L_DlgGradientFilter

#include "l_bitmap.h"

L_INT EXT_FUNCTION L_DlgGradientFilter (hWndOwner, pDlgParams )

HWND hWndOwner;	/* owner of dialog */
LPGRADIENTFILTERDLGPARAMS pDlgParams;	/* pointer to a structure */

Displays the Gradient Filter dialog box, and gets the options for L_SpatialFilterBitmap.

Parameter	Description
hWndOwner	Handle of the window which owns the dialog.
pDlgParams	Pointer to a GRADIENTFILTERDLGPARAMS structure to be updated with the values entered by the user, through the dialog. Set members of this structure, before calling this function, to set the dialog’s initial values.

Returns

SUCCESS_DLG_OK	The "OK" button was pressed, and the dialog exited successfully.
SUCCESS_DLG_CANCEL	The "Cancel" button was pressed, and the dialog exited successfully.
< 1	An error occurred. Refer to Return Codes.

Comments

The GradientFilter dialog can be seen below:

$image\GradientFilter.gif$

Required DLLs and Libraries

LTDLGIMGEFX
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMG
LTKRN

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:	L_DlgInit, L_SpatialFilterBitmap, L_DlgLaplacianFilter, L_DlgSobelFilter, L_DlgPrewittFilter, L_DlgLineSegmentFilter
Topics:	Dialogs: Filtering
	Using Imaging Common Dialog

Example

L_VOID ShowDialog (HWND hWnd, pBITMAPHANDLE pBitmap)
{
   GRADIENTFILTERDLGPARAMS DlgParams ;

   memset ( &DlgParams, 0, sizeof ( GRADIENTFILTERDLGPARAMS ) ) ;

   DlgParams.uStructSize      = sizeof ( GRADIENTFILTERDLGPARAMS ) ;
   DlgParams.pBitmap    = pBitmap ;
   DlgParams.pFilter    = FLT_GRADIENT_NE ;
   DlgParams.uDlgFlags  = DLG_GRADIENTFILTER_SHOW_PREVIEW |
                          DLG_GRADIENTFILTER_SHOW_TOOL_ZOOMLEVEL ;

   L_DlgInit ( 0 ) ;
   L_DlgGradientFilter ( hWnd, &DlgParams ) ;
   L_DlgFree( ) ;
}