Custom refnum - what is the underlying numeric type of refnums and how do I comply with the subtype
Specific refnum I am planning using is based on the byte stream file refnum - and will be passed in and out of a DLL via code interface nodes - would it be U32 or I32 underlying type or something else?
I am basing the sub-type concept on the following online reference:
http://labviewwiki.org/Refnum
Is the above correct and how are the 8 bit values encoded into the refnum numeric type (MSB's or other?)
Steve_Mowbray wrote:
Thanks for prompt and clear response
- labview file manager functions can be used to access the file OR the file descriptor can be passed to my own custom code functions (I hope)
That last one is undocumented and may not work on all LabVIEW platforms. It is true for older 32 bit versions of LabVIEW but may change at any time at NIs discretion since they never documented that nor guaranteed that it might work that way.
Also on Windows there are several different file descriptors possible. First you have the WinAPI HANDLE, then the C runtime "int fd" and FILE datatypes. All of them are not the same, but the LabVIEW File did in the past map to the HANDLE.
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Hi Experts,
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What is the use of table maintance generator and how it is used ddic
hi dear friends
i would like to know about how the table maintaience generator is used in ddic .i have the step by step processor of that but i would like to know importance and advantages of it .Nani,
With the help of the table maintenance generator, you are able to maintain the ENTRIES of the table in SM30 transaction.
It can be set in transaction SE11 - Tools - Table maintenance generator.
Table maintanance Generator is used to manually input values using transaction sm30
follow below steps
1) go to se11 check table maintanance check box under attributes tab
2) utilities-table maintanance Generator-> create function group and assign it under
function group input box. Also assign authorization group default &NC& .
3) select standard recording routine radio in table table mainitainence generator to move table
contents to quality and production by assigning it to request.
4) select maintaience type as single step.
5) maintainence screen as system generated numbers this dialog box appears when you click on create button
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One step, two step in Table Maintenance Generator
Single step: Only overview screen is created i.e. the Table Maintenance Program will have only one screen where you can add, delete or edit records.
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SM30 is used for table maintenance(addition or deletion of records),
For all the tables in SE11 for which Table maintenance is selected , they can be maintained in SM30
Sm30 is used to maintain the table ,i.e to delete ,insert or modify the field values and all..
It creates the maintenance screen for u for the aprticular table as the maintenance is not allowed for the table..
In the SE11 delivery and maintenance tab, keep the maintenance allowed..
Then come to the SM30 and then enter the table name and press maintain..,
Give the authorization group if necessary and give the function group and then select maintenance type as one step and give the screen numbers as system specified..
Then create,,,
Then u will able to see the maintenance view for the table in which u can able to insert and delete the table values...
We use SM30 transaction for entering values into any DB table.
First we create a table in SE11 and create the table maintenance generator for that Table using (utilities-> table maintenance generator) and create it.
Then it will create a View.
After that from SM30, enter the table name and Maintain, create new entries, change the existing entries for that table.
For further help look into these links
http://help.sap.com/saphelp_46c/helpdata/EN/cf/21eb6e446011d189700000e8322d00/frameset.htm
http://help.sap.com/saphelp_bw30b/helpdata/en/69/c2516e4ba111d189750000e8322d00/content.htm
Table
Don't forget to reward if useful.....
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