References ▼
#include "l_bitmap.h"
L_LTDLG_API L_INT L_DlgGammaAdjustment(hWndOwner, pDlgParams)
Displays the Gamma Adjustment dialog box and gets the options for the gamma correction functions.
Handle of the window which owns the dialog.
Pointer to a GAMMAADJUSTMENTDLGPARAMS 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 Gamma Adjustment dialog.
Required DLLs and Libraries
L_INT ShowDlgGammaAdjustmentExample(HWND hWnd,pBITMAPHANDLE pBitmap){L_INT nRet;GAMMAADJUSTMENTDLGPARAMS DlgParams ;memset ( &DlgParams, 0, sizeof ( GAMMAADJUSTMENTDLGPARAMS ) ) ;DlgParams.uStructSize = sizeof ( GAMMAADJUSTMENTDLGPARAMS ) ;DlgParams.pBitmap = pBitmap ;DlgParams.nRedValue = 50 ;DlgParams.nGreenValue = 50 ;DlgParams.nBlueValue = 50 ;DlgParams.uDlgFlags = DLG_GAMMAADJUSTMENT_SHOW_PREVIEW |DLG_GAMMAADJUSTMENT_SHOW_TOOL_ZOOMLEVEL;nRet = L_DlgInit ( DLG_INIT_COLOR ) ;if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED)return nRet;nRet = L_DlgGammaAdjustment ( hWnd, &DlgParams ) ;if(nRet < 1)return nRet;nRet = L_DlgFree () ;if(nRet != SUCCESS)return nRet;return SUCCESS;} ;