141 lines
4 KiB
C
141 lines
4 KiB
C
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/*** mhwin - Help Windowing Code
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*
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* Copyright <C> 1988, Microsoft Corporation
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*
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* This module contains routines dealing with opening and closing the help
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* display window.
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*
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* Revision History (most recent first):
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*
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* [] 12-Mar-1989 LN Split off of mhdisp.c
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*
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*************************************************************************/
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#include <string.h> /* string functions */
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#include "mh.h" /* help extension include file */
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/*** OpenWin - Open a window on the help file, empty & make current.
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*
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* Entry:
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* cLines = Desired size of window.
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*
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* Exit:
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* Returns help file PWND
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*
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*************************************************************************/
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PWND pascal near OpenWin (
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ushort cLines
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) {
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PWND pWinCur; /* win handle for current win */
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winContents wc; /* description of win contents */
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int winSize; /* size of current window */
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fInOpen = TRUE;
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/*
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** Get a handle to the current window, and a handle to the help window if up.
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** If they are NOT the same, then save the "current" handle as the one the
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** user had active prior to asking for help.
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*/
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GetEditorObject (RQ_WIN_HANDLE, 0, &pWinCur);
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pWinHelp = FindHelpWin (FALSE);
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if (pWinHelp != pWinCur)
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pWinUser = pWinCur;
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/*
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** If no help window was found. Attempt to split the current window, if
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** it's big enough, and that's requested
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*/
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if (!pWinHelp) {
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GetEditorObject (RQ_WIN_CONTENTS | 0xff, pWinUser, &wc);
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#if defined(PWB)
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/*
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** In PWB we just ask the editor to split the current window in half.
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*/
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fSplit = FALSE;
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if ((wc.arcWin.ayBottom - wc.arcWin.ayTop >= 12) && fCreateWindow) {
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fSplit = SplitWnd (pWinUser, FALSE, (wc.arcWin.ayBottom - wc.arcWin.ayTop)/2);
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GetEditorObject (RQ_WIN_HANDLE, 0, &pWinHelp);
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}
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}
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/*
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** We have a window, of some sort, attempt to resize the window to the
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** requested size.
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*/
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if (cLines) {
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cLines += 2;
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GetEditorObject (RQ_WIN_CONTENTS | 0xff, pWinHelp, &wc);
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wc.arcWin.ayBottom = wc.arcWin.ayTop + cLines;
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Resize (pWinHelp, wc.arcWin);
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}
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#else
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/*
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** Non PWB: Attempt to split the resulting current window to the desired size.
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** by moving the cursor there, and executing arg window. Note that if the
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** window had already existed, we won't even try to resize.
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*/
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winSize = wc.arcWin.ayBottom - wc.arcWin.ayTop;
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if ( (cLines < 6)
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|| (cLines > (ushort)(winSize - 6)))
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cLines = (ushort)(winSize / 2);
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if ((cLines > 6) && fCreateWindow) {
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fSplit = SplitWnd(pWinUser, FALSE, (LINE)cLines);
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//fSplit = SplitWnd(pWinUser, FALSE, wc.flPos.lin + (long)cLines);
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// rjsa MoveCur (wc.flPos.col, wc.flPos.lin + (long)cLines);
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// rjsa fSplit = fExecute ("arg window");
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GetEditorObject (RQ_WIN_HANDLE, 0, &pWinHelp);
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}
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else
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pWinHelp = pWinUser;
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}
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#endif
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/*
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** Set the window to be the current window, and move the help file to the
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** top of that window's file list.
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*/
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SetEditorObject (RQ_WIN_CUR | 0xff, pWinHelp, 0);
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DelFile (pHelp);
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asserte (pFileToTop (pHelp));
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fInOpen = FALSE;
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return pWinHelp;
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/* end OpenWin */}
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/*** FindHelpWin - Locate window containing help & make current
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*
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* For all windows in the system, look for a window that has the help file
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* in it. If found, set focus there.
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*
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* Entry:
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* fSetCur = TRUE=> set help window current when found
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*
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* Globals:
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* cWinSystem = returned number of windows in system
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*
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* Returns:
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* pWin of help file
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*
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*************************************************************************/
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PWND pascal near FindHelpWin (
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flagType fSetCur
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) {
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int cWinSystem; /* number of windows in system */
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winContents wc; /* description of win contents */
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pWinHelp = 0;
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for (cWinSystem=1; cWinSystem<=8; cWinSystem++) {
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if (GetEditorObject (RQ_WIN_CONTENTS | cWinSystem, 0, &wc)) {
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if (wc.pFile == pHelp) {
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if (fSetCur) {
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SetEditorObject (RQ_WIN_CUR | cWinSystem, 0, 0);
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GetEditorObject (RQ_WIN_HANDLE, 0, &pWinHelp);
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}
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else
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GetEditorObject (RQ_WIN_HANDLE | cWinSystem, 0, &pWinHelp);
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break;
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}
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}
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else
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break;
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}
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return pWinHelp;
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/* end FindHelpWin */}
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