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OS/2 Shareware BBS: 10 Tools
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videotlk.zip
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SAMPLES
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EX5
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EX5.ZIP
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HELPFUNC.C
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1999-02-25
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6KB
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/*------------------------------------------------------------------*
* *
* Video Toolkit For OS/2 Version 1.0 *
* Example Application No. 4. *
* Written by Stephen Sloan. *
* Date : 22/02/95. *
* Copyright (c) Abbotsbury Software Ltd., United Kingdom. 1995. *
* *
* Filename : helpfunc.c *
* *
*------------------------------------------------------------------*/
#define INCL_PM
#include <os2.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "helpfunc.h"
extern HWND HwndFrame;
extern void msg_box (UCHAR *txt, UCHAR *title, ULONG options);
HAB hab;
char szTitle[MESSAGELEN];
static UCHAR *Copyright =
"Copyright (c) Abbotsbury Software Ltd., UK. 1994-1995. All Rights Reserved";
static HWND hwndHelpInstance;
static CHAR szLibName[HELPLIBRARYNAMELEN];
static CHAR szWindowTitle[HELPLIBRARYNAMELEN];
static BOOL fHelpEnabled = FALSE;
void HelpInit (HWND hwnd)
{
HELPINIT hini;
hab = WinQueryAnchorBlock (HwndFrame);
WinLoadString(hab, 0, IDS_TITLEBAR, sizeof (szTitle), szTitle);
fHelpEnabled = FALSE;
hini.cb = sizeof (HELPINIT);
hini.ulReturnCode = 0L;
hini.pszTutorialName = (PSZ)NULL;
hini.phtHelpTable = (PHELPTABLE)MAKELONG (HELP_TABLE, 0xFFFF);
hini.hmodHelpTableModule = (HMODULE)0;
hini.hmodAccelActionBarModule = (HMODULE)0;
hini.idAccelTable = 0;
hini.idActionBar = 0;
if (!WinLoadString (hab,
(HMODULE)0,
IDS_HELPWINDOWTITLE,
HELPLIBRARYNAMELEN,
(PSZ)szWindowTitle))
{
msg_box ("Error loading window title",
"Error", MB_OK | MB_ERROR);
return;
}
hini.pszHelpWindowTitle = (PSZ)szWindowTitle;
if (!WinLoadString (hab,
(HMODULE)0,
IDS_HELPLIBRARYNAME,
HELPLIBRARYNAMELEN,
(PSZ)szLibName))
{
msg_box ("Error loading library name",
"Error", MB_OK | MB_ERROR);
return;
}
hini.pszHelpLibraryName = (PSZ)szLibName;
hwndHelpInstance = WinCreateHelpInstance (hab, &hini);
if (!hwndHelpInstance || hini.ulReturnCode)
{
// msg_box ("Error creating help instance",
// "Error", MB_OK | MB_ERROR);
return;
}
if (!WinAssociateHelpInstance (hwndHelpInstance, hwnd))
{
msg_box ("Error associating help instance",
"Error", MB_OK | MB_ERROR);
return;
}
fHelpEnabled = TRUE;
}
void HelpHelpForHelp ()
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_DISPLAY_HELP, NULL, NULL))
{
msg_box ("Error displaying help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void HelpExtended ()
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_EXT_HELP, NULL, NULL))
{
msg_box ("Error displaying extended help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void HelpKeys ()
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_KEYS_HELP, NULL, NULL))
{
msg_box ("Error displaying keys help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void HelpIndex ()
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_HELP_INDEX, NULL, NULL))
{
msg_box ("Error displaying index help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void HelpContents ()
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_HELP_CONTENTS, NULL, NULL))
{
msg_box ("Error displaying contents help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void HelpAbout ()
{
WinDlgBox (HWND_DESKTOP,
HwndFrame,
(PFNWP)AboutDlgProc,
(HMODULE)NULLHANDLE,
IDD_PRODUCTINFO,
NULL);
WinInvalidateRegion (HwndFrame, NULLHANDLE, FALSE);
}
void DisplayHelpPanel (SHORT idPanel)
{
if (fHelpEnabled)
{
if (WinSendMsg (hwndHelpInstance, HM_DISPLAY_HELP,
MPFROM2SHORT (idPanel, NULL), MPFROMSHORT (HM_RESOURCEID)))
{
msg_box ("Error displaying help panel",
"Error", MB_OK | MB_ERROR);
}
}
}
void DestroyHelpInstance ()
{
if (hwndHelpInstance)
WinDestroyHelpInstance (hwndHelpInstance);
}