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When you make a window in glut using glutCreateWindow it puts a top to the window? What if I want to do some OpenGL rendering without a window top?

This probably doesn't make much sense without a picture:

Window Top

Essentially I want to remove this from the window.

2 Answers2

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Use GLUT_BORDERLESS and GLUT_CAPTIONLESS as additional parameters to the glutInitDisplayMode() to get rid of window border and caption as follow:

glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE|GLUT_DEPTH|GLUT_BORDERLESS|GLUT_CAPTIONLESS);

At least it works pretty good with freeglut 2.8.1 on Windows.

enter image description here

Stone
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The proper terminology for what you want is "undecorated window" or "borderless window". Unfortunately, I can't find any GLUT calls which let you control window decorations.

The closest I was able to find was glutFullScreen which, on X11 platforms, is often implemented by maximizing an undecorated window... but it'll re-decorate it if you un-maximize it.

This forum thread seems to confirm my conclusions.

ssokolow
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  • Hmm. Thanks. I guess I'll have to ask another question related to undercoating a window. –  Sep 26 '10 at 21:45
  • Cars are undercoated, windows are undecorated (lacking decorations). As for making an undecorated window with GLUT, if you do it, it'll be specific to the platform you're on and I've only seen hacks to do it on X11. – ssokolow Sep 26 '10 at 23:04