We have a clipper application that has run fine on Windows XP for years. Being forced to upgrade to Windows 7 32bit, the application run but will hang inconsistently but regularly.

Clipper, from Nantucket Corp and later Computer Associates, started out as a native code compiler for dBase III databases, and later evolved in to a full fledge database language and application development environment.

It usually happens after running a long process when the summary report is displayed. Users that enter data consistently do not get the hang up. Clipper 5.2e Blinker 5.10 Turned off all power saving and sleep functions. We have set the memory settings on the shortcut and set compatibility settings. Any help would be appreciated. Dlzc 22/5/2014, 16:26 น. Dear david.: On Thursday, May 22, 2014 2:39:01 PM UTC-7, wrote: > We have a clipper application that has run fine > on Windows XP for years.

Being forced to upgrade > to Windows 7 32bit, Windows 7 64-bit Professional works fine too, if you download 'Virtual PC' from M$. This installs essentially 32-bit Windows XP as a virtual machine on your computer. Something like this for Win 8, but not clear to me yet how to do that. Also, DOSbox is freeware, and many people have good success. > the application run but will hang inconsistently > but regularly. It usually happens after running > a long process when the summary report is > displayed.

Users that enter data consistently do > not get the hang up. Recommend you review these search results. Windows 7 32-bit hangs ntvdm site: Clipper was a CPU cycle hog.

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I am not sure update to 5.2e fixed this. If it did, and you used some other method, there may be some conflict. Do you have any wait states programmed into your 'long process', like calls to inkey(), or inkey(0.1) at some infrequent spots? Have you reviewed this thread? Smith unk.@googlegroups.com 28/5/2014, 17:51 น. EDS 29/5/2014, 17:18 น.

Thanks for your post. On the following page: there is a solution explained. 'Every now and then, the application will hang - seemingly randomly. With that in mind we re-ran the test program with processor affinity set to use only CPU0 in Task Manager. The results were the same as disabling hyper-threading - no NTVDM hang!' If Clipper program hangs on Win 7, 8, 8.8 with multi core processors (4+ cores), the solution is to set affinity to only one core. No hangs anymore.

Petar unk.@googlegroups.com 5/11/2014, 5:48 น. Timec.@gmail.com 5/12/2014, 4:24 น. Dear timec.: On Friday, December 5, 2014 5:24:59 AM UTC-7, wrote. Screen flickers when mouse is navigated > > 2.

Screen shakes when new data is displayed at a > location where data is already existing This is really odd. Have your video drivers been updated to current? Chr(16), chr)17).does not get displayed > after converting with xharbour. This is CODEPAGE settings. Review the xharbour newsgroup for discussions of what codepages display these characters correctly. HOW TO DISPLAY.JPG FILE IN CLIPPER 5.3 > APPLICATION (.prg files) David A. Karti dlya mafii dlya pechati video. Smith david.@dirconsulting.com, 10:26 น.

Dear david.: You have to figure out what the root cause of this is. It could be another program has stolen all keyboard input, or has installed itself in the 'keybaord interrupt stack'.

For similar behaviors. It may have something to do with your printer driver. It may have something to do with the patch you installed to allow Clipper code to run on a faster CPU: And at some point, you just need to move to (x)Harbour (or X#), and stop mucking around with Clipper. Have you changed this wait look to use inkey(0.1) or similar? Smith mgk1, 5:31 น.

Hi Charlie, Since this application is very old, we are not sure if it can support the Windows 7, and with the compatibilty mode to the earlier system. Does it use other components, could you please ensure the components have been installed and can run in Windows 7; on the other hand, please try to use the way in below article: Other ywas, could you please try to run it in some third part DOS simulation environment, such as. Sincerely, Bob Bao [MSFT] MSDN Community Support Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Hi Charlie, Since this application is very old, we are not sure if it can support the Windows 7, and with the compatibilty mode to the earlier system. Does it use other components, could you please ensure the components have been installed and can run in Windows 7; on the other hand, please try to use the way in below article: Other ywas, could you please try to run it in some third part DOS simulation environment, such as. Sincerely, Bob Bao [MSFT] MSDN Community Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. Thanks Bob, Yesterday, I spent my time just to figure it out and thank God, I fixed it. I never used third party software because it will be harder to the users. I found out that these 2 necessary files (himem.sys, setver.exe) were transferred at%SystemRoot% system32 before%SystemRoot%.