Variant arrays with an element type of varByte are the preferred method of passing binary data between Automation controllers and servers. You can pass interface-type parameters to Automation methods. FileSaveAs ( 'c:\temp\test.txt', 3 ) end Insert ( 'This is the second line' #13 ) Word. Insert ( 'This is the first line' #13 ) Word. Var Word : Variant begin Word := CreateOleObject ( 'Word.Basic' ) Word. The CreateOleObject function (defined in ComObj) returns an IDispatch reference to an Automation object and is assignment-compatible with the variant Word: The following example illustrates Automation method calls. The validity of these calls is not checked at compile time. No other directives are allowed in dispatch-interface property declarations.Īutomation object method calls are bound at run time and require no previous method declarations. Array properties can be declared as default. To specify a dispatch ID for a property, include the dispid directive in its declaration, followed by an integer constant specifying an already used ID causes an error. They can be declared as readonly or writeonly. Properties of a dispatch interface do not include access specifiers. In other words, they must be Byte, Currency, Real, Double, Longint, Integer, Single, Smallint, AnsiString, WideString, TDateTime, Variant, OleVariant, WordBool, or any interface type. Parameter and result types must be automatable. To specify an Automation dispatch ID for a method, include the dispid directive in its declaration, followed by an integer constant specifying an already used ID causes an error.Ī method declared in a dispatch interface cannot contain directives other than dispid. Methods of a dispatch interface are prototypes for calls to the Invoke method of the underlying IDispatch implementation. Additionally, you will be taking risks with the stability of your overall solution.Type IStringsDisp = dispinterface property ControlDefault : OleVariant dispid 0 default function Count : Integer dispid 1 property Item : OleVariant dispid 2 procedure Remove ( Index : Integer ) dispid 3 procedure Clear dispid 4 function Add ( Item : OleVariant ) : Integer dispid 5 function _NewEnum : IUnknown dispid - 4 end Dispatch interface methods If you use an Office application from a server-side solution, the application will lack many of the necessary capabilities to run successfully.
EASYWEATHER IDISPATCH ERROR # WINDOWS 10 CODE
Or, you should try to find alternatives that allow at least part of the code to run client-side. If you are building a solution that runs in a server-side context, you should try to use components that have been made safe for unattended execution.
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment. The Considerations for server-side Automation of Office article states the following: It is also not clear where and when you are trying to automate Outlook. Note, you need to have Outlook installed before running your code. Looks like Outlook can't be found on the system. > 91 IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.IID_IDispatch) > 114 return (_GetGoodDispatch(IDispatch, clsctx), userName)ġ16 def _GetDescInvokeType(entry, invoke_type):Ĩ9 IDispatch = nnect(IDispatch) > 95 dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)ĩ6 return _WrapDispatch(dispatch, userName, resultCLSID, typeinfo, clsctx=clsctx)Ĭ:\users\dipf5\appdata\local\programs\python\python37\lib\site-packages\win32com\client\dynamic.py in _GetGoodDispatchAndUserName(IDispatch, userName, clsctx) > 1 outlook = ("Outlook.Application").GetNamespace("MAPI")Ĭ:\users\dipf5\appdata\local\programs\python\python37\lib\site-packages\win32com\client\_init_.py in Dispatch(dispatch, userName, resultCLSID, typeinfo, UnicodeToString, clsctx)ĩ4 assert UnicodeToString is None, "this is deprecated and will go away" > 89 IDispatch = nnect(IDispatch)Ĭom_error: (-2147221005, 'Invalid class string', None, None)ĭuring handling of the above exception, another exception occurred: The complete Traceback is as follows: -Ĭom_error Traceback (most recent call last)Ĭ:\users\dipf5\appdata\local\programs\python\python37\lib\site-packages\win32com\client\dynamic.py in _GetGoodDispatch(IDispatch, clsctx) I am trying to connect to Outlook with Python but the following line throws the com_error outlook = ("Outlook.Application").GetNamespace("MAPI")