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Displays the Gradient Filter dialog box, and gets the options for LBitmap::SpatialFilter.
#include "ltwrappr.h"
virtual L_INT LDialogImageEffect::DoModalGradientFilter(hWndOwner)
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::SetGradientFilterParams must be called before using this function to set the initial values for the dialog. You can get the updated GRADIENTFILTERDLGPARAMS with the values entered by the user through the dialog by using LDialogImageEffect::GetGradientFilterParams.
L_INT LDialogImageEffect_DoModalGradientFilterExample(LBitmap * pBitmap, HWND hWnd){L_INT nRet;LDialogImageEffect DlgImageEffect;nRet = LDialogImageEffect::Initialize(0);if(nRet != SUCCESS)return nRet;DlgImageEffect.SetBitmap(pBitmap);GRADIENTFILTERDLGPARAMS DlgParams;memset ( &DlgParams, 0, sizeof ( GRADIENTFILTERDLGPARAMS ) );DlgParams.uStructSize = sizeof ( GRADIENTFILTERDLGPARAMS );DlgParams.pFilter = FLT_GRADIENT_NE;DlgImageEffect.EnableCallBack (FALSE);DlgImageEffect.EnablePreview(TRUE);DlgImageEffect.EnableAutoProcess(TRUE);DlgImageEffect.EnableToolbar(TRUE);nRet = DlgImageEffect.SetGradientFilterParams(&DlgParams);if(nRet != SUCCESS)return nRet;nRet = DlgImageEffect.DoModalGradientFilter(hWnd);if(nRet < 1)return nRet;// Gets the updated values for the structurenRet = DlgImageEffect.GetGradientFilterParams(&DlgParams, sizeof(DlgParams));if(nRet != SUCCESS)return nRet;nRet = LDialogImageEffect::Free();if(nRet != SUCCESS)return nRet;return SUCCESS;}