IIXC_Page::GetPixelIndex Method

Latest revision as of 02:16, 15 June 2015

The method retrieves the page palette's color index for the pixel at the specified coordinates..

Syntax

HRESULT GetPixelIndex([in]  LONG   nX,
                      [in]  LONG   nY,
                      [in]  LONG*  nIndex);

Parameters

nX

[in] Specifies x-coordinate of the pixel to be examined.

nY

[in] Specifies y-coordinate of the pixel to be examined.

nIndex

[in] Pointer to LONG variable which will receive the index of the specified pixel's color within the page palette.

Return Value

Returns S_OK if operation was successful or error code in other cases.

Remarks

For indexed formats (1 bpp, and 8 bpp) the function will return the index of the pixel's color within the page palette; for grayscaled images (Gray, and Gray with Aplha) the function will return the gray level; for TrueColor formats index will contain -1.

See Also

IIXC_Page