L_GetPaintContrast

#include "l_bitmap.h"

L_LTDIS_API L_INT L_GetPaintContrast(pBitmap)

Gets the current contrast value for the specified bitmap. This value is set by the L_SetPaintContrast function.

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the bitmap from which to retrieve the contrast value. This cannot be NULL.

Returns

The current contrast setting. Possible values are -1000 to +1000.

Required DLLs and Libraries

LTDIS
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

Functions

L_SetPaintContrast
L_GetPaintGamma
L_SetPaintGamma
L_GetPaintIntensity
L_SetPaintIntensity

Topics

Raster Image Functions: Displaying Images

Example

This example gets the current paint settings, and then updates the bitmap to reflect those values.

L_INT GetPaintContrastExample(pBITMAPHANDLE pBitmap) 
{ 
   L_INT nRet; 
   L_INT    nContrast; 
   L_UINT   uGamma; 
   L_INT    nIntensity; 
 
   /* Get the values */ 
   nContrast   = L_GetPaintContrast(pBitmap); 
   uGamma      = L_GetPaintGamma(pBitmap); 
   nIntensity  = L_GetPaintIntensity(pBitmap); 
 
   /* Update the bitmap */ 
   nRet = L_ChangeBitmapContrast(pBitmap, nContrast, 0); 
   if(nRet != SUCCESS) 
      return nRet; 
   nRet = L_GammaCorrectBitmap(pBitmap, uGamma, 0); 
   if(nRet != SUCCESS) 
      return nRet; 
   nRet = L_ChangeBitmapIntensity(pBitmap, nIntensity, 0); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
}