BITMAP

The BITMAP structure defines the type, width, height, color format, and bit values of a bitmap.

typedef struct tagBITMAP { // bm
LONG bmType;
LONG bmWidth;
LONG bmHeight;
LONG bmWidthBytes;
WORD bmPlanes;
WORD bmBitsPixel;
LPVOID bmBits;
} BITMAP;


Members

bmType

Specifies the bitmap type. This member must be zero.

bmWidth

Specifies the width, in pixels, of the bitmap. The width must be greater than zero.

bmHeight

Specifies the height, in pixels, of the bitmap. The height must be greater than zero.

bmWidthBytes

Specifies the number of bytes in each scan line. This value must be divisible by 2, because Windows assumes that the bit values of a bitmap form an array that is word aligned.

bmPlanes

Specifies the count of color planes.

bmBitsPixel

Specifies the number of bits required to indicate the color of a pixel.

bmBits

Points to the location of the bit values for the bitmap. The bmBits member must be a long pointer to an array of character (1-byte) values.

Remarks

The bitmap formats currently used are monochrome and color. The monochrome bitmap uses a one-bit, one-plane format. Each scan is a multiple of 32 bits.
Scans are organized as follows for a monochrome bitmap of height n:

Scan 0
Scan 1
.
.
Scan n-2
Scan n-1