How can I close another application?

Applies To: C++Builder 1 or higher
Category: Knowledge Base

I can close my own forms by using the Close method. But how can I shutdown a 3rd party application such as Notepad ^®.

 

1.

  Start a new project using File | New Application.

 

2.

  Add a Button. Edit its OnClick event:

 

void __fastcall TForm1::Button1Click(TObject *Sender)

{

    HANDLE handle = FindWindow("Notepad", NULL);

    if(handle)

        SendMessage(handle, WM_SYSCOMMAND, SC_CLOSE, NULL);

}

 

To get the handle of a particular window using FindWindow, you have to know the caption and/or the class of this window.

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