delegates
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delegates [2018/02/20 19:40] – wolfgangriedmann | delegates [2018/07/11 09:35] – [Why Delegates] wolfgangriedmann | ||
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The only real use of function pointers in the VO language is the interface to Windows API functions or other DLL calls. | The only real use of function pointers in the VO language is the interface to Windows API functions or other DLL calls. | ||
- | Since every pointer use can lead to serious problems when wrongly used, the .NET languages define another concept: the delegates. | + | Since every pointer use can lead to serious problems when wrongly used, the .NET languages define another concept: the delegates. And therefore you should also use delegates when you need to dynamically call functions. |
==== What is a Delegate ==== | ==== What is a Delegate ==== | ||
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Of course you can omit also the Invoke() call - the compiler will add it for you: | Of course you can omit also the Invoke() call - the compiler will add it for you: | ||
< | < | ||
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+ | Delegates can be also used in other cases: when you need to call a function in a dynamically loaded DLL. In VO we used the PCall() pseudo-function, | ||
+ | For a sample please look here: [[vo_to_net: | ||
Please look also at this message in the X# forum by Chris Pyrgas: | Please look also at this message in the X# forum by Chris Pyrgas: |
delegates.txt · Last modified: 2018/07/11 09:36 by wolfgangriedmann