| Did you know ... | Search Documentation: |
 | Predicate has_display/0 |
- HOME
- DOWNLOAD
- DOCUMENTATION
- TUTORIALS
- Beginner▶
- Advanced▶
- Web applications▶
- Semantic web▶
- Graphics▶
- Machine learning▶
- External collections▶
- For packagers▶
- COMMUNITY
- COMMERCIAL
- WIKI
- has_display is semidet[private]
- True when we can run graphics. Graphics are always available on
Windows or MacOS (although they may appear on the main console
when invoked from a remote login). On Linux, we can detect
DISPLAY(X11) orWAYLAND_DISPLAY(Wayland). We also assume we can run graphics if theSDL_VIDEO_DRIVERis set todummy, implying we try to run headless.