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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "msgdlg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/app.h"
  25     #include "wx/defs.h"
  26     #include "wx/utils.h"
  27     #include "wx/dialog.h"
  28     #include "wx/msgdlg.h"
  29 #endif
  30
  31 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  32
  33 wxMessageDialog::wxMessageDialog(wxWindow *parent,
  34                                  const wxString& message,
  35                                  const wxString& caption,
  36                                  long style,
  37                                  const wxPoint& WXUNUSED(pos))
  38 {
  39     m_caption = caption;
  40     m_message = message;
  41     m_parent = parent;
  42     SetMessageDialogStyle(style);
  43 }
  44
  45 int wxMessageDialog::ShowModal()
  46 {
  47     int AlertID=1000;
  48     int Result=0;
  49     int wxResult=wxID_OK;
  50     const long style = GetMessageDialogStyle();
  51
  52     // Handle to the currently running application database
  53     DmOpenRef    AppDB;
  54     SysGetModuleDatabase(SysGetRefNum(), NULL, &AppDB);
  55
  56     // Translate wx styles into Palm OS styles
  57     if (style & wxYES_NO)
  58     {
  59         if (style & wxCANCEL)
  60             AlertID=1300; // Yes No Cancel
  61         else
  62             AlertID=1200; // Yes No
  63     }
  64     if (style & wxOK)
  65     {
  66         if (style & wxCANCEL)
  67             AlertID=1100; // Ok Cancel
  68         else
  69             AlertID=1000; // Ok
  70     }
  71
  72     // Add the icon styles
  73     if (style & wxICON_EXCLAMATION)
  74         AlertID=AlertID+0; // Warning
  75     else if (style & wxICON_HAND)
  76         AlertID=AlertID+1; // Error
  77     else if (style & wxICON_INFORMATION)
  78         AlertID=AlertID+2; // Information
  79     else if (style & wxICON_QUESTION)
  80         AlertID=AlertID+3; // Confirmation
  81
  82     // The Palm OS Dialog API does not support custom titles in a dialog box.
  83     // So we have to set the title by manipulating the resource.
  84
  85     // Get the alert resource
  86     char *AlertPtr;
  87     MemHandle AlertHandle;
  88     AlertHandle=DmGetResource(AppDB,'Talt',AlertID);
  89
  90     AlertPtr=(char *)MemHandleLock(AlertHandle);
  91     AlertPtr+=8;
  92
  93     // Clear out any old title.  This must be done with a static array of chars
  94     // because using MemSet is not supported on resources and could result in
  95     // crashes or unpredictable behaviour.
  96     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
  97     MemMove(AlertPtr,&ClearTitle,25);
  98
  99     // Get the title length and make sure it is not too long
 100     int TitleLength=m_caption.length();
 101     if(TitleLength>25)
 102         TitleLength=25;
 103
 104     // Center the title in the window
 105     int BufferLength=(25-TitleLength)/2;
 106     AlertPtr+=BufferLength;
 107
 108     // Copy the title
 109     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 110
 111     // Release the resource
 112     MemHandleUnlock(AlertHandle);
 113     DmReleaseResource(AlertHandle);
 114
 115     // Display the dialog
 116     Result=FrmCustomAlert(AppDB,AlertID,m_message.c_str(),"","");
 117
 118     // Convert the Palm OS result to wxResult
 119     if(AlertID<1100)
 120     {
 121         // Ok
 122         wxResult=wxID_OK;
 123     }
 124     else if(AlertID<1200)
 125     {
 126         // Ok Cancel
 127         if(Result==0)
 128             wxResult=wxID_OK;
 129         else
 130             wxResult=wxID_CANCEL;
 131     }
 132     else if(AlertID<1300)
 133     {
 134         // Yes No
 135         if(Result==0)
 136             wxResult=wxID_YES;
 137         else
 138             wxResult=wxID_NO;
 139     }
 140     else
 141     {
 142         // Yes No Cancel
 143         if(Result==0)
 144             wxResult=wxID_YES;
 145         else if(Result==1)
 146             wxResult=wxID_NO;
 147         else
 148             wxResult=wxID_CANCEL;
 149     }
 150
 151     return wxResult;
 152 }
 153