The LEADTOOLS C++ Class Library is a wrapper to the LEADTOOLS C API and provides only a subset of the features and functionality otherwise available in the LEADTOOLS C API. For more information about the full feature set of the LEADTOOLS C API, refer to LEADTOOLS C API Introduction.
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#include "ltwrappr.h"
virtual L_INT LDialogImageEffect::DoModalWaveShear(hWndOwner)
Displays the Wave Shear dialog box, and gets the options for LBitmap::FreeHandShear.
Handle of the window which owns the dialog.
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. |
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.
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.
✎ NOTE
Loading curve settings will overwrite all current settings!
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;
}