GRADIENTFILTERDLGPARAMS

typedef struct _GRADIENTFILTERDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   pSPATIALFLT pFilter; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} GRADIENTFILTERDLGPARAMS,  * LPGRADIENTFILTERDLGPARAMS;

The GRADIENTFILTERDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalGradientFilter function. After the user closes the dialog box, this structure is updated with information about the user's selections.

Member Description
uStructSize Size of this structure, in bytes. Use the sizeof operator to calculate this value.
pBitmap Ignored.
bZoomToFit Flag that indicates the initial zoom level for previewing the image. Possible values are:
  Value Meaning
  TRUE Set the initial zoom level to "Zoom to fit".
  FALSE Set the initial zoom level to "Normal (1:1)".

 

pFilter Address of a variable to be updated with the spatial filter selected in the dialog. Gradient filters detect edges. All pixels not on the detected edges are changed to black. Choose the appropriate value for the direction of the effect. Possible values are:
  Value
  FLT_GRADIENT_N
  FLT_GRADIENT_NE
  FLT_GRADIENT_E
  FLT_GRADIENT_SE
  FLT_GRADIENT_S
  FLT_GRADIENT_SW
  FLT_GRADIENT_W
  FLT_GRADIENT_NW
uDlgFlags User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:
  Value Meaning
  DLG_GRADIENTFILTER_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
pfnHelpCallback Ignored.
pHelpCallBackUserData Ignored.
Help Version 19.0.2017.10.27
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