L_DlgPNGWebTuner

// Example 1: 
L_INT DlgPNGWebTunerFirstExample(HWND hWnd,pBITMAPHANDLE pBitmap) 
{ 
   L_INT nRet; 
   PNGWEBTUNERDLGPARAMS DlgParams ; 
 
   memset ( &DlgParams, 0, sizeof ( PNGWEBTUNERDLGPARAMS ) ) ; 
 
   DlgParams.uStructSize   = sizeof ( PNGWEBTUNERDLGPARAMS ) ; 
   DlgParams.pBitmap       = pBitmap ; 
   DlgParams.uDlgFlags     = DLG_PNGWEBTUNER_SHOW_EXPORT           | 
                             DLG_PNGWEBTUNER_SHOW_INFORMATION      | 
                             DLG_PNGWEBTUNER_SHOW_PREVIEW          | 
                             DLG_PNGWEBTUNER_SHOW_TOOL_ZOOMLEVEL   | 
                             DLG_PNGWEBTUNER_SHOW_TOOL_COLORPICKER | 
                             DLG_PNGWEBTUNER_SHOW_TRANSPARENCY     | 
                             DLG_PNGWEBTUNER_SHOW_ADDWINDOWCOLOR   ; 
 
   nRet = L_DlgInit ( DLG_INIT_COLOR ) ; 
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED) 
      return nRet; 
 
   nRet = L_DlgPNGWebTuner ( hWnd, &DlgParams ) ; 
   if(nRet < 1) 
      return nRet; 
 
   nRet = L_DlgFree ( ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
} ; 
 
// Example 2: 
static COLORREF AddTolerance(COLORREF   crColor, 
                             L_INT      nTolerance) 
{ 
   L_INT nRed ; 
   L_INT nGreen ; 
   L_INT nBlue ; 
 
   nRed   = max ( min ( ( L_INT ) GetRValue ( crColor ) + nTolerance, 255 ), 0 ) ; 
   nGreen = max ( min ( ( L_INT ) GetGValue ( crColor ) + nTolerance, 255 ), 0 ) ; 
   nBlue  = max ( min ( ( L_INT ) GetBValue ( crColor ) + nTolerance, 255 ), 0 ) ; 
 
   return RGB ( nRed, nGreen, nBlue ) ; 
} 
 
static L_VOID ExportBitmap(L_TCHAR*                 szFileName, 
                           pBITMAPHANDLE            pBitmap, 
                           LPPNGWEBTUNERDLGPARAMS   pParam) 
{ 
   {// TRANSPERANCY 
      if ( pParam->bTransparent )  
      { 
         COLORREF crTransparentStart ; 
         COLORREF crTransparentEnd ; 
 
         crTransparentStart = AddTolerance ( pParam->crTransparent,  
                                             - pParam->nTransparencyTolerance ) ; 
 
         crTransparentEnd   = AddTolerance ( pParam->crTransparent,  
                                             pParam->nTransparencyTolerance ) ; 
         // reset 
         L_FreeBitmapRgn ( pBitmap ) ; 
 
         // set attributes 
         pBitmap->Flags.Transparency = TRUE ; 
         pBitmap->Transparency       = pParam->crTransparent ; 
 
         // replace colors 
         if ( pParam->nTransparencyTolerance >= 0 ) 
         { 
            L_SetBitmapRgnColorRGBRange ( pBitmap,  
                                          crTransparentStart,  
                                          crTransparentEnd,  
                                          L_RGN_SET ) ; 
 
            if ( L_BitmapHasRgn ( pBitmap ) ) 
            { 
               L_FillBitmap ( pBitmap, pParam->crTransparent ) ; 
            } 
 
            L_FreeBitmapRgn ( pBitmap ) ; 
         } 
      } 
 
   }// TRANSPERANCY 
 
   {// COLOR RESOLUTION 
 
      L_UINT32 uFlags ; 
 
      if ( pParam->nBitsPerPixel < 24 ) 
      { 
         uFlags  = ( ( pParam->bAddWindowsColors ) && ( CRF_OPTIMIZEDPALETTE == pParam->nPalType ) ) ? CRF_IDENTITYPALETTE : 0 ; 
         uFlags |= pParam->nDitherType ; 
         uFlags |= pParam->nPalType ; 
 
         L_ColorResBitmap ( pBitmap,  
                            pBitmap, 
                            sizeof(BITMAPHANDLE), 
                            pParam->nBitsPerPixel,  
                            uFlags,  
                            NULL,  
                            NULL,  
                            pParam->nNumOfColors,  
                            NULL,  
                            NULL ) ; 
 
      } 
 
   }// COLOR RESOLUTION 
 
   {// SAVE TO DISK 
 
   L_SaveBitmap ( szFileName, 
                  pBitmap, 
                  FILE_PNG,  
                  pParam->nBitsPerPixel,  
                  0,  
                  NULL ) ; 
 
   }// SAVE TO DISK 
} 
 
L_INT DlgPNGWebTunerSecondExample(HWND hWnd,pBITMAPHANDLE pBitmap) 
{ 
 
   L_INT                nRet ; 
   PNGWEBTUNERDLGPARAMS DlgParams ; 
 
   memset ( &DlgParams, 0, sizeof ( PNGWEBTUNERDLGPARAMS ) ) ; 
 
   DlgParams.uStructSize   = sizeof ( PNGWEBTUNERDLGPARAMS ) ; 
   DlgParams.pBitmap       = pBitmap ; 
   DlgParams.uDlgFlags     = DLG_PNGWEBTUNER_SHOW_INFORMATION      | 
                             DLG_PNGWEBTUNER_SHOW_PREVIEW          | 
                             DLG_PNGWEBTUNER_SHOW_TOOL_ZOOMLEVEL   | 
                             DLG_PNGWEBTUNER_SHOW_TOOL_COLORPICKER | 
                             DLG_PNGWEBTUNER_SHOW_TRANSPARENCY     | 
                             DLG_PNGWEBTUNER_SHOW_ADDWINDOWCOLOR   ; 
 
   nRet = L_DlgInit ( DLG_INIT_COLOR ) ; 
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED) 
      return nRet; 
   nRet = L_DlgPNGWebTuner ( hWnd, &DlgParams ) ; 
   L_DlgFree () ; 
 
   if ( SUCCESS_DLG_OK == nRet ) 
   { 
      ExportBitmap (MAKE_IMAGE_PATH(TEXT("tuned.gif")), pBitmap, &DlgParams ) ; 
   } 
   else 
      if( nRet < 1 ) 
         return nRet; 
   return SUCCESS;  
}