windows/winhelp.c

   1 /*
   2  * Windows Help
   3  */
   4
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9 #include "debugtools.h"
  10 #include "windef.h"
  11 #include "wingdi.h"
  12 #include "wine/winuser16.h"
  13 #include "wine/winbase16.h"
  14 #include "heap.h"
  15 #include "ldt.h"
  16 #include "syslevel.h"
  17
  18 DEFAULT_DEBUG_CHANNEL(win);
  19
  20
  21 /**********************************************************************
  22  *             WinHelp16   (USER.171)
  23  */
  24 BOOL16 WINAPI WinHelp16( HWND16 hWnd, LPCSTR lpHelpFile, UINT16 wCommand,
  25                          DWORD dwData )
  26 {
  27   BOOL ret;
  28   /* We might call WinExec() */
  29   SYSLEVEL_ReleaseWin16Lock();
  30
  31   if (!(ret = WinHelpA( hWnd, lpHelpFile, wCommand, (DWORD)PTR_SEG_TO_LIN(dwData) )))
  32   {
  33       /* try to start the 16-bit winhelp */
  34       if (WinExec( "winhelp.exe -x", SW_SHOWNORMAL ) >= 32)
  35       {
  36           Yield16();
  37           ret = WinHelpA( hWnd, lpHelpFile, wCommand, (DWORD)PTR_SEG_TO_LIN(dwData) );
  38       }
  39   }
  40
  41   SYSLEVEL_RestoreWin16Lock();
  42   return ret;
  43 }
  44
  45
  46 /**********************************************************************
  47  *             WinHelpA   (USER32.579)
  48  */
  49 BOOL WINAPI WinHelpA( HWND hWnd, LPCSTR lpHelpFile, UINT wCommand,
  50                           DWORD dwData )
  51 {
  52         static WORD WM_WINHELP = 0;
  53         HWND hDest;
  54         LPWINHELP lpwh;
  55         HGLOBAL16 hwh;
  56         int size,dsize,nlen;
  57
  58
  59         if(!WM_WINHELP)
  60           {
  61             WM_WINHELP=RegisterWindowMessageA("WM_WINHELP");
  62             if(!WM_WINHELP)
  63               return FALSE;
  64           }
  65
  66         hDest = FindWindowA( "MS_WINHELP", NULL );
  67         if(!hDest) {
  68           if(wCommand == HELP_QUIT) return TRUE;
  69           if (WinExec ( "winhlp32.exe -x", SW_SHOWNORMAL ) < 32) return FALSE;
  70           if ( ! ( hDest = FindWindowA ( "MS_WINHELP", NULL ) )) return FALSE;
  71         }
  72
  73
  74         switch(wCommand)
  75         {
  76                 case HELP_CONTEXT:
  77                 case HELP_SETCONTENTS:
  78                 case HELP_CONTENTS:
  79                 case HELP_CONTEXTPOPUP:
  80                 case HELP_FORCEFILE:
  81                 case HELP_HELPONHELP:
  82                 case HELP_FINDER:
  83                 case HELP_QUIT:
  84                         dsize=0;
  85                         break;
  86                 case HELP_KEY:
  87                 case HELP_PARTIALKEY:
  88                 case HELP_COMMAND:
  89                         dsize = dwData ? strlen( (LPSTR)dwData )+1: 0;
  90                         break;
  91                 case HELP_MULTIKEY:
  92                         dsize = ((LPMULTIKEYHELP)dwData)->mkSize;
  93                         break;
  94                 case HELP_SETWINPOS:
  95                         dsize = ((LPHELPWININFO)dwData)->wStructSize;
  96                         break;
  97                 default:
  98                         WARN("Unknown help command %d\n",wCommand);
  99                         return FALSE;
 100         }
 101         if(lpHelpFile)
 102                 nlen = strlen(lpHelpFile)+1;
 103         else
 104                 nlen = 0;
 105         size = sizeof(WINHELP) + nlen + dsize;
 106         hwh = GlobalAlloc16(0,size);
 107         lpwh = GlobalLock16(hwh);
 108         lpwh->size = size;
 109         lpwh->command = wCommand;
 110         lpwh->data = dwData;
 111         if(nlen) {
 112                 strcpy(((char*)lpwh) + sizeof(WINHELP),lpHelpFile);
 113                 lpwh->ofsFilename = sizeof(WINHELP);
 114         } else
 115                 lpwh->ofsFilename = 0;
 116         if(dsize) {
 117                 memcpy(((char*)lpwh)+sizeof(WINHELP)+nlen,(LPSTR)dwData,dsize);
 118                 lpwh->ofsData = sizeof(WINHELP)+nlen;
 119         } else
 120                 lpwh->ofsData = 0;
 121         GlobalUnlock16(hwh);
 122         return SendMessage16(hDest,WM_WINHELP,hWnd,hwh);
 123 }
 124
 125
 126 /**********************************************************************
 127  *             WinHelpW   (USER32.580)
 128  */
 129 BOOL WINAPI WinHelpW( HWND hWnd, LPCWSTR helpFile, UINT command,
 130                           DWORD dwData )
 131 {
 132     LPSTR file = HEAP_strdupWtoA( GetProcessHeap(), 0, helpFile );
 133     BOOL ret = WinHelpA( hWnd, file, command, dwData );
 134     HeapFree( GetProcessHeap(), 0, file );
 135     return ret;
 136 }