src/WINNT/afsapplib/al_help.cpp

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 extern "C" {
  11 #include <afs/param.h>
  12 #include <afs/stds.h>
  13 }
  14
  15 #include <WINNT/afsapplib.h>
  16
  17
  18 /*
  19  * DEFINITIONS ______________________________________________________________
  20  *
  21  */
  22
  23 typedef struct
  24    {
  25    BOOL fInUse;
  26    int idd;
  27    DWORD *adwContext;
  28    int idhOverview;
  29    } DIALOGHELP, *LPDIALOGHELP;
  30
  31
  32 /*
  33  * VARIABLES ________________________________________________________________
  34  *
  35  */
  36
  37 static TCHAR g_szHelpfile[ MAX_PATH ] = TEXT("");
  38
  39 static DIALOGHELP *g_adh = NULL;
  40 static size_t g_cdh = 0;
  41
  42
  43 /*
  44  * ROUTINES _________________________________________________________________
  45  *
  46  */
  47
  48 void AfsAppLib_RegisterHelpFile (LPTSTR pszFilename)
  49 {
  50    if (pszFilename)
  51       lstrcpy (g_szHelpfile, pszFilename);
  52    else
  53       g_szHelpfile[0] = TEXT('\0');
  54 }
  55
  56
  57 void AfsAppLib_RegisterHelp (int idd, DWORD *adwContext, int idhOverview)
  58 {
  59    size_t ih;
  60    for (ih = 0; ih < g_cdh; ++ih)
  61       {
  62       if (!g_adh[ ih ].fInUse)
  63          continue;
  64       if (g_adh[ ih ].idd == idd)
  65          {
  66          g_adh[ ih ].adwContext = adwContext;
  67          g_adh[ ih ].idhOverview = idhOverview;
  68          return;
  69          }
  70       }
  71    for (ih = 0; ih < g_cdh; ++ih)
  72       {
  73       if (!g_adh[ ih ].fInUse)
  74          break;
  75       }
  76    if (ih == g_cdh)
  77       {
  78       (void)REALLOC (g_adh, g_cdh, 1+ih, 16);
  79       }
  80    if (ih < g_cdh)
  81       {
  82       g_adh[ ih ].fInUse = TRUE;
  83       g_adh[ ih ].idd = idd;
  84       g_adh[ ih ].adwContext = adwContext;
  85       g_adh[ ih ].idhOverview = idhOverview;
  86       }
  87 }
  88
  89
  90 BOOL AfsAppLib_HandleHelp (int idd, HWND hDlg, UINT msg, WPARAM wp, LPARAM lp)
  91 {
  92    BOOL rc = FALSE;
  93    size_t ih;
  94
  95    switch (msg)
  96       {
  97       case WM_COMMAND:
  98          switch (LOWORD(wp))
  99             {
 100             case IDHELP:
 101                for (ih = 0; ih < g_cdh; ++ih)
 102                   {
 103                   if (idd == g_adh[ ih ].idd)
 104                      break;
 105                   }
 106                if (ih < g_cdh)
 107                   {
 108                   if (g_szHelpfile)
 109                      WinHelp (hDlg, g_szHelpfile, HELP_CONTEXT, g_adh[ ih ].idhOverview);
 110                   rc = TRUE;
 111                   }
 112                break;
 113             }
 114          break;
 115
 116       case WM_HELP:
 117          LPHELPINFO lphi;
 118          for (ih = 0; ih < g_cdh; ++ih)
 119             {
 120             if (idd == g_adh[ ih ].idd)
 121                break;
 122             }
 123
 124          if ( (ih == g_cdh) ||
 125               ((lphi = (LPHELPINFO)lp) == NULL) ||
 126               (lphi->hItemHandle == NULL) ||
 127               (lphi->hItemHandle == hDlg) )
 128             {
 129             PostMessage (hDlg, WM_COMMAND, (WPARAM)MAKELONG(IDHELP,BN_CLICKED), (LPARAM)GetDlgItem (hDlg, IDHELP));
 130             }
 131          else
 132             {
 133             if (g_szHelpfile)
 134                WinHelp ((HWND)(lphi->hItemHandle), g_szHelpfile, HELP_WM_HELP, (DWORD)(DWORD_PTR)g_adh[ ih ].adwContext);
 135             }
 136
 137          rc = TRUE;
 138          break;
 139       }
 140
 141    return rc;
 142 }
 143