How do one call a function by address?

[Thomas Halsvik]

How do one call a function by address?

[parksie]

in what way? if you have vb5 or higher, then you can use the AddressOf operator, which gets the address of a function, in case you need to supply a function pointer to an API function...but I don't know what you need.

[Thomas Halsvik]

I want to be able to call a function by its address.
Something like this:
Call AdressOf(MyFunction), Parameters.

[kb244]

Visual basic can pass any of its objects by reference, but visual basic still cannot use callback functions, it is not capable of using function pointers.

[parksie]

you can't do it as Call AddressOf(func), params

why not func(params)?

AddressOf is for passing to API functions such as CreateDialogBox(...), which requires a pointer to a function which handles the messages for the window. if you have no idea what i'm going on about, have a look at http://msdn.microsoft.com/library , and look at the example programs for windows in C++ - then you'll understand. (in that case you're 1-up on me, 'cuz I don't).

[kb244]

Typically the way a person would be able to use a callback function in visual basic is with the aid of APIs to perform the execution of the location for you, I seen it online somewhere, I'll post it here if i find it, but I know it could have been on the Vb-world.net articles or Tips.

[parksie]

use it for subclassing. (ooh look - within 10 mins!)