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/utils.h"
  22     #include "wx/dialog.h"
  23     #include "wx/msgdlg.h"
  24 #endif
  25
  26 #ifdef __WXPALMOS6__
  27 #include <Loader.h>
  28 #else // __WXPALMOS5__
  29 #include <UIResources.h> // alertRscType
  30 #endif
  31
  32 #include <Form.h>
  33
  34 IMPLEMENT_CLASS(wxMessageDialog, wxDialog)
  35
  36 int wxMessageDialog::ShowModal()
  37 {
  38     int AlertID=1000;
  39     int Result=0;
  40     int wxResult=wxID_OK;
  41     const long style = GetMessageDialogStyle();
  42
  43 #ifdef __WXPALMOS6__
  44     // Handle to the currently running application database
  45     DmOpenRef    AppDB;
  46     SysGetModuleDatabase(SysGetRefNum(), NULL, &AppDB);
  47 #endif // __WXPALMOS6__
  48
  49     // Translate wx styles into Palm OS styles
  50     if (style & wxYES_NO)
  51     {
  52         if (style & wxCANCEL)
  53             AlertID=1300; // Yes No Cancel
  54         else
  55             AlertID=1200; // Yes No
  56     }
  57     if (style & wxOK)
  58     {
  59         if (style & wxCANCEL)
  60             AlertID=1100; // Ok Cancel
  61         else
  62             AlertID=1000; // Ok
  63     }
  64
  65     // Add the icon styles
  66     switch ( GetEffectiveIcon() )
  67     {
  68         case wxICON_ERROR:
  69             AlertID = AlertID + 1;
  70             break;
  71
  72         case wxICON_WARNING:
  73             AlertID = AlertID + 0;
  74             break;
  75
  76         case wxICON_QUESTION:
  77             AlertID = AlertID + 3;
  78             break;
  79
  80         case wxICON_NONE:
  81         case wxICON_INFORMATION:
  82             AlertID = AlertID + 2;
  83             break;
  84     }
  85
  86     // The Palm OS Dialog API does not support custom titles in a dialog box.
  87     // So we have to set the title by manipulating the resource.
  88
  89     // Get the alert resource
  90     char *AlertPtr;
  91     MemHandle AlertHandle;
  92     AlertHandle = POS_DmGetResource (AppDB, alertRscType, AlertID);
  93
  94     AlertPtr=(char *)MemHandleLock(AlertHandle);
  95     AlertPtr+=8;
  96
  97     // Clear out any old title.  This must be done with a static array of chars
  98     // because using MemSet is not supported on resources and could result in
  99     // crashes or unpredictable behaviour.
 100     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
 101     MemMove(AlertPtr,&ClearTitle,25);
 102
 103     // Get the title length and make sure it is not too long
 104     int TitleLength=m_caption.length();
 105     if(TitleLength>25)
 106         TitleLength=25;
 107
 108     // Center the title in the window
 109     int BufferLength=(25-TitleLength)/2;
 110     AlertPtr+=BufferLength;
 111
 112     // Copy the title
 113     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 114
 115     // Release the resource
 116     MemHandleUnlock(AlertHandle);
 117     DmReleaseResource(AlertHandle);
 118
 119     // Display the dialog
 120     Result = POS_FrmCustomAlert (AppDB, AlertID, m_message.c_str(), "", "");
 121
 122     // Convert the Palm OS result to wxResult
 123     if(AlertID<1100)
 124     {
 125         // Ok
 126         wxResult=wxID_OK;
 127     }
 128     else if(AlertID<1200)
 129     {
 130         // Ok Cancel
 131         if(Result==0)
 132             wxResult=wxID_OK;
 133         else
 134             wxResult=wxID_CANCEL;
 135     }
 136     else if(AlertID<1300)
 137     {
 138         // Yes No
 139         if(Result==0)
 140             wxResult=wxID_YES;
 141         else
 142             wxResult=wxID_NO;
 143     }
 144     else
 145     {
 146         // Yes No Cancel
 147         if(Result==0)
 148             wxResult=wxID_YES;
 149         else if(Result==1)
 150             wxResult=wxID_NO;
 151         else
 152             wxResult=wxID_CANCEL;
 153     }
 154
 155     return wxResult;
 156 }