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