LBitmapBase::IsGrayScale
#include "ltwrappr.h"
virtual L_INT LBitmapBase::IsGrayScale(void)
Returns an indicator that shows the kind of grayscale palette, if any, that a bitmap has.
Returns
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GRAY_NO |
[0] Not grayscale. |
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GRAY_ORDEREDNORMAL |
[1] Normally ordered grayscale (dark to light). |
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GRAY_ORDEREDINVERSE |
[2] Reverse ordered grayscale (light to dark). |
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GRAY_NOTORDERED |
[3] Unordered grayscale. |
Comments
Grayscale images can be 1-bit, 4-bit, 8-bit, 12-bit or 16-bit. With a 1-bit image, you can use this function to check for inversion (for example, white lines on a black background) caused by an inverted palette.
Support for 12 and 16-bit grayscale images is only available in the Document/Medical toolkits.
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
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Elements: |
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Topics: |
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Raster Image Functions: Working with Color Halftones, Halftones, and Grayscale Images |
Example
For an example, refer to LBitmapBase::GrayScale.