Getting width and height from CDC

Carsten Schwartz -- csn@dhi.dk
Friday, November 08, 1996


Environment: Windows NT 4.0, VC++ 4.2b

How do i get the width and the height of the viewport
of a  CDC in pixels without calling GetParent, GetClientRect
and other CWnd functions ?

Normally I would used code like this

CWnd    * container;
RECT      client_rect;
int            width, height;

container    = (pDC->GetWindow())->GetParent();
container->GetClientRect(&client_rect);
width  = (client_rect.right - client_rect.left);
height = (client_rect.bottom - client_rect.top);
 
and GetViewportExt only gives mee 1 X 1 (cx X cy)....
_____________________________________________________
Carsten Schwartz            Email : csn@dhi.dk
Software Engineer           www   : http://www.dhi.dk
Danish Hydraulic Institute  Tel.  : +45 45 76 95 55
Agern Alle 5                Fax.  : +45 45 76 25 67
2970 Horsholm
Denmark

And they shall know no fear...
_____________________________________________________

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Alexander Grigoriev -- alegr@aha.ru
Saturday, November 09, 1996

Window viewport does not mean "visible area size". Viewport extents to
window extents ratio just defines a coefficient to translate logical
coordinates to physical. Use GetClipBox() to obtain a rectangle to draw in.

----------
> From: Carsten Schwartz 
> To: mfc-l@netcom.com
> Subject: Getting width and height from CDC
> Date: 8 ОПСВТС 1996 З. 10:07
> 
> 
> Environment: Windows NT 4.0, VC++ 4.2b
> 
> How do i get the width and the height of the viewport
> of a  CDC in pixels without calling GetParent, GetClientRect
> and other CWnd functions ?
> 
> Normally I would used code like this
> 
> CWnd    * container;
> RECT      client_rect;
> int            width, height;
> 
> container    = (pDC->GetWindow())->GetParent();
> container->GetClientRect(&client_rect);
> width  = (client_rect.right - client_rect.left);
> height = (client_rect.bottom - client_rect.top);
>  
> and GetViewportExt only gives mee 1 X 1 (cx X cy)....

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