typedef struct _LINESEGMENTFILTERDLGPARAMS
{
L_UINT uStructSize;
pBITMAPHANDLE pBitmap;
L_BOOL bZoomToFit;
pSPATIALFLT pFilter;
L_UINT32 uDlgFlags;
LTCOMMDLGHELPCB pfnHelpCallback;
L_VOID *pHelpCallBackUserData;
} LINESEGMENTFILTERDLGPARAMS, * LPLINESEGMENTFILTERDLGPARAMS;
The LINESEGMENTFILTERDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalLineSegmentFilter 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. The Line Segment filter applies line segment line detection. You can use this filter to find line discontinuities in an image. All pixels not on the detected line segments are changed to black. Choose the appropriate value for horizontal, vertical, left-to-right diagonal, or right-to-left diagonal detection. Possible values are: | |
Value | ||
FLT_LINESEG_HORZ | ||
FLT_LINESEG_VERT | ||
FLT_LINESEG_LTOR | ||
FLT_LINESEG_RTOL | ||
uDlgFlags | User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are: | |
Value | Meaning | |
DLG_LINESEGMENTFILTER_SHOW_CONTEXTHELP | [0x00000002] dialog should contain a context sensitive help icon. | |
pfnHelpCallback | Ignored. | |
pHelpCallBackUserData | Ignored. |
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