how to write ControlGetText in C++?

[E1M1]

I cant find way to read text from notepad. I want to write ControlGetText in C++. I got no errors but for some reason messagebox shows me nothing. I've googled but havent found any good example yet.

void CopyDataSend(){
    //HWND hWnd =  FindWindowW(NULL,L"D4672AD6-EA21-4FFD-88F5-4641A2B33E9F");
    HWND hWnd =  FindWindowW(NULL,L"Untitled - Notepad");
    HWND hEdit = FindWindowEx(hWnd,NULL,"Edit",NULL);
    printf("%X %X",hWnd,hEdit);
    char  sData[100];
    GetWindowTextA(hEdit, sData,100);
    MessageBoxA(0,sData,"",0);
}

[funkey]

From MSDN:

GetWindowText cannot retrieve the text of a control in another application

To retrieve the text of a control in another process, send a WM_GETTEXT message directly instead of calling GetWindowText.

[E1M1]

Thanks. Didn't notice it on first read.