LDialogImageEffect::DoModalWaveShear

#include "ltwrappr.h"

virtual L_INT LDialogImageEffect::DoModalWaveShear(hWndOwner)

Displays the Wave Shear dialog box, and gets the options for LBitmap::FreeHandShear.

Returns

Comments

LDialogImageEffect::SetWaveShearParams must be called before using this function to set the initial values for the dialog. You can get the updated WAVESHEARDLGPARAMS with the values entered by the user through the dialog by using LDialogImageEffect::GetWaveShearParams.

The Wave Shear 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: distorts the image using a curve wave.

• 

  Linear: 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. Flip the curve vertically and horizontally.

• 

  Vertically. Flip the curve vertically.

• 

  Horizontally. 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 "*.lsr" file that contains Shear Wave curve settings, using the Load dialog. The loaded file will set a new curve.

Save Button:

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

Required DLLs and Libraries

L_INT LDialogImageEffect_DoModalWaveShearExample(LBitmap * pBitmap, HWND hWnd) 
{ 
   L_INT nRet; 
   LDialogImageEffect DlgImageEffect; 
   nRet = LDialogImageEffect::Initialize(DLG_INIT_COLOR ); 
   if(nRet != SUCCESS) 
      return nRet; 
   DlgImageEffect.SetBitmap(pBitmap); 
   WAVESHEARDLGPARAMS DlgParams; 
   memset ( &DlgParams, 0, sizeof ( WAVESHEARDLGPARAMS ) ); 
   DlgParams.uStructSize      = sizeof ( WAVESHEARDLGPARAMS ); 
   DlgImageEffect.EnableCallBack (FALSE); 
   DlgImageEffect.EnablePreview(TRUE); 
   DlgImageEffect.EnableAutoProcess(TRUE); 
   DlgImageEffect.EnableToolbar(TRUE); 
   nRet = DlgImageEffect.SetWaveShearParams(&DlgParams); 
   if(nRet != SUCCESS) 
      return nRet; 
   nRet = DlgImageEffect.DoModalWaveShear(hWnd); 
   if(nRet < 1) 
      return nRet; 
   // Gets the updated values for the structure 
   nRet = DlgImageEffect.GetWaveShearParams(&DlgParams, sizeof(DlgParams)); 
   if(nRet != SUCCESS) 
      return nRet; 
   if ( NULL != DlgParams.pAmplitudes ) 
   { 
      GlobalFree ( DlgParams.pAmplitudes ); 
   } 
   nRet = LDialogImageEffect::Free(); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
}