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Additional clarification about GLUT_ALLOW_NEGATIVE_WINDOW_POSITION

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(cherry picked from commit 836fe46441)

(cherry picked from commit 836fe46441)

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1778 7f0cb862-5218-0410-a997-914c9d46530a
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dcnieho 2015-12-14 16:22:38 +00:00
parent 5a86d86eef
commit f812349a8f
1 changed files with 10 additions and 5 deletions
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15
freeglut/web-src/docs/api.php
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@ -313,10 +313,14 @@ upper left hand corner of the outside of the window (the non-client
area) is at (x,y) and the size of the drawable (client) area is (w,h).
The coordinates taken by <tt>glutInitPosition</tt> and
<tt>glutPositionWindow</tt>, as well as the coordinates provided by
<i>FreeGLUT</i> when it calls the <tt>glutPositionFunc</tt> callback,
specify the top-left of the non-client area of the window.</li>
<i>freeglut</i> when it calls the <tt>glutPositionFunc</tt> callback,
specify the top-left of the non-client area of the window. By default
only positive-signed coordinates are supported. If GLUT_ALLOW_NEGATIVE_WINDOW_POSITION
is enabled, then negative coordinates are supported. An exception
for <tt>glutPositionWindow</tt> exists as it's always supported negative
window coordinates.</li>
<li>When you query the size and position of the window using
<tt>glutGet</tt>, <i>FreeGLUT</i> will return the size of the drawable
<tt>glutGet</tt>, <i>freeglut</i> will return the size of the drawable
area--the (w,h) that you specified when you created the window--and the
coordinates of the upper left hand corner of the drawable (client)
area--which is <u>NOT</u> the (x,y) position of the window you specified
@ -440,7 +444,7 @@ functions specify a desired position and size for windows that
<i>freeglut</i> will create in the future.
The position is measured in pixels from the upper left hand corner of the
screen, with "x" increasing to the right and "y" increasing towards the bottom
of the screen. The size is measured in pixels. <i>Freeglut</i>
of the screen. The size is measured in pixels. <i>Freeglut</i>
does not promise to follow these specifications in creating its windows,
but it certainly makes an attempt to.
</p>
@ -463,7 +467,8 @@ coordinates. But if GLUT_ALLOW_NEGATIVE_WINDOW_POSITION is enabled,
then negative window coordinates can be used. This is useful for
multi-montitor setups where the second monitor may be in the negative
desktop space of the primary monitor, as now the window can be placed
on the additional monitors.
on the additional monitors. Furthermore, this flag also determines how
negative coordinates and sizes are interpreted for subwindows.
</p>
<p>