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Thereafter, you need to study and understand the following concepts and language constructs to move forward :Ī C++ namespace will be defined in the TLH file for each OCX. wdtlog.tlh, wdtlog.tli, wdtfuncs.tlh, wdtfuncs.tli.ġ.5 This generation of TLH and TLI files is roughly equivalent to the generation of information that you see in the Visual Basic "Object Browser".Ģ. tli files are named after the OCX that you #import, e.g. for a Debug build, these are stored inside the Debug folder).ġ.4 These. These are stored inside the current build configuration folder (e.g. #import "wdtlog.ocx" #import "wdtfuncs.ocx"ġ.1 This is roughly the equivalent of using the "References" facility in Visual Basic.ġ.2 The #import statement will cause the compiler to read the language-independent type information contained inside the Type Libraries (stored inside the ocx files) and then generate the equivalent C++ language constructs for use in the current C++ project.ġ.3 Two special files will be generated for you : a. Start by using the #import statement, e.g. This may seem a little extreme for someone learning C++ but I do get a tad bored writing ‘Hello World’ programs and would rather start developing something that I can use.ġ. Please bear in mind that I'm learning C++ so assume infinite ignorance and an IQ marginally above room temperature (Fahrenheit or Celsius) and I'll let you know when you've got me lost.
#MICROSOFT VISUAL BASIC OCX FILES CODE#
But that's about as much as I understand about it and actually doing it by writing the code is proving a little more onerous.
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The ‘CreateObject’ statement doesn’t seem to have an equivalent in C++ and I suspect I may have to retrieve a ClassID and then get a base interface pointer which I can then use to access the interface that I want. How do I write an equivalent function in C++? It would appear that this is a little more complicated in Visual C++ than in VisualBasic. ocx files namely wdtlog.ocx and wdtfuncs.ocx. The SAPFunctionsOCX.SAPFunctions, SAPLogonCtrl.Connection and SAPLogonCtrl.SAPLogonControl are defined in a couple of.
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Previously, in VB, I would use something like:įunction SAP_Logon(ByRef TableFactor圜ontrol As SAPTableFactor圜trl.SAPTableFactory, _ ByRef FunctionControl As SAPFunctionsOCX.SAPFunctions, _ ByRef LogonControl As SAPLogonCtrl.SAPLogonControl, _ ByRef ConnectionControl As SAPLogonCtrl.Connection) As Boolean LogonControl = CreateObject("SAP.Logoncontrol.1") FunctionControl = CreateObject("SAP.Functions") TableFactor圜ontrol = CreateObject("SAP.TableFactory.1") ' Only open a connection if none is still open If = False Then ' Create a connection object ConnectionControl = LogonControl.NewConnection() ' Logon to a system If (ConnectionControl.Logon(0, False)) = False Then SAPLogon = False Else FunctionControl.Connection = ConnectionControl SAPLogon = True End If Else ' Connection still open SAPLogon = True End If End Function I’m trying to connect to some OCX files that will allow me logon to a SAP system. I’m using Express Visual C++ 2005 but could migrate to 2008 if you all shout at me enough. After years of using Visual Basic (a collective shudder runs through the entire community using this forum) as my primary language I’ve decided to try and teach myself some C++.