src/msw/helpwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpwin.cpp
   3 // Purpose:     Help system: WinHelp implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "helpwin.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/defs.h"
  25 #endif
  26
  27 #if wxUSE_HELP
  28
  29 #include "wx/filefn.h"
  30 #include "wx/msw/helpwin.h"
  31
  32 #include <time.h>
  33
  34 #ifdef __WXMSW__
  35 #include "wx/msw/private.h"
  36 #endif
  37
  38 #include <string.h>
  39
  40 static HWND GetSuitableHWND()
  41 {
  42     if (wxTheApp->GetTopWindow())
  43         return (HWND) wxTheApp->GetTopWindow()->GetHWND();
  44     else
  45         return GetDesktopWindow();
  46 }
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxWinHelpController, wxHelpControllerBase)
  49
  50 bool wxWinHelpController::Initialize(const wxString& filename)
  51 {
  52     m_helpFile = filename;
  53     return TRUE;
  54 }
  55
  56 bool wxWinHelpController::LoadFile(const wxString& file)
  57 {
  58     if (!file.IsEmpty())
  59         m_helpFile = file;
  60     return TRUE;
  61 }
  62
  63 bool wxWinHelpController::DisplayContents(void)
  64 {
  65     if (m_helpFile.IsEmpty()) return FALSE;
  66
  67     wxString str = GetValidFilename(m_helpFile);
  68
  69 #if defined(__WIN95__)
  70     return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_FINDER, 0L) != 0);
  71 #else
  72     return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_CONTENTS, 0L) != 0);
  73 #endif
  74 }
  75
  76 bool wxWinHelpController::DisplaySection(int section)
  77 {
  78     // Use context number
  79     if (m_helpFile.IsEmpty()) return FALSE;
  80
  81     wxString str = GetValidFilename(m_helpFile);
  82
  83     return (WinHelp((HWND) wxTheApp->GetTopWindow()->GetHWND(), (const wxChar*) str, HELP_CONTEXT, (DWORD)section) != 0);
  84 }
  85
  86 bool wxWinHelpController::DisplayContextPopup(int contextId)
  87 {
  88     if (m_helpFile.IsEmpty()) return FALSE;
  89
  90     wxString str = GetValidFilename(m_helpFile);
  91
  92     return (WinHelp((HWND) wxTheApp->GetTopWindow()->GetHWND(), (const wxChar*) str, HELP_CONTEXTPOPUP, (DWORD) contextId) != 0);
  93 }
  94
  95 bool wxWinHelpController::DisplayBlock(long block)
  96 {
  97     DisplaySection(block);
  98     return TRUE;
  99 }
 100
 101 bool wxWinHelpController::KeywordSearch(const wxString& k,
 102                                         wxHelpSearchMode WXUNUSED(mode))
 103 {
 104     if (m_helpFile.IsEmpty()) return FALSE;
 105
 106     wxString str = GetValidFilename(m_helpFile);
 107
 108     return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_PARTIALKEY, (DWORD)(const wxChar*) k) != 0);
 109 }
 110
 111 // Can't close the help window explicitly in WinHelp
 112 bool wxWinHelpController::Quit(void)
 113 {
 114     return (WinHelp(GetSuitableHWND(), 0, HELP_QUIT, 0L) != 0);
 115 }
 116
 117 // Append extension if necessary.
 118 wxString wxWinHelpController::GetValidFilename(const wxString& file) const
 119 {
 120     wxString path, name, ext;
 121     wxSplitPath(file, & path, & name, & ext);
 122
 123     wxString fullName;
 124     if (path.IsEmpty())
 125         fullName = name + wxT(".hlp");
 126     else if (path.Last() == wxT('\\'))
 127         fullName = path + name + wxT(".hlp");
 128     else
 129         fullName = path + wxT("\\") + name + wxT(".hlp");
 130     return fullName;
 131 }
 132
 133 #endif // wxUSE_HELP