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 "debug.h"
  10 #include "wine/winuser16.h"
  11 #include "wine/winbase16.h"
  12 #include "heap.h"
  13 #include "ldt.h"
  14
  15 DEFAULT_DEBUG_CHANNEL(win)
  16
  17
  18 /**********************************************************************
  19  *             WinHelp16   (USER.171)
  20  */
  21 BOOL16 WINAPI WinHelp16( HWND16 hWnd, LPCSTR lpHelpFile, UINT16 wCommand,
  22                          DWORD dwData )
  23 {
  24     return WinHelpA( hWnd, lpHelpFile, wCommand,
  25                        (DWORD)PTR_SEG_TO_LIN(dwData) );
  26 }
  27
  28
  29 /**********************************************************************
  30  *             WinHelp32A   (USER32.579)
  31  */
  32 BOOL WINAPI WinHelpA( HWND hWnd, LPCSTR lpHelpFile, UINT wCommand,
  33                           DWORD dwData )
  34 {
  35         static WORD WM_WINHELP = 0;
  36         HWND hDest;
  37         LPWINHELP lpwh;
  38         HGLOBAL16 hwh;
  39         int size,dsize,nlen;
  40         if (wCommand != HELP_QUIT)  /* FIXME */
  41         {
  42             if (WinExec("winhelp.exe -x",SW_SHOWNORMAL) <= 32)
  43                 return FALSE;
  44
  45             /* NOTE: Probably, this should be directed yield,
  46                      to let winhelp open the window in all cases. */
  47             Yield16();
  48         }
  49
  50         if(!WM_WINHELP)
  51         {
  52                 WM_WINHELP=RegisterWindowMessageA("WM_WINHELP");
  53                 if(!WM_WINHELP)
  54                         return FALSE;
  55         }
  56
  57         hDest = FindWindowA( "MS_WINHELP", NULL );
  58         if(!hDest)
  59         {
  60                 if(wCommand == HELP_QUIT)
  61                         return TRUE;
  62                 else
  63                         return FALSE;
  64         }
  65         switch(wCommand)
  66         {
  67                 case HELP_CONTEXT:
  68                 case HELP_SETCONTENTS:
  69                 case HELP_CONTENTS:
  70                 case HELP_CONTEXTPOPUP:
  71                 case HELP_FORCEFILE:
  72                 case HELP_HELPONHELP:
  73                 case HELP_FINDER:
  74                 case HELP_QUIT:
  75                         dsize=0;
  76                         break;
  77                 case HELP_KEY:
  78                 case HELP_PARTIALKEY:
  79                 case HELP_COMMAND:
  80                         dsize = strlen( (LPSTR)dwData )+1;
  81                         break;
  82                 case HELP_MULTIKEY:
  83                         dsize = ((LPMULTIKEYHELP)dwData)->mkSize;
  84                         break;
  85                 case HELP_SETWINPOS:
  86                         dsize = ((LPHELPWININFO)dwData)->wStructSize;
  87                         break;
  88                 default:
  89                         WARN( win,"Unknown help command %d\n",wCommand);
  90                         return FALSE;
  91         }
  92         if(lpHelpFile)
  93                 nlen = strlen(lpHelpFile)+1;
  94         else
  95                 nlen = 0;
  96         size = sizeof(WINHELP) + nlen + dsize;
  97         hwh = GlobalAlloc16(0,size);
  98         lpwh = GlobalLock16(hwh);
  99         lpwh->size = size;
 100         lpwh->command = wCommand;
 101         lpwh->data = dwData;
 102         if(nlen) {
 103                 strcpy(((char*)lpwh) + sizeof(WINHELP),lpHelpFile);
 104                 lpwh->ofsFilename = sizeof(WINHELP);
 105         } else
 106                 lpwh->ofsFilename = 0;
 107         if(dsize) {
 108                 memcpy(((char*)lpwh)+sizeof(WINHELP)+nlen,(LPSTR)dwData,dsize);
 109                 lpwh->ofsData = sizeof(WINHELP)+nlen;
 110         } else
 111                 lpwh->ofsData = 0;
 112         GlobalUnlock16(hwh);
 113         return SendMessage16(hDest,WM_WINHELP,hWnd,hwh);
 114 }
 115
 116
 117 /**********************************************************************
 118  *             WinHelp32W   (USER32.580)
 119  */
 120 BOOL WINAPI WinHelpW( HWND hWnd, LPCWSTR helpFile, UINT command,
 121                           DWORD dwData )
 122 {
 123     LPSTR file = HEAP_strdupWtoA( GetProcessHeap(), 0, helpFile );
 124     BOOL ret = WinHelpA( hWnd, file, command, dwData );
 125     HeapFree( GetProcessHeap(), 0, file );
 126     return ret;
 127 }