This article introduces a
CExtWndShadow class, which should enable you to easily draw compound shadows anywhere you want.
The class is partially based on the
CExtWndShadow class presented in the freeware version of the Prof-UIS library available here.
How to use it
CExtWndShadow class is simple to use. To add it to your project, please follow the steps below:
- Put its source files (CExtWndShadow.cpp and CExtWndShadow.h) into the proper folder and add their file names to your Visual Studio project.
- Include its header to the appropriate header file. If you plan to use
CExtWndShadow in more than one place, it's reasonable to add it to the stdafx.h file.
CDC & dc,
const CRect & rcWndArea,
UINT nShadowSize = DEF_SHADOW_SIZE,
UINT nBr0 = DEF_BRIGHTNESS_MIN,
UINT nBr1 = DEF_BRIGHTNESS_MAX,
bool bEnablePhotos = true
Draws the shadow.
CDC & dc
Reference to the device context that is used for drawing the shadow.
const CRect & rcWndArea
Reference to the rectangular area in which the shadow is drawn.
Size of the shadow in pixels, which is the same for the width and height.
Minimum brightness of the shadow, which must be in the range 0 to 10.
Maximum brightness of the shadow, which must be in the range 0 to 10.
bEnablePhotos is set to
true, specifies that the shadow algorithm is used at first and then the image is just displayed; otherwise, the shadow algorithm is used every time.
For instance, if you want to draw a shadow for an edit control, use the following code:
rcEdit.InflateRect( 2, 2, 0, 0 );
The ShadowsTest sample project shows how to apply the class to some controls.
Your questions, suggestions, and bug reports may be posted either to the forum below or to the forum at the Prof-UIS website.