Black Screen of Death.

Black Screen of Death.

Postby byron.hopp » Fri Sep 08, 2017 2:44 pm

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

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Byron ...
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Re: Black Screen of Death.

Postby Rick Lipkin » Fri Sep 08, 2017 3:08 pm

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()

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Last edited by Rick Lipkin on Fri Sep 08, 2017 3:13 pm, edited 1 time in total.
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Re: Black Screen of Death.

Postby karinha » Fri Sep 08, 2017 3:13 pm

Question, has GRADIENT in window?
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Re: Black Screen of Death.

Postby byron.hopp » Fri Sep 08, 2017 3:20 pm

No to the Gradiant in the background.
Rick, thanks sounds very reasonable. It does use ADO everywhere.
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Re: Black Screen of Death.

Postby Antonio Linares » Sat Sep 09, 2017 6:52 am

Byron,

Please also check the consume of GDI objects in your app:

http://wiki.fivetechsoft.com/doku.php?id=fivewin_function_setresdebug
regards, saludos

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Re: Black Screen of Death.

Postby byron.hopp » Sat Sep 09, 2017 6:26 pm

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 ...
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Re: Black Screen of Death.

Postby Antonio Linares » Mon Sep 11, 2017 9:53 am

Don't worry about those as FWH will clean them :-)
regards, saludos

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Re: Black Screen of Death.

Postby Randal » Mon Sep 11, 2017 2:02 pm

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?

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Re: Black Screen of Death.

Postby byron.hopp » Mon Sep 11, 2017 5:00 pm

Fivewin for Harbour 15.10
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Re: Black Screen of Death.

Postby Randal » Mon Sep 11, 2017 9:33 pm

byron.hopp wrote:Fivewin for Harbour 15.10


Have you tried monitoring the GDI count on the Details tab of Windows (10) task manager?

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Re: Black Screen of Death.

Postby byron.hopp » Mon Sep 11, 2017 9:57 pm

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,

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Re: Black Screen of Death.

Postby Randal » Wed Sep 13, 2017 3:34 am

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 ...
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Re: Black Screen of Death.

Postby byron.hopp » Wed Sep 13, 2017 4:35 pm

Randall,

Wasn't that easy, sorry man I had no idea. I'll start looking at this.

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Re: Black Screen of Death.

Postby byron.hopp » Mon Nov 20, 2017 8:18 pm

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,

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Re: Black Screen of Death.

Postby Rick Lipkin » Mon Nov 20, 2017 9:44 pm

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.

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