Public Overloads Sub DrawEffect( _
   ByVal srcHdc As IntPtr, _
   ByVal srcPoint As Point, _
   ByVal destHdc As IntPtr, _
   ByVal destRect As Rectangle, _
   ByVal effectType As SpecialEffectsType, _
   ByVal grain As Integer, _
   ByVal delay As Integer, _
   ByVal speed As Integer, _
   ByVal cycles As Integer, _
   ByVal pass As Integer, _
   ByVal maxPass As Integer, _
   ByVal transparency As Boolean, _
   ByVal transparentColor As Color, _
   ByVal wandWidth As Integer, _
   ByVal wandColor As Color, _
   ByVal rasterOperation As Integer, _
   ByVal progressCallback As SpecialEffectsProgress _
) 

Visual Basic (Usage)

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Dim instance As SpecialEffectsProcessor Dim srcHdc As IntPtr Dim srcPoint As Point Dim destHdc As IntPtr Dim destRect As Rectangle Dim effectType As SpecialEffectsType Dim grain As Integer Dim delay As Integer Dim speed As Integer Dim cycles As Integer Dim pass As Integer Dim maxPass As Integer Dim transparency As Boolean Dim transparentColor As Color Dim wandWidth As Integer Dim wandColor As Color Dim rasterOperation As Integer Dim progressCallback As SpecialEffectsProgress   instance.DrawEffect(srcHdc, srcPoint, destHdc, destRect, effectType, grain, delay, speed, cycles, pass, maxPass, transparency, transparentColor, wandWidth, wandColor, rasterOperation, progressCallback)

public void DrawEffect( 
   IntPtr srcHdc,
   Point srcPoint,
   IntPtr destHdc,
   Rectangle destRect,
   SpecialEffectsType effectType,
   int grain,
   int delay,
   int speed,
   int cycles,
   int pass,
   int maxPass,
   bool transparency,
   Color transparentColor,
   int wandWidth,
   Color wandColor,
   int rasterOperation,
   SpecialEffectsProgress progressCallback
)

public:
void DrawEffect( 
   IntPtr srcHdc,
   Point srcPoint,
   IntPtr destHdc,
   Rectangle destRect,
   SpecialEffectsType effectType,
   int grain,
   int delay,
   int speed,
   int cycles,
   int pass,
   int maxPass,
   bool transparency,
   Color transparentColor,
   int wandWidth,
   Color wandColor,
   int rasterOperation,
   SpecialEffectsProgress^ progressCallback
) 

Parameters

srcHdc

Handle to the source device context.

srcPoint

Point object of the origin of the source rectangle.

destHdc

Handle to the destination device context.

destRect

Rectangle to be used as the display destination rectangle.

effectType

Effect to apply when painting. For valid values, refer to SpecialEffectsType.

grain

Graining size. This is the smallest size (pixel width or height) to be updated when painting an effect. Using a small grain makes the painting smoother, but takes longer to paint. Using a large grain makes the painting more coarse, but paints faster. If the effectType parameter is from the Wave class this represents the duration or height of the wave. Valid values are 1 to 256.

delay

Delay between graining steps, in milliseconds.

speed

Speed of the wave. Valid values are 1 to 256. This parameter is valid only if the effectType parameter is from the Wave class.

cycles

Number of cycles or repetitions used to draw the wave. This parameter is valid only if the effectType parameter is from the Wave class.

pass

Pass number when using a pattern brush. Use 1 for painting in one pass.

maxPass

Maximum passes for a pattern brush. Use 1 for painting in one pass.

transparency

True to implement transparency by not painting pixels of the color specified in the transparentColor parameter; False if transparency is not implemented.

transparentColor

value that specifies the transparent color.

wandWidth

Wand width, in pixels.

wandColor

Value that specifies the wand color.

rasterOperation

Windows ROP code for display. This parameter takes the same codes as the Windows BitBlt method. For ordinary painting, use SRCCOPY.

progressCallback

Callback method that will be called when the Effect is started to determine the status for the effect.

This example shows how to use DrawEffect with wave effect .

Visual Basic

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Public Sub DrawEffect(ByVal g As Graphics, ByVal destRect As Rectangle)     RasterCodecs.Startup()     Dim codecs As RasterCodecs = New RasterCodecs()     Dim rasterImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp")     Dim image As Image = rasterImage.ConvertToGdiPlusImage()     Dim srcGraphics As Graphics = Graphics.FromImage(image)     Dim processor As SpecialEffectsProcessor = New SpecialEffectsProcessor()     processor.DrawEffect(srcGraphics, New Point(0, 0), g, destRect, SpecialEffectsType.WaveTB, 1, 10, 20, 1, 3, 3, False, Color.Black, 3, Color.Red, RasterPaintProperties.SourceCopy, Nothing)     srcGraphics.Dispose()     image.Dispose()     rasterImage.Dispose()     RasterCodecs.Shutdown() End Sub

C#

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public void DrawEffect(Graphics g, Rectangle destRect)  {     RasterCodecs.Startup();     RasterCodecs codecs = new RasterCodecs();     RasterImage rasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp");     Image image = rasterImage.ConvertToGdiPlusImage();     Graphics srcGraphics = Graphics.FromImage(image);       SpecialEffectsProcessor processor = new SpecialEffectsProcessor();       processor.DrawEffect(srcGraphics,                          new Point(0, 0),                          g,                          destRect,                          SpecialEffectsType.WaveTB,                          1,                /* graining size */                          10,               /* delay between graining steps */                          20,               /* speed of the wave */                          1,                /* number of cycles or repetitions */                          3,                /* step number for the pattern brush */                          3,                /* maximum steps for the pattern brush */                          false,            /* do not use transparency */                          Color.Black,      /* transparent color, black */                          3,                /* wand width */                          Color.Red,        /* wand color, red */                          RasterPaintProperties.SourceCopy,                          null);       srcGraphics.Dispose();     image.Dispose();     rasterImage.Dispose();       RasterCodecs.Shutdown();  }

Use this method as a replacement for the Windows BitBlt API method when you want a special painting effect.

Use the grain and delay parameters to control the speed of the display. The grain parameter controls the size of the painting increment, and delay controls the time between increments.

The wand is a solid color bar that moves during an effect. Small grain sizes produce the best wand effects. Many of the effects listed in SpecialEffectsType can have a wand.

Use the pass and maxPass parameters to paint the image in more than one pass. For example, if you want a 3-pass paint, use maxPass of 3 and paint 3 times, once with pass = 1, once with pass = 2, and once with pass = 3.

Multipass painting for the PushClass is disabled.

If the effectType parameter is from the Twirl class, White Turnover class, Turnover class, Replace class, Laser class, Fade Normal class, Fade Black and White class, Fade Color class or Wave Class, the pass and maxPass parameters have no effect.

If the effectType parameter is from the Fade Normal class, Fade Black and White class or Fade Color class, the grain parameter has no effect. However, if the effectType parameter is from the Wave class, the grain parameter contains the wave size.

If the effectType parameter is from the White Turnover class, the Turnover class or the Replace class, the wandWidth and wandColor parameters have no effect. However, if the effectType parameter is from the Fade Color class, the wandColor parameter contains the bitmap color level.

The speed and cycles parameters have effect only if the effectType parameter is from the Wave class.

For general information, refer to Implementing Special Effects .

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Reference