please dont rip this site Prev Next

BITMAPCOREINFO info  Overview  Group

The BITMAPCOREINFO structure defines the dimensions and color information for a device-independent bitmap (DIB).

typedef struct _BITMAPCOREINFO {    // bmci 

        BITMAPCOREHEADER  bmciHeader; 

        RGBTRIPLE         bmciColors[1]; 

} BITMAPCOREINFO; 

 

Members

bmciHeader
Specifies a BITMAPCOREHEADER structure that contains information about the dimensions and color format of a DIB.
bmciColors
Specifies an array of RGBTRIPLE structures that define the colors in the bitmap.

Remarks

A DIB consists of two parts: a BITMAPCOREINFO structure describing the dimensions and colors of the bitmap, and an array of bytes defining the pixels of the bitmap. The bits in the array are packed together, but each scan line must be padded with zeroes to end on a LONG boundary. The origin of the bitmap is the lower left corner.

The bcBitCount member of the BITMAPCOREHEADER structure determines the number of bits that define each pixel and the maximum number of colors in the bitmap. This member can be one of the following values:

Value

Meaning

1

The bitmap is monochrome, and the bmciColors member contains two entries. Each bit in the bitmap array represents a pixel. If the bit is clear, the pixel is displayed with the color of the first entry in the bmciColors table; if the bit is set, the pixel has the color of the second entry in the table.

4

The bitmap has a maximum of 16 colors, and the bmciColors member contains up to 16 entries. Each pixel in the bitmap is represented by a 4-bit index into the color table. For example, if the first byte in the bitmap is 0x1F, the byte represents two pixels. The first pixel contains the color in the second table entry, and the second pixel contains the color in the sixteenth table entry.

8

The bitmap has a maximum of 256 colors, and the bmciColors member contains up to 256 entries. In this case, each byte in the array represents a single pixel.

24

The bitmap has a maximum of 2 (24) colors, and the bmciColors member is NULL. Each three-byte triplet in the bitmap array represents the relative intensities of red, green, and blue, respectively, for a pixel.

The colors in the bmciColors table should appear in order of importance.

Alternatively, for functions that use DIBs, the bmciColors member can be an array of 16-bit unsigned integers that specify indices into the currently realized logical palette, instead of explicit RGB values. In this case, an application using the bitmap must call the DIB functions (CreateDIBitmap, CreateDIBPatternBrush, and CreateDIBSection) with the iUsage parameter set to DIB_PAL_COLORS.

Note  The bmciColors member should not contain palette indices if the bitmap is to be stored in a file or transferred to another application. Unless the application has exclusive use and control of the bitmap, the bitmap color table should contain explicit RGB values.

See Also

BITMAPCOREHEADER, CreateDIBitmap, CreateDIBPatternBrush, CreateDIBSection, RGBTRIPLE 

See:

See also:


file: /Techref/os/win/api/win32/struc/src/str00_34.htm, 5KB, , updated: 2001/6/26 11:23, local time: 2022/5/19 10:35,
TOP NEW HELP FIND: 
3.235.24.113:LOG IN

 ©2022 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/os/win/api/win32/struc/src/str00_34.htm"> BITMAPCOREINFO</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

  PICList 2022 contributors:
o List host: MIT, Site host massmind.org, Top posters @20220519
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 

Welcome to www.piclist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .