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/*
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* R : A Computer Language for Statistical Data Analysis
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* Copyright (C) 1999 Guido Masarotto
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Support for tooltip
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* int addtooltip(obj,char *) (on error return 0)
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*/
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/*
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This file is an add-on to GraphApp, a cross-platform C graphics library.
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*/
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#include "internal.h"
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static HWND hwndToolTip = 0;
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#ifndef TOOLTIPS_CLASS
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#include "commctrl.h"
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#endif
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int addtooltip(control c,char *tp) {
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TOOLINFO ti;
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char *cc = (char*) &ti;
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int i, lim = sizeof (ti);
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for (i = 0; i++ < lim; *cc++ = 0);
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if (hwndToolTip == 0) {
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InitCommonControls();
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hwndToolTip = CreateWindowEx(
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0,TOOLTIPS_CLASS,NULL,WS_POPUP|TTS_ALWAYSTIP,
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CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
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hwndFrame,NULL,this_instance,NULL);
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if(!hwndToolTip) return 0;
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}
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ti.cbSize = sizeof(ti);
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ti.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
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ti.hwnd = (HWND) c->parent->handle;
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ti.uId = (UINT) c->handle;
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ti.lpszText = (LPSTR) tp;
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return
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(SendMessage(hwndToolTip, TTM_ADDTOOL, 0, (LPARAM)&ti)==TRUE)?
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1:0;
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}
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