Assembly: System.Drawing (in System.Drawing.dll)
An ImageAttributes object maintains color and grayscale settings for five adjustment categories: default, bitmap, brush, pen, and text. For example, you can specify a gamma value for the default category, a different gamma value for the bitmap category, and still a different gamma value for the pen category.
The default color-adjustment and grayscale-adjustment settings apply to all categories that do not have adjustment settings of their own. For example, if you never specify any adjustment settings for the pen category, the default settings apply to the pen category.
Opens an Image that uses the file Camera.jpg.
Sets the gamma value of the ImageAttributes object to 0.25.
Draws the image to the screen.
Calls the SetNoOp method.
Draws the image (a second camera) to the screen; however, because the SetNoOp method was called, the gamma setting defaults to a value of 1.0 and the image is drawn to the screen with the default gamma setting.
Note that the image on the left is very washed out (gamma of 0.25) and the image on the right has more contrast (gamma of 1.0).