ImageAttributes::ClearOutputChannel method (gdiplusimageattributes.h)
The ImageAttributes::ClearOutputChannel method clears the cyan-magenta-yellow-black (CMYK) output channel setting for a specified category.
Syntax
Status ClearOutputChannel(
[in, optional] ColorAdjustType type
);
Parameters
[in, optional] type
Type: ColorAdjustType
Element of the ColorAdjustType enumeration that specifies the category for which the output channel setting is cleared. The default value is ColorAdjustTypeDefault.
Return value
Type: Status
If the method succeeds, it returns Ok, which is an element of the Status enumeration.
If the method fails, it returns one of the other elements of the Status enumeration.
Remarks
An ImageAttributes object maintains color and grayscale settings for five adjustment categories: default, bitmap, brush, pen, and text. For example, you can specify an output channel for the default category and a different output channel for the bitmap 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 bitmap category, then the default settings apply to the bitmap 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 an output channel and an adjustment matrix for the default category. If you set the output channel for the bitmap category by calling ImageAttributes::SetOutputChannel, then the default output channel will not apply to bitmaps. If you later clear the bitmap output channel by calling ImageAttributes::ClearOutputChannel, the bitmap category will not revert to the default output channel; rather, the bitmap category will have no output channel setting. Similarly, the bitmap category will not revert to the default color-adjustment matrix; rather, the bitmap category will have no color-adjustment matrix.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP, Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | gdiplusimageattributes.h (include Gdiplus.h) |
| Library | Gdiplus.lib |
| DLL | Gdiplus.dll |
See also
ImageAttributes::ClearOutputChannelColorProfile