#define SW_HIDE 0 #define SW_SHOWNORMAL 1 #define SW_NORMAL 1 #define SW_SHOWMINIMIZED 2 #define SW_SHOWMAXIMIZED 3 #define SW_MAXIMIZE 3 #define SW_SHOWNOACTIVATE 4 #define SW_SHOW 5 #define SW_MINIMIZE 6 #define SW_SHOWMINNOACTIVE 7 #define SW_SHOWNA 8 #define SW_RESTORE 9 #define SW_SHOWDEFAULT 10 #define SW_FORCEMINIMIZE 11 #define SW_MAX 11 DECLARE INTEGER ShowWindow IN Win32API; INTEGER hwnd, INTEGER nCmdShow * lnhwnd is the top-level window you want to change = ShowWindow(lnhwnd, SW_MAXIMIZE) && Maximize the window