| Microsoft DirectX 8.1 (C++) |
The CImagePalette class is a specialized class for image renderers that must create and manage palettes. It can be used to create palette handles from a media format containing a VIDEOINFO structure in the format block. To maximize performance, the class attempts to create a palette that is an identity palette (that is, one that exactly matches the current system palette), and compares palettes before updating to ensure that palettes are changed only when actually required.
Protected Data Members
| m_hPalette | Palette handle owned by this object. |
| m_pBaseWindow | Window in which to realize the palette. |
| m_pDrawImage | Object that will perform the drawing. |
| m_pMediaFilter | Media filter to send events to. |
Member Functions
| CImagePalette | Constructs a CImagePalette object. |
| CopyPalette | Copies the palette out of any YUV or true-color VIDEOINFOHEADER structure into a palettized VIDEOINFOHEADER structure. |
| MakeIdentityPalette | Ensures the palette entries will become an identity palette. |
| MakePalette | Retrieves the color palette from the specified video image. |
| PreparePalette | Specifies an entry point for updating and creating palettes. |
| RemovePalette | Releases any palette resources allocated. |
| ShouldUpdate | Specifies an internal helper member function for updating palettes dynamically. |