BUG: Report control sometimes freezes!

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   Hello;

We're using several instances of the report control within our app. Sometimes one of these report controls freezes drawing. It does not update it's states (drawing freezes). E.g. the vertical scrollbar is visible and can be moved by mouse but the content is always the same. Also when clicking into the control the selection does not change, but when using the keyboard arrow keys to navigate I receive change events in the owner of the control.

Firts we thought that we forgot to call EndUpdate() after a BeginUpdate() call, but we always use CXTPReportControl::CUpdateContext guards throughout the whole application. So it definitely can't be within our app.
I just checked the XT source code and found out that in several places the CXTPReportControl::CUpdateContext isn't used and I found functions with EndUpdate()/BeginUpdate() (in this order) calls. Perhaps here's the problem...

Has anyone else encountered the same problem? How did you solve this?

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mgampi Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14 July 2003 Status: Offline Points: 1198	Post Options Post Reply Quote mgampi Report Post Thanks(0) Quote Reply Topic: BUG: Report control sometimes freezes! Posted: 26 June 2012 at 4:42pm
	Hello; We're using several instances of the report control within our app. Sometimes one of these report controls freezes drawing. It does not update it's states (drawing freezes). E.g. the vertical scrollbar is visible and can be moved by mouse but the content is always the same. Also when clicking into the control the selection does not change, but when using the keyboard arrow keys to navigate I receive change events in the owner of the control. Firts we thought that we forgot to call EndUpdate() after a BeginUpdate() call, but we always use CXTPReportControl::CUpdateContext guards throughout the whole application. So it definitely can't be within our app. I just checked the XT source code and found out that in several places the CXTPReportControl::CUpdateContext isn't used and I found functions with EndUpdate()/BeginUpdate() (in this order) calls. Perhaps here's the problem... Has anyone else encountered the same problem? How did you solve this?
	Martin Product: Xtreme Toolkit v 19.0.0, new Projects v 19.1.0 Platform: Windows 10 v 1909 (64bit) Language: VC++ 2017

mihey Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 14 May 2003 Location: Germany Status: Offline Points: 45	Post Options Post Reply Quote mihey Report Post Thanks(0) Quote Reply Posted: 16 December 2014 at 4:56am
	Hi, I‘ve experienced a similar problem with my Report Control. After some debugging I’ve found out, that the effect had something todo with xtpReportScrollModeSmooth ScrollMode in a very special case (a row in a hidden group changes his parent). Sometimes the EnsureVisibleSmooth in the CXTPReportSection::EnsureVisible method crashes and the caller SetFocusedRow method does not have an EndUpdate executed. Do you also use xtpReportScrollModeSmooth scroll mode? Try to switch to xtpReportScrollModeBlockCount instead. Perhaps that would be a workaround. Best Regards, Mikhail Product: Xtreme Toolkit Version 16.2.0 Platform: Windows 7 (64bit) Language: Visual C++ 2003

mgampi Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14 July 2003 Status: Offline Points: 1198	Post Options Post Reply Quote mgampi Report Post Thanks(0) Quote Reply Posted: 16 December 2014 at 7:26am
	Hello; I'm not using the xtpReportScrollModeSmoothscroll mode! But I still have the problems.
	Martin Product: Xtreme Toolkit v 19.0.0, new Projects v 19.1.0 Platform: Windows 10 v 1909 (64bit) Language: VC++ 2017

mcmastl Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 14 April 2015 Status: Offline Points: 79	Post Options Post Reply Quote mcmastl Report Post Thanks(0) Quote Reply Posted: 20 April 2015 at 12:55pm
	Hi Martin, Thank you for letting us know of this issue. We have let our development team know to look further into the issue. If the matter has been resolved please let us know.
	Luke McMasters, Support Team CODEJOCK SOFTWARE SOLUTIONS