Question

I’m trying to make a pop up message box with “Hello World” written on it.
I started off with File>New Project>Visual C++>CLR>Windows Form Application
Then I dragged a button from the toolbox onto the form, double clicked it
entered

private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
{
MessageBox("Hello World");
}

then I compiled…
but I got an error message saying

error C2440: ” : cannot convert from ‘const char [12]’ to ‘System::Windows::Forms::MessageBox’

Answer 1

You need:

MessageBox::Show("Hello World");

(Tested according to your instructions in Visual Studio 2005.)