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     if (style & wxICON_EXCLAMATION)
  67         AlertID=AlertID+0; // Warning
  68     else if (style & wxICON_HAND)
  69         AlertID=AlertID+1; // Error
  70     else if (style & wxICON_INFORMATION)
  71         AlertID=AlertID+2; // Information
  72     else if (style & wxICON_QUESTION)
  73         AlertID=AlertID+3; // Confirmation
  74
  75     // The Palm OS Dialog API does not support custom titles in a dialog box.
  76     // So we have to set the title by manipulating the resource.
  77
  78     // Get the alert resource
  79     char *AlertPtr;
  80     MemHandle AlertHandle;
  81     AlertHandle = POS_DmGetResource (AppDB, alertRscType, AlertID);
  82
  83     AlertPtr=(char *)MemHandleLock(AlertHandle);
  84     AlertPtr+=8;
  85
  86     // Clear out any old title.  This must be done with a static array of chars
  87     // because using MemSet is not supported on resources and could result in
  88     // crashes or unpredictable behaviour.
  89     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
  90     MemMove(AlertPtr,&ClearTitle,25);
  91
  92     // Get the title length and make sure it is not too long
  93     int TitleLength=m_caption.length();
  94     if(TitleLength>25)
  95         TitleLength=25;
  96
  97     // Center the title in the window
  98     int BufferLength=(25-TitleLength)/2;
  99     AlertPtr+=BufferLength;
 100
 101     // Copy the title
 102     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 103
 104     // Release the resource
 105     MemHandleUnlock(AlertHandle);
 106     DmReleaseResource(AlertHandle);
 107
 108     // Display the dialog
 109     Result = POS_FrmCustomAlert (AppDB, AlertID, m_message.c_str(), "", "");
 110
 111     // Convert the Palm OS result to wxResult
 112     if(AlertID<1100)
 113     {
 114         // Ok
 115         wxResult=wxID_OK;
 116     }
 117     else if(AlertID<1200)
 118     {
 119         // Ok Cancel
 120         if(Result==0)
 121             wxResult=wxID_OK;
 122         else
 123             wxResult=wxID_CANCEL;
 124     }
 125     else if(AlertID<1300)
 126     {
 127         // Yes No
 128         if(Result==0)
 129             wxResult=wxID_YES;
 130         else
 131             wxResult=wxID_NO;
 132     }
 133     else
 134     {
 135         // Yes No Cancel
 136         if(Result==0)
 137             wxResult=wxID_YES;
 138         else if(Result==1)
 139             wxResult=wxID_NO;
 140         else
 141             wxResult=wxID_CANCEL;
 142     }
 143
 144     return wxResult;
 145 }