Effective client area

wkramer — Mon, 18 Dec 2000 04:40:15 GMT

Hello,

I am trying to implement a status bar in a windows application with a single edit control in the client area.

To prevent the status bar from being painted over the edit control I tried to use the following approach:

After creating the Status bar using "CreateStatusWindow" I try to call "GetEffectiveClientRect" to find the rectangular area remaining for the edit control.

The code I use with WM_CREATE looks something like this:

     
    szDescription="flup"C 
    hwndStatbar=CreateStatusWindow(IOR (WS_CHILD,WS_VISIBLE),szDescription, & 
                                 hwnd,IDM_STATUSBAR) 
    call GetEffectiveClientRect(Hwnd,Rect,RectInfo) 
    hwndEdit = CreateWindowEx(0,"edit"C,  & 
                            ""C,      & 
                            IOR(WS_CHILD, IOR(WS_VISIBLE,                & 
                            IOR(WS_HSCROLL, IOR(WS_VSCROLL,              & 
                            IOR(WS_BORDER, IOR(ES_LEFT,                  & 
                            IOR(ES_MULTILINE, IOR(ES_NOHIDESEL,          & 
                            IOR(ES_AUTOHSCROLL, IOR(ES_READONLY,         & 
                                ES_AUTOVSCROLL)))))))))), & 
                            Rect.left, Rect.top, Rect.right, Rect.bottom, & 
                            hwnd, EDITID, ghInstance, NULL)

Declarations of variables and constants:

 
  integer(2), parameter :: IDM_STATUSBAR = 501 
  type(T_RECT) Rect 
  integer(2), dimension(4) :: RectInfo=(/1,IDM_STATUSBAR,0,0/)

However, GetEffectiveClientRect returns the same Rect data as GetClientRect would. So the edit control is painted over the status bar. I have my doubts about the RectInfo array.

Does anyone have an idea? Perhaps I am using a completely wrong approach?

Thanks,

Walter Kramer

Re: Effective client area

Jugoslav_Dujic — Mon, 18 Dec 2000 23:34:41 GMT

Hi Walter,

Frankly, this is the first time I hear about GetEffectiveClientRect. Why not
simply subtract status bar from frame's client rect in order to obtain
desired height of edit control?:

 
CALL GetWindowRect(hWndStatbar,Rect) 
iStatusHeight=Rect%Bottom - Rect%Top 
CALL GetClientRect(hWnd,Rect) 
 
hWndEdit=CreateWindowEx(... 
               Rect%left, Rect%top, Rect%right, Rect%bottom-iStatusHeight 
               ...)

HTH

Jugoslav

Re: Effective client area

wkramer — Tue, 19 Dec 2000 04:11:09 GMT

Hi, Jugoslav

Thank you, this works without any problem.

Walter Kramer

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