mvh@cfa250.harvard.edu (Mike VanHilst B-441 x57260) (05/01/89)
Is there any way to get the window manager's decision as regards an attempt to place a window without actually mapping the window. I have an image processing application with several windows, not all of which are normally mapped. I need to know the size of the windows for allocating buffers and computing their contents. I would prefer not to do the computation at the time the user requests the window as that slows the response (I am prepared to recompute the contents in response to a ConfigureNotify). My current method is to map all the windows and wait for the expose events to learn what size they actually end up being. Then those I don't want initially mapped get unmapped. The result is windows appearing, with some disappearing and others remaining empty while their contents are computed. Is there a more aesthetic approach to this problem? Thanks, Mike VanHilst
rws@EXPO.LCS.MIT.EDU (05/01/89)
Is there any way to get the window manager's decision as regards an attempt
to place a window without actually mapping the window.
Nope. There are window managers that have to delay policy decisions until
map time (e.g. a tiling window manager).
My current method is to map all the windows and wait for the expose events
to learn what size they actually end up being. Then those I don't want
initially mapped get unmapped.
There is no guarantee that a later map won't change the geometry.