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 "windows.h"
  10 #include "heap.h"
  11 #include "ldt.h"
  12
  13
  14 /**********************************************************************
  15  *             WinHelp16   (USER.171)
  16  */
  17 BOOL16 WINAPI WinHelp16( HWND16 hWnd, LPCSTR lpHelpFile, UINT16 wCommand,
  18                          DWORD dwData )
  19 {
  20     return WinHelp32A( hWnd, lpHelpFile, wCommand,
  21                        (DWORD)PTR_SEG_TO_LIN(dwData) );
  22 }
  23
  24
  25 /**********************************************************************
  26  *             WinHelp32A   (USER32.578)
  27  */
  28 BOOL32 WINAPI WinHelp32A( HWND32 hWnd, LPCSTR lpHelpFile, UINT32 wCommand,
  29                           DWORD dwData )
  30 {
  31         static WORD WM_WINHELP = 0;
  32         HWND32 hDest;
  33         LPWINHELP lpwh;
  34         HGLOBAL16 hwh;
  35         int size,dsize,nlen;
  36         if (wCommand != HELP_QUIT)  /* FIXME */
  37         {
  38             if (WinExec32("winhelp.exe -x",SW_SHOWNORMAL) <= 32)
  39                 return FALSE;
  40
  41             /* NOTE: Probably, this should be directed yield,
  42                      to let winhelp open the window in all cases. */
  43             Yield16();
  44         }
  45
  46         if(!WM_WINHELP)
  47         {
  48                 WM_WINHELP=RegisterWindowMessage32A("WM_WINHELP");
  49                 if(!WM_WINHELP)
  50                         return FALSE;
  51         }
  52
  53         hDest = FindWindow32A( "MS_WINHELP", NULL );
  54         if(!hDest)
  55                 if(wCommand == HELP_QUIT)
  56                         return TRUE;
  57                 else
  58                         return FALSE;
  59         switch(wCommand)
  60         {
  61                 case HELP_CONTEXT:
  62                 case HELP_SETCONTENTS:
  63                 case HELP_CONTENTS:
  64                 case HELP_CONTEXTPOPUP:
  65                 case HELP_FORCEFILE:
  66                 case HELP_HELPONHELP:
  67                 case HELP_FINDER:
  68                 case HELP_QUIT:
  69                         dsize=0;
  70                         break;
  71                 case HELP_KEY:
  72                 case HELP_PARTIALKEY:
  73                 case HELP_COMMAND:
  74                         dsize = strlen( (LPSTR)dwData )+1;
  75                         break;
  76                 case HELP_MULTIKEY:
  77                         dsize = ((LPMULTIKEYHELP)dwData)->mkSize;
  78                         break;
  79                 case HELP_SETWINPOS:
  80                         dsize = ((LPHELPWININFO)dwData)->wStructSize;
  81                         break;
  82                 default:
  83                         fprintf(stderr,"Unknown help command %d\n",wCommand);
  84                         return FALSE;
  85         }
  86         if(lpHelpFile)
  87                 nlen = strlen(lpHelpFile)+1;
  88         else
  89                 nlen = 0;
  90         size = sizeof(WINHELP) + nlen + dsize;
  91         hwh = GlobalAlloc16(0,size);
  92         lpwh = GlobalLock16(hwh);
  93         lpwh->size = size;
  94         lpwh->command = wCommand;
  95         lpwh->data = dwData;
  96         if(nlen) {
  97                 strcpy(((char*)lpwh) + sizeof(WINHELP),lpHelpFile);
  98                 lpwh->ofsFilename = sizeof(WINHELP);
  99         } else
 100                 lpwh->ofsFilename = 0;
 101         if(dsize) {
 102                 memcpy(((char*)lpwh)+sizeof(WINHELP)+nlen,(LPSTR)dwData,dsize);
 103                 lpwh->ofsData = sizeof(WINHELP)+nlen;
 104         } else
 105                 lpwh->ofsData = 0;
 106         GlobalUnlock16(hwh);
 107         return SendMessage16(hDest,WM_WINHELP,hWnd,hwh);
 108 }
 109
 110
 111 /**********************************************************************
 112  *             WinHelp32W   (USER32.579)
 113  */
 114 BOOL32 WINAPI WinHelp32W( HWND32 hWnd, LPCWSTR helpFile, UINT32 command,
 115                           DWORD dwData )
 116 {
 117     LPSTR file = HEAP_strdupWtoA( GetProcessHeap(), 0, helpFile );
 118     BOOL32 ret = WinHelp32A( hWnd, file, command, dwData );
 119     HeapFree( GetProcessHeap(), 0, file );
 120     return ret;
 121 }