How to reference main form ??? simple

[BrianB]

I have a simple question. Say I have a c++ .net managed project. I have my main form class Form1 , and I create another class called test1. How do I reference the main form from it? I want to be able to call functions that reside in the main form. A simple code example would be VERY aqppreciated.

Thanks

[lloydy]

I'm not sure why you couldn't get access to it another way (as all comes from the main form), but if you need to do it, I've attached a sample to show you how.

Let me know how you go


Also, be careful when accessing forms from other threads. All activites on a form must be on the thread that the form was created on. You may need to marshal.

Hooroo

[BrianB]

Thanks!

However I want to be able to access the functions on Form1 :/ Any example of that by chance?

thanks

[Idmir]

are you needing data from the main form or just the functions?

[lloydy]

BrianB,

The function "UpdateLabel" is a function in Form1. You can access any function in Form1 in the same way. I'm not sure I understand what it is you want to do.

[Vodzurk]

Quick guess... am in a bit of a rush...

within form2, summat like...

frmForm1 * my_Form1;
my_Form1 = dynamic_cast<frmForm1 *>(this->parent);

[BrianB]

Please disregard last post .

Lloydy : I want to be able to return data form the function,. So from the class i can call a function in the main form, and get the return value or pass arguments by reference to get that data.

also, how can i do this same thing form an unmanaged class to form1?

how would i pass multiple args?

thank you much

[saurabh_helloaish]

BrainB,

u need to just declare a public variable in the nested class(or the class you r referring). This variable should be of type Form1, something like this

Form1* objForm1

Now in Form1.h load event or constructor write following line
ClassName* objClass;
objClass->objForm1 = this;

By doing this you can access all the variables of form1 and can call any function of
form1.h

thanks
saurabh