急!!!VC中MFC中BITMAP结构体的详细定义以及使用是怎样的?

[lionlicn]

VC中MFC中BITMAP结构体的详细定义以及使用是怎样的?
在CBitmap类中使用到指向BITMAP结构指针,我想了解BTMAP结构的详细定义以及使用.
谢谢!!

[linxy2002]

哦，

[招财猫_Martin]

http://blog.csdn.net/promaster/archive/2004/07/12/39380.aspx

[EnochShen]

typedef struct tagBITMAP { /* bm */
int bmType;//必须是BM
int bmWidth;//指定位图的宽度（以象素为单位）
int bmHeight;//指定位图的高度（以象素为单位）。
int bmWidthBytes;//一行几个字节，4位对齐
BYTE bmPlanes;//指定目标设备的位面数
BYTE bmBitsPixel;//指定每个象素的位数
LPVOID bmBits;//图象数据
} BITMAP;

CBitmap* pBmp = new CBitmap;
pBmp->LoadBitmap();
BITMAP bmp;
pBmp->GetObject(sizeof(BITMAP),(LPVOID)&bmp);

[EnochShen]

错了一个int bmType;//BMP的类型，

[luxin24]

MFC Library Reference

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

typedef struct tagBITMAP { /* bm */
int bmType;
int bmWidth;
int bmHeight;
int bmWidthBytes;
BYTE bmPlanes;
BYTE bmBitsPixel;
LPVOID bmBits;
} BITMAP;
Parameters
bmType
Specifies the bitmap type. For logical bitmaps, this member must be 0.
bmWidth
Specifies the width of the bitmap in pixels. The width must be greater than 0.
bmHeight
Specifies the height of the bitmap in raster lines. The height must be greater than 0.
bmWidthBytes
Specifies the number of bytes in each raster line. This value must be an even number since the graphics device interface (GDI) assumes that the bit values of a bitmap form an array of integer (2-byte) values. In other words, bmWidthBytes * 8 must be the next multiple of 16 greater than or equal to the value obtained when the bmWidth member is multiplied by the bmBitsPixel member.
bmPlanes
Specifies the number of color planes in the bitmap.
bmBitsPixel
Specifies the number of adjacent color bits on each plane needed to define 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 1-byte values.