Mercurial > octave
view src/display-available.c @ 28020:eb46a9f47164 stable release-5-2-0
Avoid color changes in MS Windows GUI terminal (bug #57658).
* scripts/miscellaneous/mkoctfile.m: Add the gcc compiler flag
"-fdiagnostics-color=never" in case of MS Windows and the GUI is running.
For the MS Windows CLI version the output looks very nice. Update year.
author | Kai T. Ohlhus <k.ohlhus@gmail.com> |
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date | Tue, 28 Jan 2020 10:57:35 +0900 |
parents | 00f796120a6d |
children | b442ec6dda5c |
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/* Copyright (C) 2012-2019 John W. Eaton This file is part of Octave. Octave is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <https://www.gnu.org/licenses/>. */ #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <stdlib.h> #if defined (OCTAVE_USE_WINDOWS_API) # include <windows.h> #elif defined (HAVE_FRAMEWORK_CARBON) # include <Carbon/Carbon.h> #elif defined (HAVE_X_WINDOWS) # include <X11/Xlib.h> #endif #include "display-available.h" const char * display_available (int *dpy_avail) { *dpy_avail = 0; const char *err_msg = ""; #if defined (OCTAVE_USE_WINDOWS_API) HDC hdc = GetDC (0); if (hdc) *dpy_avail = 1; else err_msg = "no graphical display found"; #elif defined (HAVE_FRAMEWORK_CARBON) CGDirectDisplayID display = CGMainDisplayID (); if (display) *dpy_avail = 1; else err_msg = "no graphical display found"; #elif defined (HAVE_X_WINDOWS) const char *display_name = getenv ("DISPLAY"); if (display_name && *display_name) { Display *display = XOpenDisplay (display_name); if (display) { Screen *screen = DefaultScreenOfDisplay (display); if (! screen) err_msg = "X11 display has no default screen"; XCloseDisplay (display); *dpy_avail = 1; } else err_msg = "unable to open X11 DISPLAY"; } else err_msg = "X11 DISPLAY environment variable not set"; #else err_msg = "no graphical display found"; #endif return err_msg; }