Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hpcvlx!bturner
From: bturner@hpcvlx.cv.hp.com (Bill Turner)
Newsgroups: comp.windows.ms
Subject: Re: drawing inside dialog boxes
Message-ID: <106580079@hpcvlx.cv.hp.com>
Date: 20 Dec 89 17:25:25 GMT
References: <33325@ucbvax.BERKELEY.EDU>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 22

> Hi, is it possible to draw inside a dialog box, i.e. I want to draw a 
> blue rectangle inside a dialog box and change its color according to dialog
> commands, but for some reason every time I try to draw it I get nothing,
> here is what I do:
> case WM_INITDIALOG:
>    hDC = GetDC(hDlg);
>    .
>    .
>
>    Rectangle(hDC, x1, y1, x2, y2);

You probably want to handle the WM_PAINT message.  WM_INITDIALOG just says
that all the windows related to the dialog have been created, but they haven't
been displayed yet.

Another possibility is to create a window class that simply draws itself with
a specified color, and use that as a field in the dialog box:

    CONTROL text, id, YOUR_CLASS, style, x, y, w, h

--Bill Turner (bturner@hp-pcd.hp.com)
HP Corvallis Information Systems