#include "l_bitmap.h"

L_LTDLG_API L_INT L_DlgFreeHandWave(hWndOwner, pDlgParams)

Displays the Free Hand Wave dialog box, and gets the options for L_FreeHandWaveBitmap.


L_HWND hWndOwner

Handle of the window which owns the dialog.


Pointer to a FREEHANDWAVEDLGPARAMS structure to be updated with the values entered by the user, through the dialog. Set members of this structure, before calling this function, to set the dialogs initial values.


The Free Hand Wave dialog.

This dialog has the following fields:

Curve Mode Drop-down list box:

Use this to select the curve mode to use. There are two choices:

Curve image\Control_Curve_Mode_Curve.gif: distorts the image using a curve wave.

Linear image\Control_Curve_Mode_Linear.gif: distorts the image using a linear wave.

Flip Buttons:

Use these buttons to flip the curve if the Curve Mode is either Curve or Linear. The following options are available:

Both image\Control_Curve_Flip_Both.gif: Flip the curve vertically and horizontally.

Vertically image\Control_Curve_Flip_Vertically.gif: Flip the curve vertically.

Horizontally image\Control_Curve_Flip_Horizontal.gif: Flip the curve horizontally.

Reset Button:

Use the Reset button to set the curve to its default values.

Load Button:

Use the Load button to load an "*.lhw" file that contains Hand Wave curve settings and the angle setting, using the Load dialog. The loaded file will set new curve and angle settings.


Loading curve and angle settings will overwrite all current curve and angle settings!

Save Button:

Use the Save button to save the curve and angle settings into an "*.lhw" file. This allows you set the same curve and angle settings for other images by re-loading the file.


Value Meaning
SUCCESS_DLG_OK The "OK" button was pressed, and the dialog exited successfully.
SUCCESS_DLG_CANCEL The "Cancel" button was pressed, and the dialog exited successfully.
< 1 An error occurred. Refer to Return Codes.

Required DLLs and Libraries

See Also




L_INT DLGFreeHandWaveExample(HWND hWnd,pBITMAPHANDLE pBitmap) 
   L_INT nRet; 
   memset ( &DlgParams, 0, sizeof ( FREEHANDWAVEDLGPARAMS ) ) ; 
   DlgParams.uStructSize         = sizeof ( FREEHANDWAVEDLGPARAMS ) ; 
   DlgParams.pBitmap             = pBitmap ; 
   DlgParams.uScale              = 10 ; 
   DlgParams.uWaveLen            = 5 ; 
   DlgParams.uFreeHandWaveFlags  = FILL_CLR | DIS_FRQ ; 
   DlgParams.nAngle              = 4500 ; 
   DlgParams.crFill              = RGB ( 200, 0, 0 ) ; 
   DlgParams.uDlgFlags           = DLG_FREEHANDWAVE_SHOW_PREVIEW        | 
                                   DLG_FREEHANDWAVE_SHOW_TOOL_ZOOMLEVEL ; 
   nRet = L_DlgInit( DLG_INIT_COLOR ) ; 
      return nRet; 
   nRet = L_DlgFreeHandWave ( hWnd, &DlgParams ) ; 
   if(nRet < 1) 
      return nRet; 
   if ( NULL != DlgParams.pAmplitudes ) 
      GlobalFree ( DlgParams.pAmplitudes ) ; 
   nRet = L_DlgFree () ; 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
Help Version 20.0.2019.11.25
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