C++ Помогите новичку

Как создать вторую кнопку и при нажатие на первую кнопку записал текст "привет" на вторую кнопку?

Dev-Cpp

#include
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
char szClassName[ ] = "WindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd;

MSG messages;
WNDCLASSEX wincl;

wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure;
wincl.style = CS_DBLCLKS;
wincl.cbSize = sizeof (WNDCLASSEX);
wincl.hIcon = LoadIcon (NULL, IDI_QUESTION);
wincl.hIconSm = LoadIcon (NULL, IDI_EXCLAMATION );
wincl.hCursor = LoadCursor (NULL, IDC_CROSS);
wincl.lpszMenuName = NULL;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
if (!RegisterClassEx (&wincl))
return 0;
hwnd = CreateWindowEx (
0,
szClassName,
"Windows App",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
544,
375,
HWND_DESKTOP,
NULL,
hThisInstance,
NULL
);

HWND button = CreateWindow(
"BUTTON",
"Class Options",
WS_VISIBLE | WS_CHILD,
5,
60,
105,
20,
hwnd,
(HMENU)100,
(HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
NULL);
ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hwnd);
while (GetMessage (&messages, NULL, 0, 0))
{
TranslateMessage(&messages);
DispatchMessage(&messages);
}
return messages.wParam;
}
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_DESTROY:
PostQuitMessage (0);
break;
default:

return DefWindowProc (hwnd, message, wParam, lParam);
}

return 0;
}