typedef struct _ADDNOISEDLGPARAMS 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_UINT uRange; 
   L_UINT uChannel; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 

The ADDNOISEDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalAddNoise 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)".
uRange Percentage of coverage, expressed in tenths of a percent. Valid values are 0 to 1000.
uChannel A variable to be updated with the channel value entered through the dialog. This value represents the channel to which to add the noise. Possible values are:
  Value Meaning
  CHANNEL_MASTER [0] All channels.
  CHANNEL_RED [1] Red channel only.
  CHANNEL_GREEN [2] Green channel only.
  CHANNEL_BLUE [3] Blue channel only.
uDlgFlags User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:
  Value Meaning
  DLG_ADDNOISE_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
pfnHelpCallback Ignored.
pHelpCallBackUserData Ignored.
Help Version 20.0.2019.3.11
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