HelpWizard Pages Linking Technologies2/en: Unterschied zwischen den Versionen

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To call into a C-function inside a library (eg. shared library / dll)
To call into a C-function inside a library (eg. shared library / dll)
or to implement a computation algorithm in C,
or to implement a computation algorithm in C,
you can define a [[Expecco_API/en#Bridged_C_Elementary_Blocks|C-action]]. You would also use this to call into a C++ framework via C entries annotated as "extern C".
create a new C-action and type in the code.
For example the code:
As a first simple example, create one with a single input pin (named "inPin" with type "String") and type in the code:
execute
execute
printf("hello %s\n", stringValue(inPin));
printf("hello %s\n", stringValue(inPin));


could be connected to any other expecco actions and pass a string via the input pin. Here, an expecco dialog pops up, and the entered string is sent to the C function:
This can now be connected to any other expecco actions and a string passed to it via the input pin. Here, an expecco dialog pops up, and the entered string is sent to the C function:

[[Datei:C HelloWorld Action1.png|100px]]
[[Datei:C HelloWorld Action1.png|300px]]


[[Category: HelpWizard/en]]
[[Category: HelpWizard/en]]

Aktuelle Version vom 19. März 2022, 07:25 Uhr

Linking Technologies: C Language Actions

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To call into a C-function inside a library (eg. shared library / dll) or to implement a computation algorithm in C, you can define a C-action. You would also use this to call into a C++ framework via C entries annotated as "extern C".

As a first simple example, create one with a single input pin (named "inPin" with type "String") and type in the code: 

execute
   printf("hello %s\n", stringValue(inPin));

This can now be connected to any other expecco actions and a string passed to it via the input pin. Here, an expecco dialog pops up, and the entered string is sent to the C function:


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