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<hr><p align="left"><small>发信人: Chro (愁容), 信区: Delphi <br>
标 题: Re: 如何取得系统颜色数目? <br>
发信站: BBS 水木清华站 (Fri Dec 25 13:17:45 1998) <br>
<br>
【 在 earth (无穹无净) 的大作中提到: 】 <br>
: 用什么函数可获得系统使用8位或16位等? <br>
: 很急!! <br>
<br>
<br>
<br>
TI3198 - Finding the color depth of a canvas <br>
<br>
Product: Delphi <br>
Version: All <br>
Platform: Windows/Win32 <br>
<br>
<br>
<br>
<br>
<br>
When programming graphics in Windows, it it often desirable <br>
<br>
to know the number of colors available for a given canvas. <br>
<br>
This information is available through the GetDeviceCaps() <br>
<br>
functon. <br>
<br>
<br>
<br>
The color depth of a canvas is calculated by multiplying <br>
<br>
the number of bits per pixel that is required for a <br>
<br>
given canvas by the number of planes the canvas uses. <br>
<br>
<br>
<br>
You can find the color depth of a canvas in by using the <br>
<br>
following code: <br>
<br>
<br>
<br>
TotalNumBitsPerPixel := <br>
TotalNumBitsPerPixel := <br>
<br>
GetDeviceCaps(Canvas.Handle, BITSPIXEL) * <br>
<br>
GetDeviceCaps(Canvas.Handle, PLANES) <br>
<br>
<br>
<br>
Will give you the total number of bits used to color a pixel. <br>
<br>
<br>
<br>
Return values of: <br>
<br>
<br>
<br>
1 = 2 colors (monochrome) <br>
<br>
4 = 16 colors <br>
<br>
8 = 256 colors <br>
<br>
15 = 32,768 colors <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
DISCLAIMER: You have the right to use this technical information subject to the terms of the No-Nonsense <br>
License Statement that you received with the Borland product to which this inforrmation pertains. <br>
<br>
<br>
-- <br>
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 202.38.153.248] <br>
cn·[FROM: 202.38.153.248] <br>
<br>
16 = 65,536 colors <br>
<br>
24 = 16,777,216 colors <br>
<br>
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