Georg Holzmann wrote:

Hallo!

Just discovered 2 bugs (or at least strange behaviours):

create a gemwin, then close the gemwin with the mouse (clicking on the "x" right above the window ...) -> crash (also if there is no gemhead ...) the console tells me:

GEM: Only using 8 color bits Direct Rendering enabled! GEM: Start rendering X connection to :0.0 broken (explicit kill or server shutdown). pd_gui: pd process exited

on my machine this does not crash. however, it does crash, when you "create" the gem-window, close it with the mouse and then hit the "destroy" button.

actually the problem is that when a display/window-handle becomes invalid (because you the window gets destroyed by someone else) and then you access this invalid handle, the X-server will crash.

in theory, i see 3 solutions to this problem: a) perform a check whether the handle is still valid before doing any critical operation on it: unfortunately i haven't found any possibility to do so b) register a callback function that gets called whenever the window is destroyed - similar to resize-callbacks: unfortunately i haven't managed to do so... c) provide X with an error-handler that gets called whenever something really bad has happened (like a critical operation on an invalid handle): unfortunately there IS already an error-handler, which for some unknown reason does not get called. (if it did, then the ErrorHandler would need to be fleshed out, in order to prevent a crash; but that is just a minor issue...)

i guess i need some help here by some oldschool X-programmers. (gÃŒnter...?)

If I want to make a fullscreen Gem-window with [fullscreen 1( my window manager (kde3.5) is really messed up ... I don't know how to explain ... resolution is really low and if I move the mouse I get out of the gemwin and see the rest of the screen (the patch, console ...) in a really low resolution ...

"fullscreen" tries to go in fullscreen-mode with the current dimension of the gemwindow (and not that of the display). so if you make do [dimen 640 480, fullscreen 1, create(, your monitor should go into fullscreen-mode @ 640x480. if this is not possible (e.g. your dimension is 500x500 and hardly any hardware supports that in fullscreen), Gem tries to find the "best" available resolution as reported by the X-server. when it finds a suitable resolution which is lower than your current one, it will switch to that; X will then make a virtual desktop.

you can change the resolutions back with Ctrl+Alt+"+"

solutions: + specify the current resolution as dimen before creating the fullscreen window. + only specify the resolutions you really want in your xorg.conf

btw, i am quite happy with this behaviour, as it allows me to go into fullscreen mode and still access the pd-patch in case of emergency.

mfg.asdr. IOhannes