Method function IGDIPlus.IGPImageAttributes.ClearColorMatrices(TGPColorAdjustType) : TGPImageAttributes
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ClearColorMatrices( Type_ );
Clears the color-adjustment matrix and the grayscale-adjustment matrix for a specified category.
Call this method to clear the color-adjustment matrix and the grayscale-adjustment matrix for a specified category. Remarks An TGPImageAttributes object maintains color and grayscale settings for five adjustment categories: default, bitmap, brush, pen, and text. For example, you can specify a pair (color and grayscale) of adjustment matrices for the default category, a different pair of adjustment matrices for the bitmap category, and still a different pair of adjustment matrices for the pen category.
The default color- and grayscale-adjustment settings apply to all categories that don't have adjustment settings of their own. For example, if you never specify any adjustment settings for the pen category, then the default settings apply to the pen category.
As soon as you specify a color- or grayscale-adjustment setting for a certain category, the default adjustment settings no longer apply to that category. For example, suppose you specify a pair (color and grayscale) of adjustment matrices and a gamma value for the default category. If you set a pair of adjustment matrices for the pen category by calling SetColorMatrices, then the default adjustment matrices will not apply to pens. If you later clear the pen adjustment matrices by calling ClearColorMatrices, the pen category will not revert to the default adjustment matrices; rather, the pen category will have no adjustment matrices. Similarly, the pen category will not revert to the default gamma value; rather, the pen category will have no gamma value.