L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT  * pAmplitudes; 
   L_UINT uAmplitudesCount; 
   L_UINT uScale; 
   COLORREF crFill; 
   L_UINT uWaveShearFlags; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 

The WAVESHEARDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalWaveShear 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)".
pAmplitudes Array of integers that represent shear wave values. The valid value of each element in pAmplitudes array is between −1000 and 1000. These values are obtained through the Wave Shear Dialog, or, for image processing; they may be obtained from the LBitmap::GetCurvePoints function. The toolkit will allocate this buffer for the user on function return. You should free this pointer using GlobalFree function unless you called the LDialogBase::EnableAutoProcess.
uAmplitudesCount Number of entries in the pAmplitudes array.
uScale Factor used to decrease the various amplitude values in the pAmplitudes array. Each value in the pAmplitudes array is multiplied by this factor. The real factor value is the uScale value divided by 100. Therefore, to multiply the amplitude values by 1.0, set this parameter to 100.The values range (1-100).
crFill The COLORREF value that specifies the fill color for any exposed areas. You can specify a COLORREF value, such as the return value of the Windows RGB macro, or you can use the PALETTEINDEX macro to specify a palette color.
uWaveShearFlags Flags that indicate how to handle exposed areas, and the direction of the shear wave. You can use a bit wise OR (|) to specify one flag from each group. The following are the flags that indicate how to handle the exposed areas:
  Value Meaning
  FILL_CLR [0x0000] fill exposed areas with the color in crFill.
  FILL_RPT [0x0001] stretch the edges of the image to fill exposed areas.
  FILL_NOCHG [0x0002] do not change or process exposed areas.
  The following are the flags that indicate the direction of the shear wave:
  Value Meaning
  SHR_HORZ [0x0000] apply the shear wave horizontally.
  SHR_VERT [0x0010] apply the shear wave vertically.
uDlgFlags User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:
  Value Meaning
  DLG_WAVESHEAR_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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LEADTOOLS Common Dialog C++ Class Library Help