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Black Screen of Death.
Posted: Fri Sep 08, 2017 2:44 pm
by byron.hopp
I have a fairly large app that sometimes the area of the MDI Frame turns black. Is this some sort of a resource leak in my app, any suggestions on what to check for, or how to remedy.
Bcc7
Thanks,
Byron ...
Re: Black Screen of Death.
Posted: Fri Sep 08, 2017 3:08 pm
by Rick Lipkin
Byron
I presume this happens randomly ... I would put a few well placed oWndMdi:Refresh() and perhaps accompanied by a SysReFresh() after coming out of some of your large ( add\edit ) modules .. after you close your tables ... especially if you are closing ADO tables .. and if they are Ado tables .. make sure you destroy the oRs Object .... oRs := nil ( even if oRs is a Local variable ) .. then oWndMdi:ReFresh(),SysReFresh()
Rick Lipkin
Re: Black Screen of Death.
Posted: Fri Sep 08, 2017 3:13 pm
by karinha
Question, has GRADIENT in window?
Re: Black Screen of Death.
Posted: Fri Sep 08, 2017 3:20 pm
by byron.hopp
No to the Gradiant in the background.
Rick, thanks sounds very reasonable. It does use ADO everywhere.
Re: Black Screen of Death.
Posted: Sat Sep 09, 2017 6:52 am
by Antonio Linares
Byron,
Please also check the consume of GDI objects in your app:
http://wiki.fivetechsoft.com/doku.php?i ... etresdebug
Re: Black Screen of Death.
Posted: Sat Sep 09, 2017 6:26 pm
by byron.hopp
How do you make sure they are disposed of properly?
Just launch my program, and then exit , and I get:
CheckRes.Txt file...
09/09/17 11:23:08: C:\Datafile\tmsbcc\tmsbcc.exe -- FONT,1846159188,TMDIFRAME:GETFONT(3122)->TMDICLIENT:GETFONT(3099)->TMDICLIENT:NEW(147)->TMDIFRAME:NEW(178)->MAIN(106)
09/09/17 11:23:08: C:\Datafile\tmsbcc\tmsbcc.exe -- BMP,-1476060091,TMDIFRAME:HANDLEEVENT(0)->_FWH(3602)->WINRUN(0)->TMDIFRAME:ACTIVATE(1020)->MAIN(119)
09/09/17 11:23:08: C:\Datafile\tmsbcc\tmsbcc.exe -- ====================================================================================================
End of CheckRes.txt file...
How do I get rid of these?
Byron ...
Re: Black Screen of Death.
Posted: Mon Sep 11, 2017 9:53 am
by Antonio Linares
Don't worry about those as FWH will clean them
Re: Black Screen of Death.
Posted: Mon Sep 11, 2017 2:02 pm
by Randal
byron.hopp wrote:I have a fairly large app that sometimes the area of the MDI Frame turns black. Is this some sort of a resource leak in my app, any suggestions on what to check for, or how to remedy.
Bcc7
Thanks,
Byron ...
What version of FWH are you using?
Randal
Re: Black Screen of Death.
Posted: Mon Sep 11, 2017 5:00 pm
by byron.hopp
Fivewin for Harbour 15.10
Re: Black Screen of Death.
Posted: Mon Sep 11, 2017 9:33 pm
by Randal
byron.hopp wrote:Fivewin for Harbour 15.10
Have you tried monitoring the GDI count on the Details tab of Windows (10) task manager?
Randal
Re: Black Screen of Death.
Posted: Mon Sep 11, 2017 9:57 pm
by byron.hopp
On my Windows 10 Task Manager I don't see GDI Count, where would I find it.
On Details Tab:
Name
PID
Status
User name
CPU
Memory (private working set)
Description
Or is it one of the rows of the grid?
Thanks,
Byron ...
Re: Black Screen of Death.
Posted: Wed Sep 13, 2017 3:34 am
by Randal
Byron:
You may need to right click on one of the column headings to show a list of all column headings and then check the GDI column so it's visible.
As you open and close various windows/dialogs in your app you can watch the GDI count go up/down. As you close a dialog or window the GDI count should return to the value it was before you opened it or more specifically, repeated calls to the same window/dialog/report, etc. should not cause the GDI count to continue increasing.
Randal
byron.hopp wrote:On my Windows 10 Task Manager I don't see GDI Count, where would I find it.
On Details Tab:
Name
PID
Status
User name
CPU
Memory (private working set)
Description
Or is it one of the rows of the grid?
Thanks,
Byron ...
Re: Black Screen of Death.
Posted: Wed Sep 13, 2017 4:35 pm
by byron.hopp
Randall,
Wasn't that easy, sorry man I had no idea. I'll start looking at this.
Byron ...
Re: Black Screen of Death.
Posted: Mon Nov 20, 2017 8:18 pm
by byron.hopp
Once I see this number, what action do I take based on what value?
My customer is really getting a little pissy about this happening.
Thanks,
Byron ...
Re: Black Screen of Death.
Posted: Mon Nov 20, 2017 9:44 pm
by Rick Lipkin
Byron
Can you reproduce this behavior on your machine or on other machines ... If not, I would ask your Customer to look at the offending machine(s) device manager and see what display adapter is in those machine(s).
I bet you will find this is a local machine problem and a cranky video driver.
Rick Lipkin