Calling functions from a dll

JediPathetique · **Joined:** 18 Sep 2008 22:23 **Posts:** 32

Hello
Here's my question: How can you call functions defined in the main exe file from a loaded DLL?
I want to try creating a dll to add some code to an exe, but I need access to the exe's functions.
Also, would you recommend writing a dll in asm or c?

aluigi · **Posted:** 15 Jan 2009 18:00

when the dll is loaded you have access to anything to which the exe has access, so if this function is at offset 0x00401234 you can define it as the following example:

int (*function)(char *arg1, int arg2, int arg3) = 0x00401234;

and then you can use it normally:

ret = function("blahblah", 123, 456);

JediPathetique · **Joined:** 18 Sep 2008 22:23 **Posts:** 32

Thanks! That looks easy...
So how do you call a function in a dll from the main exe? (In asm)

aluigi · **Posted:** 16 Jan 2009 15:22

in asm I can't help

Luigi Auriemma

Calling functions from a dll