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< > BotCompany Repo | #1004381 - isHeadless - "headless" graphics environment (no display)?

JavaX fragment (include)

static Boolean isHeadless_cache;

static bool isHeadless() {
  if (isHeadless_cache != null) ret isHeadless_cache;
  if (isAndroid()) ret isHeadless_cache = true;
  if (GraphicsEnvironment.isHeadless()) ret isHeadless_cache = true;
  
  // Also check if AWT actually works.
  // If DISPLAY variable is set but no X server up, this will notice.
  
  try {
    SwingUtilities.isEventDispatchThread();
    ret isHeadless_cache = false;
  } catch (Throwable e) { ret isHeadless_cache = true; }
}

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Snippet ID: #1004381
Snippet name: isHeadless - "headless" graphics environment (no display)?
Eternal ID of this version: #1004381/3
Text MD5: 62eea8c9f87beb0836258e0653c95257
Author: stefan
Category: javax
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2018-05-04 17:53:11
Source code size: 505 bytes / 15 lines
Pitched / IR pitched: No / No
Views / Downloads: 439 / 605
Version history: 2 change(s)
Referenced in: [show references]