Patrick Scheibe wrote:
[...]In the past one defined a subwindow in the following way:
uniW<- createSubWindow mainW (WindowPosition space space) (WindowSize 600 400)
Now the parameters are away.
Huh? The parameters are still there, only the types have been renamed a bit (because they are now not only used for windows): uniW <- createSubWindow mainW (Position space space) (Size 600 400)
[...] And how does the reshaping of subwindows work? If you resize your mainwindow, the mainreshape is called with the new size. When and with what size is the subwindow reshapecallback-func called by OpenGL? Or am I forced to call it by myself in the mainreshape?
First a small nitpicking comment: OpenGL never does any window handling, It is always the windowing toolkit used, which is GLUT in our case. You can use OpenGL with GTK+, wxWindows, etc., too. From the documentation of reshapeCallback: When a top-level window is reshaped, subwindows are not reshaped. It is up to the GLUT program to manage the size and positions of subwindows within a top-level window. Still, reshape callbacks will be triggered for subwindows when their size is changed using Graphics.UI.GLUT.Window.windowSize. This is not a deficiency of HOpenGL, but it is the way how GLUT works. So you have to reposition and resize the subwindows manually in the reshape callback of the toplevel window, like: currentWindow $= uniW windowPosition $= Position 12 34 windowSize $= Size 56 78 You could have a look at Nate Robin's OpenGL tutorials, which use subwindows: http://www.xmission.com/~nate/tutors.html Cheers, S.