LBitmap::ChangeHue
#include "ltwrappr.h"
virtual L_INT LBitmap::ChangeHue(nAngle)
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L_INT nAngle; |
/* angular amount to change the hue, in degrees.*/ |
Changes the hue of colors in the class object's bitmap by rotating the color wheel.
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Parameter |
Description |
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nAngle |
Angular amount to change the hue, in degrees. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes. |
Comments
This function can rotate the color wheel in either direction. A 180-degree rotation in either direction changes each color to its complement. Positive rotation takes red toward green, green toward blue, and blue toward red. Negative rotation has the opposite effect.
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.
This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.
Required DLLs and Libraries
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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);
// change each color to complement
m_Bitmap.ChangeHue(180);