100     if(TitleLength>25)
 101         TitleLength=25;
 102
 103     // Center the title in the window
 104     int BufferLength=(25-TitleLength)/2;
 105     AlertPtr+=BufferLength;
 106
 107     // Copy the title
 108     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 109
 110     // Release the resource
 111     MemHandleUnlock(AlertHandle);
 112     DmReleaseResource(AlertHandle);
 113
 114     // Display the dialog
 115     Result=FrmCustomAlert(AppDB,AlertID,m_message.c_str(),"","");
 116
 117     // Convert the Palm OS result to wxResult
 118     if(AlertID<1100)
 119     {
 120         // Ok
 121         wxResult=wxID_OK;
 122     }
 123     else if(AlertID<1200)
 124     {
 125         // Ok Cancel
 126         if(Result==0)
 127             wxResult=wxID_OK;
 128         else
 129             wxResult=wxID_CANCEL;
 130     }
 131     else if(AlertID<1300)
 132     {
 133         // Yes No
 134         if(Result==0)
 135             wxResult=wxID_YES;
 136         else
 137             wxResult=wxID_NO;
 138     }
 139     else
 140     {
 141         // Yes No Cancel
 142         if(Result==0)
 143             wxResult=wxID_YES;
 144         else if(Result==1)
 145             wxResult=wxID_NO;
 146         else
 147             wxResult=wxID_CANCEL;
 148     }
 149
 150     return wxResult;
 151 }
 152