On Tue, 11 Sep 2007 11:29:38 -0300 Luiz Americo Pereira Camara <[EMAIL PROTECTED]> wrote:
> Luca Olivetti wrote: > > En/na Mattias Gärtner ha escrit: > >> Is there already a cross platform component for applications to > >> check if it is > >> already running and if yes then pass some commands to the already > >> application? > >> > >> For example clicking on files in the file browser should not open > >> a second > >> instance, but tell the already running instance to open the files. > > > > There's uniqueinstance > > http://sourceforge.net/project/shownotes.php?group_id=92177&release_id=471823 > > > > > > (The wiki is down, so I cannot give you the wiki link) *but* it > > doesn't work here under Linux (I could launch more that one > > instance of my program). > > Since I hadn't too much time to debug it, I slightly modified it to > > open and lock a file instead of using TSimpleIpc, but that makes it > > non-crossplatform. > > Since it's short I'm including it here, it could be extended to > > write the pid in the file, so another instance can somewhat contact > > the first one. > > It's working here both under win32 and linux (testraw and > testcomponent programs). Using fpc 220, Ubuntu Feisty Faw, recent > lazarus svn. > > The only missing feature under linux is the parameter list passing: > Under windows the SimpleIpc mechanism is integrated with the win32 > message loop so the IPCServer.OnMessage is called without any further > intervention. > Under unix, SimpleIpc is not integrated with any message loop so > IPCServer.OnMessage is not called. > There are to ways of doing under unix: > - Hook in the LCL message loop to call PeakMessage > - Create a thread that will call PeakMessage at a time interval > > In the below address you will find an updated component that hooks in > Application.OnIdle to call PeakMessage. Its far from optimal because > will prevent the use of OnIdle by the programmer and the parameter > list will be peaked only when the app is idle/has focus. Then use Application.AddOnIdleHandler instead. > https://svn.bountysource.com/luipack/trunk/uniqueinstance > > If someone knows a way to hook in LCL message loop to be called more > frequently than OnIdle or wants to implement a separeted thread i'm > accepting patches. Contrary to windows there are far less messages under linux/gtk so the OnIdle is not called for long periods, when you work in another program. Unless you start a TTimer. Mattias _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
