src/msw/helpwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_HELP
  20
  21 #ifndef WX_PRECOMP
  22 #endif
  23
  24 #include "wx/filename.h"
  25 #include "wx/msw/helpwin.h"
  26
  27 #include <time.h>
  28
  29 #ifdef __WXMSW__
  30 #include "wx/msw/private.h"
  31 #endif
  32
  33 #include <string.h>
  34
  35 static HWND GetSuitableHWND(wxWinHelpController* controller)
  36 {
  37     if (controller->GetParentWindow())
  38         return (HWND) controller->GetParentWindow()->GetHWND();
  39     else if (wxTheApp->GetTopWindow())
  40         return (HWND) wxTheApp->GetTopWindow()->GetHWND();
  41     else
  42         return GetDesktopWindow();
  43 }
  44
  45 IMPLEMENT_DYNAMIC_CLASS(wxWinHelpController, wxHelpControllerBase)
  46
  47 bool wxWinHelpController::Initialize(const wxString& filename)
  48 {
  49     m_helpFile = filename;
  50     return true;
  51 }
  52
  53 bool wxWinHelpController::LoadFile(const wxString& file)
  54 {
  55     if (!file.empty())
  56         m_helpFile = file;
  57     return true;
  58 }
  59
  60 bool wxWinHelpController::DisplayContents(void)
  61 {
  62     if (m_helpFile.empty()) return false;
  63
  64     wxString str = GetValidFilename(m_helpFile);
  65
  66     return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_FINDER, 0L) != 0);
  67 }
  68
  69 bool wxWinHelpController::DisplaySection(int section)
  70 {
  71     // Use context number
  72     if (m_helpFile.empty()) return false;
  73
  74     wxString str = GetValidFilename(m_helpFile);
  75
  76     return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_CONTEXT, (DWORD)section) != 0);
  77 }
  78
  79 bool wxWinHelpController::DisplayContextPopup(int contextId)
  80 {
  81     if (m_helpFile.empty()) return false;
  82
  83     wxString str = GetValidFilename(m_helpFile);
  84
  85     return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_CONTEXTPOPUP, (DWORD) contextId) != 0);
  86 }
  87
  88 bool wxWinHelpController::DisplayBlock(long block)
  89 {
  90     DisplaySection(block);
  91     return true;
  92 }
  93
  94 bool wxWinHelpController::KeywordSearch(const wxString& k,
  95                                         wxHelpSearchMode WXUNUSED(mode))
  96 {
  97     if (m_helpFile.empty()) return false;
  98
  99     wxString str = GetValidFilename(m_helpFile);
 100
 101     return WinHelp(GetSuitableHWND(this), str.t_str(), HELP_PARTIALKEY,
 102                    (ULONG_PTR)wxMSW_CONV_LPCTSTR(k)) != 0;
 103 }
 104
 105 // Can't close the help window explicitly in WinHelp
 106 bool wxWinHelpController::Quit(void)
 107 {
 108     return WinHelp(GetSuitableHWND(this), 0, HELP_QUIT, 0) != 0;
 109 }
 110
 111 // Append extension if necessary.
 112 wxString wxWinHelpController::GetValidFilename(const wxString& file) const
 113 {
 114     wxString path, name, ext;
 115     wxFileName::SplitPath(file, & path, & name, & ext);
 116
 117     wxString fullName;
 118     if (path.empty())
 119         fullName = name + wxT(".hlp");
 120     else if (path.Last() == wxT('\\'))
 121         fullName = path + name + wxT(".hlp");
 122     else
 123         fullName = path + wxT("\\") + name + wxT(".hlp");
 124     return fullName;
 125 }
 126
 127 #endif // wxUSE_HELP