References ▼
#include "l_bitmap.h"
L_LTDLG_API L_INT L_DlgGetGradient(hWndOwner, pDlgParams)
Displays the Get Gradient dialog box, and gets the options for L_EfxGradientFillRect.
Handle of the window which owns the dialog.
Pointer to a GRADIENTDLGPARAMS 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.
| 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. |
The Get Gradient dialog.
Required DLLs and Libraries
L_INT ShowDlgGetGradientExample(HWND hWnd,pBITMAPHANDLE pBitmap){L_INT nRet;GRADIENTDLGPARAMS DlgParams ;HDC hDC ;RECT rcDst ;memset ( &DlgParams, 0, sizeof ( GRADIENTDLGPARAMS ) ) ;DlgParams.uStructSize = sizeof ( GRADIENTDLGPARAMS ) ;DlgParams.pBitmap = pBitmap ;DlgParams.crStart = RGB ( 0,0,255 ) ;DlgParams.crEnd = RGB ( 255,0,0 ) ;DlgParams.uStyle = EFX_GRADIENT_ANGLE_TO_RT ;DlgParams.uSteps = 200 ;DlgParams.uDlgFlags = DLG_GRADIENT_SHOW_PREVIEW |DLG_GRADIENT_AUTOPREVIEW |DLG_GRADIENT_STARTCOLOR |DLG_GRADIENT_ENDCOLOR |DLG_GRADIENT_STEPS |DLG_GRADIENT_NO_TREEVIEW |DLG_GRADIENT_CLASS_LINEAR |DLG_GRADIENT_CLASS_ANGULAR |DLG_GRADIENT_CLASS_RECTANGULAR |DLG_GRADIENT_CLASS_ELLIPTICAL |DLG_GRADIENT_CLASS_CONICAL ;nRet = L_DlgInit ( DLG_INIT_COLOR ) ;if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED)return nRet;nRet = L_DlgGetGradient ( hWnd, &DlgParams );if ( SUCCESS_DLG_OK == nRet ){hDC = GetDC ( hWnd ) ;GetClientRect ( hWnd, &rcDst ) ;nRet = L_EfxGradientFillRect(hDC,&rcDst,DlgParams.uStyle,DlgParams.crStart,DlgParams.crEnd,DlgParams.uSteps ) ;if(nRet != SUCCESS)return nRet;ReleaseDC ( hWnd, hDC ) ;}nRet = L_DlgFree();if(nRet != SUCCESS)return nRet;return SUCCESS;}