LRasterPaint::FillColorReplace

#include "Ltwrappr.h"

L_INT LRasterPaint::FillColorReplace(UserDC, crColor)

HDC UserDC;	/* handle to the device context */
COLORREF crColor;	/* the color to be replaced */

Replaces every pixel using the current fill settings.

Parameter	Description
UserDC	Handle to a device context, such as a screen, to use as a display surface. This parameter can also be NULL. The mapping mode of the device context must be MM_TEXT.
crColor	The COLORREF value that specifies the color to be replaced.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes

Comments

The filling procedure will be carried out using the current fill properties. To determine the current fill properties, call LRasterPaint::GetProperty. To set or change the current fill properties, call LRasterPaint::SetProperty. For more information on the fill properties, refer to the PAINTFILL structure.

Within the PAINTFILL structure, upper and lower tolerance values can be set for the color specified in crColor. For example, if the color passed to this function has an RGB value of 40, 40 , 200, and the lower tolerance and upper tolerance set in the PAINTFILL structure are 10, 10, 10, and 5, 5, 5, respectively, then this function will replace colors from 30, 30, 190 to 45, 45, 205.

The images below show an example of the results of calling LRasterPaint::FillColorReplace.

$image\c3.gif$

$image\c4.gif$

Required DLLs and Libraries

LTPNT

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:	LRasterPaint::SetProperty, LRasterPaint::SetTransformation, LRasterPaint::SetClipRgn, LRasterPaint::SetMetrics, LRasterPaint::SetDCExtents, LRasterPaint::GetProperty, LRasterPaint::GetTransformation, LRasterPaint::GetClipRgn, LRasterPaint::GetDCExtents, LRasterPaint::FillBorder, LRasterPaint::FillSurface, LRasterDialog::DoModalFill, Class Members
Topics:	Filling an Area

Example

L_INT FillColorReplaceTest ( CWnd* pWnd )
{
   LRasterPaint rstp;
   CDC* pDC = pWnd->GetDC() ;
   PAINTSHAPE shape ;
   PAINTFILL fill ;
   RECT rcShape ;
   RECT rcDCExtents ;

   /* Initiate the Paint toolkit */
   if ( SUCCESS != rstp.Initialize ( ) )
   {
      return FAILURE ;
   }

   /* Set the required shape properties */
   shape.nSize  = sizeof ( PAINTSHAPE ) ;
   shape.dwMask = PSF_BORDERWIDTH     |
                               PSF_BORDERCOLOR     |
                               PSF_BACKGROUNDCOLOR ;

   shape.nBorderWidth      = 10 ;
   shape.crBorderColor     = RGB ( 255, 0, 0 ) ;
   shape.crBackgroundColor = RGB ( 255, 0, 0 ) ;

   /* Set the new shape properties  */
   rstp.SetProperty (PAINT_GROUP_SHAPE, &shape ) ;

   /* Set the coordinates with respect to the DC dimensions */
   SetRect ( &rcShape, 10, 10, 60, 60 ) ;

   /* Use the current shape properties to draw an ellipse to the DC (hDC) */
   rstp.DrawShapeEllipse ( pDC->m_hDC, &rcShape ) ;

   SetRect ( &rcShape, 100, 10, 150, 60 ) ;
   rstp.DrawShapeEllipse ( pDC->m_hDC, &rcShape ) ;

   SetRect ( &rcShape, 60, 60, 95, 95 ) ;
   rstp.DrawShapeRectangle ( pDC->m_hDC, &rcShape ) ;

   SetRect ( &rcShape, 10, 100, 60, 150 ) ;
   rstp.DrawShapeEllipse ( pDC->m_hDC, &rcShape ) ;

   SetRect ( &rcShape, 100, 100, 150, 150 ) ;
   rstp.DrawShapeEllipse ( pDC->m_hDC, &rcShape ) ;

   /* Get the destination DC dimensions */
   pWnd->GetClientRect ( &rcDCExtents ) ;

   /* Set the toolkit user DC extents */
   rstp.SetDCExtents ( &rcDCExtents ) ;

   /* Set the required fill properties */
   fill.nSize  = sizeof ( PAINTFILL ) ;
   fill.dwMask = PFF_STYLE ;
   fill.nStyle = PAINT_FILL_STYLE_GRADIENT ;

   /* Set the new fill properties */
   rstp.SetProperty ( PAINT_GROUP_FILL, &fill ) ;

   /* Fill the target area */
   rstp.FillColorReplace ( pDC->m_hDC, RGB ( 255, 0, 0 ) ) ;

   /* Free the paint tools handle */
   rstp.Free ( ) ;

   pWnd->ReleaseDC( pDC ) ;

   return SUCCESS ;
}