LAPLACIANFILTERDLGPARAMS

typedef struct _LAPLACIANFILTERDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   pSPATIALFLT pFilter; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} LAPLACIANFILTERDLGPARAMS,  * LPLAPLACIANFILTERDLGPARAMS; 

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

Members

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. Laplacian filters apply Laplacian line detection. There are three omnidirectional filters and three bi-directional ones. All pixels not on the detected lines are changed to black. Possible values are:

uDlgFlags

User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:

Value Meaning
DLG_LAPLACIANFILTER_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Help Version 20.0.2019.11.25
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