Help Version 19.0.2017.10.27
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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. | |
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