LRasterPaint::FillSurface

#include "Ltwrappr.h"

L_INT LRasterPaint::FillSurface(UserDC, pptPoint)

HDC UserDC;	/* handle to the device context */
LPPOINT pptPoint;	/* pointer to a POINT structure */

Fills an area, starting at a specified point and continuing in all directions, that contains a specified color and some tolerance.

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.
pptPoint	Pointer to a POINT structure that the toolkit will use as a starting point to fill the area. This color present at this point will specify the surface color.

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 border color specified in crBorderColor. For example, if the border 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 recognize colors from 30, 30, 190 to 45, 45, 205 as the border color.

If UserDC is not NULL, the toolkit will paint on the specified device context. If UserDC is NULL, the toolkit will not paint on a device context.

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

$image\g7.gif$

$image\g8.gif$

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::FillColorReplace, LRasterPaint::FillBorder, LRasterDialog::DoModalFill, Class Members
Topics:	Filling an Area

Example

L_INT FillSurfaceTest ( CWnd* pWnd )
{
   LRasterPaint rstp;
   CDC* pDC = pWnd->GetDC( ) ;
   PAINTSHAPE shape ;
   RECT rcShape ;
   RECT rcDCExtents ;
   POINT ptFill ;

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

   /* Get the current shape properties */
   rstp.GetProperty (PAINT_GROUP_SHAPE, &shape ) ;

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

   shape.nBorderWidth  = 8 ;
   shape.nBorderStyle  = PAINT_SHAPE_BORDER_STYLE_DOT ;
   shape.crBorderColor = RGB ( 255, 0, 255 ) ;
   shape.nBorderEndCap = PAINT_SHAPE_BORDER_ENDCAP_ROUND ;
   shape.crBackgroundColor = RGB ( 255, 255, 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, 210, 210 ) ;

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

   /* Set the fill start point */
   ptFill.x = 100 ;
   ptFill.y = 100 ;

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

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

   /* Fill the target area */
   rstp.FillSurface ( pDC->m_hDC, &ptFill ) ;

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

   pWnd->ReleaseDC( pDC ) ;

   return SUCCESS ;
}