Powerbuilder Application Execution Error Null Object Reference
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Error R0002 Powerbuilder
object reference at line ...event of ... Want to Advertise Here? Solved Powerbuilder: R0002 error, Null object reference at line ...event of ... Posted on 2007-07-09 Editors IDEs 1 Verified Solution 10 Comments
Powerbuilder Application Execution Error R0039
13,623 Views Last Modified: 2013-12-20 I am getting the following error message in PB 9.0 It does not occur consistently, so it's difficult for me to debug and find out why it's happening. Powerbuilder Application Execution Error (R0002) Application Terminated. Error: Null object reference at line 79 in ue_line_changed event of object w_test_os And this is the following code where the error is pointing to : m_owner_supply.mf_change_details(ll_inst,ls_line) Where m_owner_supply is a menu object and mf_change_details is a menu function which only queries one table and does a count(*) to change an icon on the toolbar. I thought it had something to do with the menu object, so i tried the following : IF ISVALID ( m_owner_supply) = TRUE THEN m_owner_supply.mf_change_details(ll_inst,ls_line) END IF but that did not resolve the issue. it occured randomly again by a user. Any help on WHY this is occuring and WHAT i can do to resolve this would be greatly appreciated. If you've seen similar problems in other programming languages , please let me know what the resolution was or why it occured in those apps. thanks. 0 Question by:badtz7229 Facebook Twitter LinkedIn Google LVL 1 Best Solution byVee_Mod Closed, 500 points refunded. Vee_Mod Community Support Moderator Go to Solution 9 Comments LVL 14 Overall: Level 14 Editors IDEs 14 Message Expert Comment by:sandeep_patel2007-07-09 m_owner_supply is the menu itself or a variable of type menu?. This error occurs when the object you are referring is not available in memory. It may be possible that m_owner_supply is attached to some window and that window is not opened when you are calling this fu
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://stackoverflow.com/questions/944136/same-function-in-different-windows-in-powerbuilder Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Same function in different windows in Powerbuilder powerbuilder application up vote 1 down vote favorite I have two windows let say w_base1 and w_base2. Now in w_base1 I have below statement written which is working fine. ls_Value = This.GetItemString(ll_CurrRow, "af_value") Now the same above statement I want to use in w_base2 but it is giving below error: Powerbuilder Application Execution Error (R0002) Application Terminated. Error: Null Object reference at line 230 in abcd event of object powerbuilder application execution w_base2. When it terminate the application it comes directly to above statement i.e. ls_Value = This.GetItemString(ll_CurrRow, "af_value") I believe the problem is with af_value which I am not unable to see what actually it is fetching, but as per the above error it is encoutering to Null. Could anyone please help me out on this as soon as possible. powerbuilder share|improve this question asked Jun 3 '09 at 10:56 Amit A few questions: What's your PB version? Where's the statement invoked in the window? In a user-defined function? In a window event? Do you test for a valid datawindow object before calling GetItemString? –Vincent Buck Jun 3 '09 at 12:34 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote Your error says line 230 in abcd event of object w_base2, this sounds like a window, but your code says This.GetItemString(). GetItemString is a DataWindow method and can't be used on a window. Check that your code is actually operating on a DataWindow control. If the type of af_value is not a string, then you will get an execution error (although I think it should be a different error?) Basically this error