Saves the current state of the specified device context (DC) by copying data describing selected objects and graphic modes to a context stack
#include <WinAPIGdiDC.au3>
_WinAPI_SaveDC ( $hDC )
| $hDC | Handle to the DC whose state is to be saved. |
| Success: | The value identifies the saved state. |
| Failure: | 0. |
Search SaveDC in MSDN Library.