LBitmap::ChangeContrast
#include "ltwrappr.h"
virtual L_INT LBitmap::ChangeContrast(nChange)
L_INT nChange; |
/* amount of contrast change */ |
Increases or decreases the contrast of the image in a bitmap.
Parameter |
Description |
nChange |
Amount of contrast change. Valid values are -1000 to +1000. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.
This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
When applying contrast, gamma, and intensity changes to a bitmap, LEAD applies the changes in the following order:
Contrast
Intensity
Gamma
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. |
See Also
Example
LBitmap m_Bitmap;
m_Bitmap.Load(TEXT("image1.cmp"), 0,ORDER_BGR);
m_Bitmap.ChangeContrast(500);