Solved

How to determine color of a button programmatically?

Posted on 2002-07-16
11
210 Views
Last Modified: 2010-04-01
I have a handle to a button. How do I get color of a botton?
0
Comment
Question by:petlev
  • 5
  • 3
  • 2
  • +1
11 Comments
 
LVL 86

Expert Comment

by:jkr
ID: 7157314
Assuming that you are talking Win32 here:

HDC hDC = GetDC ( hButton);

COLORREF cr = GetBkColor ( hDC);

ReleaseDC ( hDC);
0
 
LVL 86

Accepted Solution

by:
jkr earned 200 total points
ID: 7157320
BTW: You can retrieve the color information about any point of the screen using 'GetPixel()'
0
 
LVL 8

Expert Comment

by:fl0yd
ID: 7158292
One thing to add: Do you want the color of a specific button (since you explicitly stated having a handle, one would have to assume so) or the color of buttons in general. If the latter is the case, you can use:
COLORREF crBtn = GetSysColor( COLOR_BTNFACE );
or if you want to use it as a brush:
HBRUSH hbrBtn = GetSysColorBrush( COLOR_BTNFACE );
Since this is a system brush you won't have to call DeleteObject( hbrBtn ); when you're done with it.
0
 
LVL 31

Expert Comment

by:Zoppo
ID: 7158839
Addition to jkr's suggestion: If maybe the button's color is
modified by the app you may need to send a WM_CTLCOLORBTN to
the button's parent before the GetBkColor().

0
 

Author Comment

by:petlev
ID: 7194013
By using GetBkColor() I get same result no matter what background color is.
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 86

Expert Comment

by:jkr
ID: 7275593
Thanks, but why did you accept my comment as an answer and graded a "C" then? If it did not help, it is not an answer...
0
 

Author Comment

by:petlev
ID: 7277740
jkr,
I accepted your comment as an answer because 'GetPixel()' function seems to be the only way to get a background color in my case. I gave you "C" because you did not offer any code.
Thanks!
0
 
LVL 8

Expert Comment

by:fl0yd
ID: 7277749
WTF?!? How much more code do you need?!? And where exactly does it say so in your question, anyway? Sorry, I just got a bit angry and had to get it out.

.f
0
 
LVL 86

Expert Comment

by:jkr
ID: 7281093
>>I gave you "C" because you did not offer any code

Err, what exacly is unclear about a function that works in a style of

int n = multiply ( 1, 2);

?

OK, so here is your code sample.

COLORREF cr;
int nXPos;
int nYPos;
HDC hdc;

// initialize parameters

cr = GetPixel ( hdc, nXPos, nYPos);
0
 

Author Comment

by:petlev
ID: 7281251
I'm sorry if anybody is a bit angry. I am not very familiar with C++; I was not sure how to use it.
0
 
LVL 86

Expert Comment

by:jkr
ID: 7282529
Not angry - just irritated :o)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Quicksort a dynamic deque 33 66
Implementing a ResolveEventHandler in C++ 13 116
Fast, free, private online code repository / editor 7 90
Writing a parser for java language 4 71
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
Written by John Humphreys C++ Threading and the POSIX Library This article will cover the basic information that you need to know in order to make use of the POSIX threading library available for C and C++ on UNIX and most Linux systems.   [s…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

24 Experts available now in Live!

Get 1:1 Help Now