TForm1 * Form1; Why not use this sentence without new?

zgs0214

TForm1 * Form1; Why can I use this sentence without new? I haven't seen the new statement in the whole project.
And what does extern PACKAGE TForm1 * Form1; in .h mean? Is it a global variable?

xietao405

In Application-> CreateForm

External variable

firemars

In Project1.cpp.

zhongshuan

Menu project-> ViewSource, you can see it by yourself

mad_diablo

The compiler did it for you.

apple_058

Create a new project by default and automatically generate code in Project.cpp
In WINAPI WinMain (HINSTANCE, HINSTANCE, LPSTR, int)
{
        try
        {
                 Application-> Initialize ();
                 Application-> CreateForm (__ classid (TForm1),&Form1);
                 Application-> Run ();
        }
        catch (Exception&exception)
        {
                 Application-> ShowException (&exception);
        }
        catch (...)
        {
                 try
                 {
                         throw Exception ("");
                 }
                 catch (Exception&exception)
                 {
                         Application-> ShowException (&exception);
                 }
        }
        return 0;
}

This sentence Application-> CreateForm (__ classid (TForm1),&Form1);
Created Form1

If your project has more than one Form,
You can make other Forms not new, and new yourself in the code

Menu project-> Options-> Forms
Move the corresponding form from auto-create forms to available forms

Note that you cannot "drag" all forms to the right