unsigned FreeImage_GetColorsUsed(FIBITMAP *dib);

Retrieves the number of colours used in the bitmap. If the bitmap is non-palletised, 0 is returned.

BYTE * FreeImage_GetBits(FIBITMAP *dib);

Returns a pointer to the bitmap bits.

BYTE * FreeImage_GetBitsRowCol(FIBITMAP *dib, int col, int row);

Returns a pointer to the bitmap bits on the given column and row.

BYTE * FreeImage_GetScanLine(FIBITMAP *dib, int scanline);

Returns a pointer to the beginning of the bits of the given scanline.

unsigned FreeImage_GetBPP(FIBITMAP *dib);

Returns the bitdepth of the bitmap.

unsigned FreeImage_GetWidth(FIBITMAP *dib);

Returns the width of the bitmap in pixels.

unsigned FreeImage_GetHeight(FIBITMAP *dib);

Returns the height of the bitmap in pixels.

unsigned FreeImage_GetLine(FIBITMAP *dib);

Returns the width of the bitmap in bytes.

unsigned FreeImage_GetPitch(FIBITMAP *dib);

Returns the width of the bitmap in bytes rounded to the nearest DWORD.

unsigned FreeImage_GetDIBSize(FIBITMAP *dib);

Returns the size of the bitmap in bytes. The size of the bitmap is the BITMAPINFOHEADER + the size of the palette + the size of the bitmap data.

RGBQUAD *FreeImage_GetPalette(FIBITMAP *dib);

Returns a pointer to the bitmap's palette. If the bitmap doesn't have a palette, FreeImage_GetPalette returns NULL.

BITMAPINFOHEADER *FreeImage_GetInfoHeader(FIBITMAP *dib);

Returns a pointer to the bitmap's BITMAPINFOHEADER.

BITMAPINFO *FreeImage_GetInfo(FIBITMAP *dib);

Returns a pointer to the bitmap's BITMAPINFO header.

FREE_IMAGE_COLOR_TYPE FreeImage_GetColorType(FIBITMAP *dib);

Investigates the colour type of the bitmap and returns one of the following values:

Value	Description
FIC_MINISWHITE	1-bit bitmap. The min value is white
FIC_MINISBLACK	1-bit bitmap. The min value is black 8-bit grayscale. The min value is black
FIC_RGB	24/32-bit RGB
FIC_PALETTE	1/4/8-bit palletised