Form calls Form

Question

TwoFormsTest3 Project
I have a Windows CppCLR_Winforms App built with VS2019 running in Win10.
frmMain , the opening form has a button whose click event attempts to open
MyForm1. frmMain has an #include "MyForm1.h" statement.
C++/CLI support for v142 build tools has been installed.
In frmMain button click event I try the following unsuccessful code attempts

// ========= I think fmrMain needs some code to access MyForm1
Statements I've tried
MyForm1^ MyForm1 = gcnew MyForm1(); // Says E0020 MyForm1 is undefined
MyForm1 form= new MyForm1(); // Fails also
MyForm1.TopLevel = false;// Fails also
MyForm1.Show(); // Fails also
=============================================== /

So how do I make MyForm1 visible to frmMain ?

TIA
Bob

Answer 1

Hi srfpala,
First, create C++ winform project by the an earwig's answer.
Then, add a new form(MyForm1).
Right click the project name->Add->New Item->UI->Windows Form->Add.
Finally, use the following code to call MyForm1.

private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {  
	MyForm1^ f1 = gcnew MyForm1();  
	f1->ShowDialog();  
}  

Test result:

Best Regards,
Daniel Zhang

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Answer 2

HI,

I have a program that when clicking the button on form1, it closes this form1 and opens form2. Now how do I put a button on form2 to close that form2 and reopen form1. I'm not able to do this. I've tried everything.

Thanks

Answer 3

Daniel's answer above doesn't work for me. Calling a form is fine. I want to close the open form and open another one that is hidden.

Tks