C++ DLL to Visual Basic

[JLSSindac]

example i have this code in c++ DLL:

int give = 100;


question: how can i read "give" and get its value "100" using VISUAL BASIC???

please give some sample code... thanks...

[MarkHC]

I think you might want to read some VB and C++ books...

[jkbeast]

Well, you would want to try something like this:

In this order:
--In c++, use the * pointers to get the memory address of the 'give' variable
--Save the memory address into a .txt file
----(Note: ) the memory address may change every time you run the program, so you would need to re-save the memory address again each time you run the program
----(Note: ) aka, just don't get the memory address and assume that it will be constant. Because it won't. Just add a line of code that gets & saves it each time.
--In the VB program, open up that text file so you can read the memory address
--Save the information at that memory address (which is the memory address of the 'give' variable) into a new variable in the VB program.

This should solve your problem in the simplest way possible.

I will not give you code samples, because it is quite simple to do this with both VB and C++. I know both of them rather well, and I can tell you that it is very easy. If you really don't get it, use Google to look up something like "how to read a .txt file in VB" or something. I taught myself both languages almost entirely in this way.

[flameswor10]

You can use an external function so you can grab the variable through VB.net.
This requires you to declare the function using the extern method, and then compiling it as a .DLL file.

If this is not what you required, then you can reverse engineer your own .dll file and read the memory inside of the file after loading it or what ever.
You can also save the variable which your VB.net application will then read. This can be done in a variety of ways, either by registry or a Settings file.

I hope you can manage to do this yourself, If you need help research on.
GetPrivateProfileInt

Regards,
Steven

[JLSSindac]

Thanks for helping me through this problem guys... ^_^

I made it already... In C++ DLL, I simply make a function that logs the variable and its value into a txtfile..
then simply open the txtfile content in VB form then show into the multiline textbox.... GOT IT!!! ^_~

[Thyke]

Define and use it as a lib