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 #ifdef __WXDEBUG__
  40     // check for common programming errors
  41     if ( (style & wxID_OK) == wxID_OK )
  42     {
  43         // programmer probably confused wxID_OK with wxOK. Correct one is wxOK.
  44         wxFAIL_MSG( _T("wxMessageBox: Did you mean wxOK (and not wxID_OK)?") );
  45     }
  46 #endif // __WXDEBUG__
  47
  48     m_caption = caption;
  49     m_message = message;
  50     m_dialogStyle = style;
  51     m_parent = parent;
  52 }
  53
  54 int wxMessageDialog::ShowModal()
  55 {
  56     int AlertID=1000;
  57     int Result=0;
  58     int wxResult=wxID_OK;
  59
  60     // Handle to the currently running application database
  61     DmOpenRef    AppDB;
  62     SysGetModuleDatabase(SysGetRefNum(), NULL, &AppDB);
  63
  64     // Translate wx styles into Palm OS styles
  65     if (m_dialogStyle & wxYES_NO)
  66     {
  67         if (m_dialogStyle & wxCANCEL)
  68             AlertID=1300; // Yes No Cancel
  69         else
  70             AlertID=1200; // Yes No
  71     }
  72     if (m_dialogStyle & wxOK)
  73     {
  74         if (m_dialogStyle & wxCANCEL)
  75             AlertID=1100; // Ok Cancel
  76         else
  77             AlertID=1000; // Ok
  78     }
  79
  80     // Add the icon styles
  81     if (m_dialogStyle & wxICON_EXCLAMATION)
  82         AlertID=AlertID+0; // Warning
  83     else if (m_dialogStyle & wxICON_HAND)
  84         AlertID=AlertID+1; // Error
  85     else if (m_dialogStyle & wxICON_INFORMATION)
  86         AlertID=AlertID+2; // Information
  87     else if (m_dialogStyle & wxICON_QUESTION)
  88         AlertID=AlertID+3; // Confirmation
  89
  90     // The Palm OS Dialog API does not support custom titles in a dialog box.
  91     // So we have to set the title by manipulating the resource.
  92
  93     // Get the alert resource
  94     char *AlertPtr;
  95     MemHandle AlertHandle;
  96     AlertHandle=DmGetResource(AppDB,'Talt',AlertID);
  97
  98     AlertPtr=(char *)MemHandleLock(AlertHandle);
  99     AlertPtr+=8;
 100
 101     // Clear out any old title.  This must be done with a static array of chars
 102     // because using MemSet is not supported on resources and could result in
 103     // crashes or unpredictable behaviour.
 104     char ClearTitle[25]={' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
 105     MemMove(AlertPtr,&ClearTitle,25);
 106
 107     // Get the title length and make sure it is not too long
 108     int TitleLength=m_caption.length();
 109     if(TitleLength>25)
 110         TitleLength=25;
 111
 112     // Center the title in the window
 113     int BufferLength=(25-TitleLength)/2;
 114     AlertPtr+=BufferLength;
 115
 116     // Copy the title
 117     MemMove(AlertPtr,m_caption.c_str(),TitleLength);
 118
 119     // Release the resource
 120     MemHandleUnlock(AlertHandle);
 121     DmReleaseResource(AlertHandle);
 122
 123     // Display the dialog
 124     Result=FrmCustomAlert(AppDB,AlertID,m_message.c_str(),"","");
 125
 126     // Convert the Palm OS result to wxResult
 127     if(AlertID<1100)
 128     {
 129         // Ok
 130         wxResult=wxID_OK;
 131     }
 132     else if(AlertID<1200)
 133     {
 134         // Ok Cancel
 135         if(Result==0)
 136             wxResult=wxID_OK;
 137         else
 138             wxResult=wxID_CANCEL;
 139     }
 140     else if(AlertID<1300)
 141     {
 142         // Yes No
 143         if(Result==0)
 144             wxResult=wxID_YES;
 145         else
 146             wxResult=wxID_NO;
 147     }
 148     else
 149     {
 150         // Yes No Cancel
 151         if(Result==0)
 152             wxResult=wxID_YES;
 153         else if(Result==1)
 154             wxResult=wxID_NO;
 155         else
 156             wxResult=wxID_CANCEL;
 157     }
 158
 159     return wxResult;
 160 }
 161