Powerbuilder Application Error R0021

for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > Application execution error (R0021) calling Global External Function frm PB 11.5 Want to Advertise Here? Solved Application execution error (R0021) calling Global External Function frm PB 11.5 Posted on 2010-11-24 Editors IDEs 1 Verified Solution 8 Comments 3,220 Views Last Modified: 2013-12-26 I am using PB 11.5 and trying to call external function GetUsernameW Tried declararing the function as Public Function boolean GetUsernameW( ref string userID, ref ulong len ) library "ADVAPI32.DLL" Alias for "GetUsernameW" Then called the function like the one below. string ls_temp ulong lul_value boolean lb_rc lul_value = 255 ls_temp = Space( 255 ) lb_rc = GetUserNameW( ls_temp, lul_value ) I get Application execution error (R0021). Enclosing the screen shot. Tried for GetUsernameA as well. The other external functions example GetModuleFileName in Kernel32.dll doesn't give any such errors. Please suggest what could be wrong. error.JPG 0 Question by:adithya Facebook Twitter LinkedIn Google LVL 12 Best Solution byHarish Varghese Hello Adithya, Function name in Alias For clause is case-sensitive. GetUserNameW should have G, U, N and W letters capital. Please change below code Public Function boolean GetUsernameW( ref string Go to Solution 8 Comments LVL 2 Overall: Level 2 Editors IDEs 2 Message Expert Comment by:kmanoharnaik2010-11-24 Hi, Canyou clear all the values in watch window when you try to debug? i could not see what are the variables exist in watch window please let me know if you have problem. thanks msn 0 Message Author Comment by:adithya2010-11-24 Hi.. Am enclosing another screen shot for variable values during debug. I have not added anything in watch window. Is it anything to do with the path where dll is present? error.JPG 0 LVL 2 Overall: Level 2 Editors IDEs 2 Message Expert Comment by:kmanoharnaik2010-11-24 Hi, where did u place the dlls??? can you please place it in C:\WINDOWS\system32 regards msn 0 Message Author Comment by:adithya2010-11-24 The dl

the same time. R0001 Divide by zero R0002 Null object reference or Error failure loading dynamic library. A referenced object is not valid (not created). Can also occur when the object in question cannot be found in the EXE or in one of the PBDs/DLLs. R0002 Null object reference R0003 Array boundary exceeded. The value of the index does not exists in the array. R0004 Enumerated value is out of range for function R0005 Negative value encountered. Some PowerBuilder functions https://www.experts-exchange.com/questions/26635971/Application-execution-error-R0021-calling-Global-External-Function-frm-PB-11-5.html do not allow to have negative values passed to them. R0006 Invalid datawindow row/column specified. Check for row 0 or rownumbers higher than the rowcount or for invalid column names. R0007 Database interface does not support remote procedure calls, or Error unresolvabled external