Extremely Easy

This may sound easy but how do i write information from a textbox into a file.

[parksie]

you'll have a pointer to a char array, in the usual fashion (GetWindowText).

this needs to be #included: <iostream>
also, put using namespace std; at the top of your file, directly under the includes.

to write to a file:

void mywriter(char* file, char* text) {
    ofstream TheFile(file);

    TheFile << text;
}

the ofstream object will be destroyed when it goes out of scope.
PS: iostream is part of the STL, one of the most useful libraries there is, and well worth a look.