Symbian3/SDK/Source/GUID-C3FC557E-72B4-5714-AE21-930F421204D6.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Tue, 20 Jul 2010 12:00:49 +0100
changeset 13 48780e181b38
parent 0 89d6a7a84779
permissions -rw-r--r--
Week 28 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 1897 and Bug 1522.

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<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept xml:lang="en" id="GUID-C3FC557E-72B4-5714-AE21-930F421204D6"><title>Clearing a Rectangle</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This topic shows you how to use <codeph>CBitmapContext::Clear()</codeph> to clear a rectangle to the current brush color. </p> <codeblock id="GUID-616556DA-B502-51D7-A08E-BC84022F2D3B" xml:space="preserve">TRect largeBox(0,0,100,100);
TRect clearBox(20,20,40,40);
    
// draw a cross-hatched box
gc.SetBrushColor(KRgbDarkGray);
gc.SetBrushStyle(CGraphicsContext::ESquareCrossHatchBrush);
gc.DrawRect(largeBox);
    
// clear a small rectangle
gc.SetBrushColor(KRgbGray); // change the brush color
gc.Clear(clearBox);   // clear to brush color</codeblock> <p> <b>Note</b>: When clearing a rectangle, the brush style is ignored, even if it is <codeph>TBrushStyle::ENullBrush</codeph>. </p> </conbody><related-links><link href="GUID-AFE8A9CC-E026-5396-8E0C-616338B5F5C3.dita"><linktext>BitGDI Tutorials</linktext> </link> <link href="GUID-EAAD1719-C02C-5705-A5C3-993E36441BE6.dita"><linktext>BitGDI Component</linktext> </link> </related-links></concept>