| **Navigation:**  [[introduction.htm|Language Reference]] > [[chapter runtime properties.htm|App C - PROP: Runtime Properties]] > Complete Property List >====== PROP:ClientHandle ====== | [[prop choicefeq.htm|{{btn_prev_n.gif|Previous page}}]][[chapter runtime properties.htm|{{btn_home_n.gif|Return to chapter overview}}]][[prop clientheight.htm|{{btn_next_n.gif|Next page}}]] |
|  ||

WINDOW property which returns the client window handle (the area of the window that contains the controls) for use with low-level Windows API calls that require it. (READ-ONLY)

**Example:**

| **WinView WINDOW('View'),AT(0,0,320,200),MDI,MAX,HVSCROLL** |
| **        END** |
| **MessageText    CSTRING('You cannot exit the program from this window ')** |
| **MessageCaption CSTRING('No EVENT:CloseDown Allowed ')** |
| **TextAddr       LONG** |
| **CaptionAddr    LONG** |
| **RetVal         SHORT** |
| ** CODE** |
| ** OPEN(WinView)** |
| ** ACCEPT** |
| **  CASE EVENT()** |
| **  OF EVENT:CloseDown** |
| **   TextAddr = ADDRESS(MessageText)** |
| **   CaptionAddr = ADDRESS(MessageCaption)** |
| **   RetVal = MessageBox(WinView{****PROP:ClientHandle****},TextAddr,CaptionAddr,MB_OK) ** |
| **                    !Windows API call using a window handle** |
| **   CYCLE            !Disallow program closedown from this window** |
| **  END** |
| ** END** |
| **!**************************************************** |
| **  hDC = GetDC(Window{****PROP:ClientHandle****}) ** |
| **  DO DrawStuff** |
| **  ReleaseDC(Window{****PROP:ClientHandle****}, hDC)** |

**See Also:** [[prop handle.htm|PROP:Handle]]