?
Solved

Changing text color in a Dialog edit box

Posted on 1998-10-01
2
Medium Priority
?
270 Views
Last Modified: 2013-11-20
I would like to be able to dynamically change the color of the text in my dialog edit ctrl.

For example:

  In my modeless dialog, if the user enters vaild data and presses OK the text in the edit ctrl would turn green otherwise it would turn read.


Thanks.

-Eric






0
Comment
Question by:nielsew
  • 2
2 Comments
 
LVL 8

Accepted Solution

by:
Answers2000 earned 400 total points
ID: 1322816
Override the WM_CtlColor message to change the color of the control.

You can do this in the dialog, or derive a class from CEdit (and override the reflection version which has an = sign before the name).

When you override this message you
1. Can set the text color using
pDC->SetTextColor( RGB(whatever) ) ;

2. Can set the background using
pDC->SetBkColor( RGB(whatever) ) ;
and returning an HBRUSH wish a solid color


Therefore the steps are
A. Add an HBRUSH to the dialog class as a member variable
B. In your constructor create a brush or brushes

m_hBrush = ::m_hbr = CreateSolidBrush( RGB(whatever) ) ;

C. In your destructor destroy the brush or brushes

DeleteObject( m_hBrush ) ;

D. Override the WM_CTLCOLOR message.  You can check it's the control you're interesting in by checking the pWnd and nCtlColor values

example
HBRUSH CMyDialog::OnCtlColor( CDC* pDC, CWnd* pWnd, UINT nCtlColor )
{
   if ( _red_ )
   {
     pDC->SetTextColor( RGB(255,0,0) ) ;
     pDC->SetTextColor( RGB(255,255,255) ) ;
     return m_hBrush ;
   }

   // etc
}

E. When you want to force a repaint of the particular control set a flag indicating if it's red, green or whatever, then force a repaint as

GetDlgItem(ID_MYEDIT)->InvalidateRect( NULL, TRUE ) ;
GetDlgItem(ID_MYEDIT)->UpdateWindow() ;

F. So you know RGB values you  might find useful

RGB(255,0,0) =  bright red
RGB(0,0,255) = bright green
RGB(255,255,255) = white
RGB(0,0,0) = black

RGB(128,0,0) = dark red
RGB(0,0,128) = dark green

0
 
LVL 8

Expert Comment

by:Answers2000
ID: 1322817
This m_hBrush = ::m_hbr = CreateSolidBrush( RGB(whatever) ) ;

should have said

m_hBrush = ::CreateSolidBrush( RGB(whatever) ) ;

example

m_hBrushWhite = ::CreateSolidBrush( RGB(255,255,255) ) ;

0

Featured Post

Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

Question has a verified solution.

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

Introduction: Dialogs (1) modal - maintaining the database. Continuing from the ninth article about sudoku.   You might have heard of modal and modeless dialogs.  Here with this Sudoku application will we use one of each type: a modal dialog …
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Stellar Phoenix SQL Database Repair software easily fixes the suspect mode issue of SQL Server database. It is a simple process to bring the database from suspect mode to normal mode. Check out the video and fix the SQL database suspect mode problem.
Suggested Courses

599 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