You can use a ComponentSearch Element to find the installed location of an existing component on the system.
- Brett > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > teckJBMsia > Sent: Thursday, April 19, 2007 3:27 AM > To: wix-users@lists.sourceforge.net > Subject: Re: [WiX-users] What is the use of an application > (.exe) GUID ? > > > Hi, > > Is it possible for my another installer (.msi) to detect > the presence of the EXE by using the GUID ? If it is > possible, how to do it ? If it's not possible, is there any > other way to do this ? Cheers ! > > > Mike Dimmick-2 wrote: > > > > Windows Installer installs products in units of components > - they are > > the building blocks of the installation. It installs a > component if it > > believes that the component is not up to date or is > missing, which it > > determines from the component's key path. It stores a list > of all the > > components which are installed, and the locations they are > installed > > to, in the Windows registry. > > This acts as a reference count to decide when to remove the > component > > on uninstallation. > > > > It is therefore vitally important that the component GUIDs > are unique > > to each individual component, and that the composition of the > > component is the same for each definition of the same component (as > > identified by the same GUID). It is also essential that resources > > (files, registry keys) are not defined by multiple different > > components, as they can be removed prematurely as Windows Installer > > detects that one of the components owning that resource has > reached a > > zero reference count and should be removed. > > > > For more see Rob's blog entry 'Component Rules 101', a copy > of which > > is in the WiX documentation (WiX.chm) or at > > http://blogs.msdn.com/robmen/archive/2003/10/18/56497.aspx. > > > > -- > > Mike Dimmick > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > teckJBMsia > > Sent: 18 April 2007 09:43 > > To: wix-users@lists.sourceforge.net > > Subject: [WiX-users] What is the use of an application (.exe) GUID ? > > > > > > Hi, > > > > Following is quoted from WIX Tutorial. > > > > <Component Id='MainExecutable' > > Guid='YOURGUID-83F1-4F22-985B-FDB3C8ABD471'> > > <File Id='FoobarEXE' Name='Foobar10.exe' > LongName='FoobarAppl10.exe' > > DiskId='1'Source='FoobarAppl10.exe' Vital='yes'> > > > > I wish to know what is the purpose of that Guid. > > > > Besides that, can WIX search for that GUID before installing a > > program to make sure that program has not been installed > previously ? > > ( Note : in my case, the product GUID can be same but not > the program > > ). > > > > Cheers ! > > > > > > > > > ---------------------------------------------------------------------- > > --- This SF.net email is sponsored by DB2 Express Download > DB2 Express > > C - the FREE version of DB2 express and take control of > your XML. No > > limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > WiX-users mailing list > > WiX-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/wix-users > > > > > > -- > View this message in context: > http://www.nabble.com/What-is-the-use-of-an-application-%28.ex e%29-GUID---tf3599651.html#a10073901 > Sent from the wix-users mailing list archive at Nabble.com. > > > -------------------------------------------------------------- > ----------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > WiX-users mailing list > WiX-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wix-users > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
