1. 窗体函数
BOOL WINAPI EnumWindows( _In_ WNDENUMPROC lpEnumFunc, _In_ LPARAM lParam );
BOOL WINAPI EnumChildWindows( _In_opt_ HWND hWndParent, _In_ WNDENUMPROC lpEnumFunc, _In_ LPARAM lParam );
HWND WINAPI FindWindow( _In_opt_ LPCTSTR lpClassName, _In_opt_ LPCTSTR lpWindowName );
BOOL WINAPI GetClientRect( _In_ HWND hWnd, _Out_ LPRECT lpRect );
BOOL WINAPI GetWindowRect( _In_ HWND hWnd, _Out_ LPRECT lpRect );
int WINAPI GetWindowText( _In_ HWND hWnd, _Out_ LPTSTR lpString, _In_ int nMaxCount );