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