Assuming I can't change the declaration of DoArray (it is part of a third party library), how do I write a function returning an array of char compatible with DoArray's param? The straightforward "function ReturnAChar: array of Char;" results in an "Identifier ...
type TAnsiCharArray = array of PAnsiChar; function ListBuckets(const PrivateKEY: PAnsiChar; const PublicKEY: PAnsiChar; out ArrayBuckets: TAnsiCharArray; out MensagemErro: PAnsiChar): Boolean; stdcall; external 'Test.dll'; function ListBucketsDelphi(const PrivateKEY: string; const ...
- There is a workaround now for returning static arrays from functions. Because this is not possible in C++, a pointer to the first element of the array is returned and used as argument for "memcpy". In cases, where the static array is locally constructed inside of a function, a helping...
The biggest disadvantage of using the implicit import of DLLs technique is the fact that you’ll get an error message when trying to load an application that requires a DLL, and that DLL cannot be found. In that situation, the application will be unable to start, so the error message is ...
('/records/multiple')] function GetMultipleRecords: TArray<TPersonRec>; { actions returning objects } [MVCPath('/objects/single')] function GetSingleObject: TPerson; [MVCPath('/objects/multiple')] function GetMultipleObjects: TObjectList<TPerson>; { actions returning datasets } [MVCPath('/...
If the array is passed by value, it is responsibility of the called function to preserve the array. When a function needs to change the values of one or more elements of an array passed by value, normally it creates a local copy and works on the copy. The compiler creates ...
If the objects are not compatible for assignment, declaring a type can be a way to overcome the issue. Alternatively, using a generic array allows the use of generic container classes such asTList<T>. This can be beneficial as compared to returning values of typeTArray<T>, which may not...
Here's an example call to a method expecting two integer parameters (returning an IAsyncCall): TAsyncCalls.Invoke(AsyncMethod, i, Random(500)); functionTAsyncCallsForm.AsyncMethod(taskNr, sleepTime: integer): integer; begin result := sleepTime; ...
type so I had to cheat and wrap my pointer into an integer. (Which is a practice that will cause ugly crashes after we get 64-bit Delphi compiler but … c'est la vie.) We can also use methods with variable number of parameters (array of const – as in the built-in Format ...
casted to a basic variant type (integer, string, array) when returning a value, like it was with PythonAtom. v1 := VarPythonCreate(1); v2 := VarPythonCreate(2); v1 + v2 will return a new variant that will hold the a Python object that is ...