On Tue, Jul 17, 2007 at 01:12:16PM +0200, Robert Manea wrote:
* Andrea Rossato (mailing_list@istitutocolli.org) wrote:
Now, how can you handle X Events in such a situation and specifically an Exposure event?
Well, you would keep the already rendered string in apixmap.
This pixmap will be updated whenever you read a new value, actually whenever you would need to build a new string out of your list.
On expose events you just copy that pixmap into the window, without any further cheks.
By definition that pixmap always consists of the newest values you could get.
Or did I get something wrong?
perhaps my description was unclear. The string to be displayed is updated according to a configurable frequency (default 1 sec.), with or without an Expose event. For instance, in dzen you have a "while running handle_xev()", and handle_xev is a case analysis ("switch case Exposure" etc etc). Now, as far as I know, dzen receives a string and prints it. Now, my loop is: "while running": 1. readVariablesSetByOtherThreads() 2. printVariablesInPixmap 3. copyPixmapToWindow 4. start reading again. That is to, I cannot use XNextEvent because that is going to stop my thread since a new expose event is read. Now can I intercept an Expose event without XNextEvent()? Or, is there a function like XNextEvent that takes a timeout argument? Thanks for your kind attention (as usual!). Andrea