when we press the button ,then appear like this

private: System::Void textBox1_TextChanged(System::Object^  sender, System::EventArgs^  e) {
}

after that if we want to appear the caracter like "A" , after press the button , how is the program for that??
thank you before

You'll have to show more code than that and explain a little better. That code first of all has nothing to do with clicking a button, and second of all doesn't do anything.

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