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