We observed that ourselves. Basically if Windows Installer thinks that it has gone "too far" and it isn't reasonable/possible to cancel it ignores that request. Internally it is a multi-threaded/multi-process system and it is possible that the signal internally doesn't route fast enough, but I don't really know the reason for sure.
Windows Installer can/does ask you to disable the Cancel button at time(s) during the transaction but there sometimes seems to be a window of time where the cancel will be ignored before the disable request arrives. See INSTALLMESSAGE_COMMONDATA in the http://msdn.microsoft.com/en-us/library/aa370573(VS.85).aspx page. -----Original Message----- From: CristianG [mailto:cristian.gherghine...@gmail.com] Sent: Wednesday, August 26, 2009 6:05 AM To: wix-users@lists.sourceforge.net Subject: [WiX-users] Cancel from Embedded UI within the ProcessMessage() method doesn't always work Hi, I'm using the Embedded UI feature (thanks DTF) from Windows Installer 4.5 and noticed that the installation is not always canceled when returning MessageResult.Cancel from the: public MessageResult ProcessMessage(InstallMessage messageType, Record messageRecord, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton) method. At the beginning of the progress, returning MesssageResult.Cancel, it cancel the installation. However, after a certain action, I don't know exactly which, it doesn't cancel it anymore. Does anyone else encountered this behavior ? or does anyone know from which point you can't cancel the installation anymore ? Thanks -- View this message in context: http://n2.nabble.com/Cancel-from-Embedded-UI-within-the-ProcessMessage-metho d-doesn-t-always-work-tp3514922p3514922.html Sent from the wix-users mailing list archive at Nabble.com. ---------------------------------------------------------------------------- -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
