ANTIALIASDLGPARAMS

typedef struct _ANTIALIASDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nThreshold; 
   L_UINT uDim; 
   L_UINT uFilter; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} ANTIALIASDLGPARAMS,  * LPANTIALIASDLGPARAMS; 

The ANTIALIASDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalAntiAlias 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)".

nThreshold

Threshold value that indicates which pixels to smooth. The application of the anti-aliasing filter on the image associates a value with each pixel. Only pixels with values above this threshold are smoothed. Range of possible values are:

If the image is: Unsigned Signed
12-bit. 0-4095 -2048 to +2047
16-bit, 48-bit, or 64-bit. 0-65535 -32768 to +32767
Other bits per pixel. 0-255

uDim

Value that indicates the size of the anti-aliasing mask. This value represents the side of a square neighborhood. Possible values range from 2 - 100.

uFilter

Flag that indicates the type of anti-aliasing filter to use. Possible values are:

Value Meaning
ANTIALIAS_1 [0x0000] Anti-alias the bitmap vertically and horizontally.
ANTIALIAS_2 [0x0001] Anti-alias the bitmap in all directions.
ANTIALIAS_3 [0x0002] Anti-alias the bitmap in all directions. The filter used for this option is different from the filter used for the ANTIALIAS_2 option.
ANTIALIAS_DIAG [0x0003] Anti-alias the bitmap diagonally.
ANTIALIAS_HORZ [0x0004] Anti-alias the bitmap horizontally.
ANTIALIAS_VERT [0x0005] Anti-alias the bitmap vertically.

uDlgFlags

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

Value Meaning
DLG_ANTIALIAS_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_ANTIALIAS_SHOW_APPLY [0x00000080] Show the Apply button in the dialog. The dialog will not apply any effect unless the user presses the Apply button.

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Help Version 20.0.2019.9.19
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