please dont rip this site Prev Next

Chord info  Overview  Group

The Chord function draws a chord (a region bounded by the intersection of an ellipse and a line segment, called a ďsecantĒ). The chord is outlined by using the current pen and filled by using the current brush.

BOOL Chord(

    HDC hdc,

// handle to device context

    int nLeftRect,

// x-coordinate of the upper-left corner of the bounding rectangle

    int nTopRect,

// y-coordinate of the upper-left corner of the bounding rectangle

    int nRightRect,

// x-coordinate of the lower-right corner of the bounding rectangle

    int nBottomRect,

// y-coordinate of the lower-right corner of the bounding rectangle

    int nXRadial1,

// x-coordinate of the first radialís endpoint

    int nYRadial1,

// y-coordinate of the first radialís endpoint

    int nXRadial2,

// x-coordinate of the second radialís endpoint

    int nYRadial2 

// y-coordinate of the second radialís endpoint

   );

Parameters

hdc
Identifies the device context in which the chord appears.
nLeftRect
Specifies the x-coordinate of the upper-left corner of the bounding rectangle.
nTopRect
Specifies the y-coordinate of the upper-left corner of the bounding rectangle.
nRightRect
Specifies the x-coordinate of the lower-right corner of the bounding rectangle.
nBottomRect
Specifies the y-coordinate of the lower-right corner of the bounding rectangle.
nXRadial1
Specifies the x-coordinate of the endpoint of the radial defining the beginning of the chord.
nYRadial1
Specifies the y-coordinate of the endpoint of the radial defining the beginning of the chord.
nXRadial2
Specifies the x-coordinate of the endpoint of the radial defining the end of the chord.
nYRadial2
Specifies the y-coordinate of the endpoint of the radial defining the end of the chord.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The curve of the chord is defined by an ellipse that fits the specified bounding rectangle. The curve begins at the point where the ellipse intersects the first radial and extends counterclockwise to the point where the ellipse intersects the second radial. (A radial is a line segment drawn from the center of the ellipse to a specified endpoint on the ellipse.) The chord is closed by drawing a line from the intersection of the first radial and the curve to the intersection of the second radial and the curve.

If the starting point and ending point of the curve are the same, a complete ellipse is drawn.

The current position is neither used nor updated by Chord.

Windows 95: The sum of the coordinates of the bounding rectangle cannot exceed 32,767. The sum of nLeftRect and nRightRect or nTopRect and nBottomRect parameters cannot exceed 32,767.

See Also

AngleArc, Arc, ArcTo, Pie 

See also:


file: /Techref/os/win/api/win32/func/src/f05_12.htm, 5KB, , updated: 2000/4/7 12:19, local time: 2022/5/25 01:29,
TOP NEW HELP FIND: 
3.238.72.122: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/func/src/f05_12.htm"> Chord</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 @20220525
* 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!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .