Close all window examples after enumerating window handles

#include 
BOOL CALLBACK EnumWindowsProc(HWND hwnd,LPARAM IParam);
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
EnumWindows(EnumWindowsProc,0);//Passes the window handle to the callback function
return 0;
}