Richedit and Colors

I am trying to use a Richedit Control with colored text . I have used colors for the text , using the CHARFORMAT structure , but I do not know how to set the background color of a chat . Warning : Not the background of the whole control
LVL 6
WxWAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

nietodCommented:
I suspect that is not possible.  I don't know much about richedit controls.  But it is not possible (that I know of--and I have looked) to set the background color in Microsoft Word (except the entire background)  And I doubt that richedit controls would have features that Word doesn't.
0
chensuCommented:
You can set the background color of a character with Rich Edit 2.0.

The CHARFORMAT2 structure contains information about character formatting in a rich edit control. CHARFORMAT2 is a Rich Edit version 2.0 extension of the CHARFORMAT structure. Rich Edit 2.0 allows you to use either structure with the EM_GETCHARFORMAT and EM_SETCHARFORMAT messages.

typedef struct _charformat2 {
    UINT        cbSize;
    _WPAD       _wPad1;
    DWORD       dwMask;
    DWORD       dwEffects;
    LONG        yHeight;
    LONG        yOffset;
    COLORREF    crTextColor;
    BYTE        bCharSet;
    BYTE        bPitchAndFamily;
    WCHAR       szFaceName[LF_FACESIZE];
    _WPAD       _wPad2;
    WORD        wWeight;
    SHORT       sSpacing;
    COLORREF    crBackColor;
    LCID        lcid;
    DWORD       dwReserved;
    SHORT       sStyle;
    WORD        wKerning;
    BYTE        bUnderlineType;
    BYTE        bAnimation;
    BYTE        bRevAuthor;
    BYTE        bReserved1;
} CHARFORMAT2;

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
WxWAuthor Commented:
Yes and why this code won't work ?

CharFormat.cbSize = sizeof(CharFormat);
::SendMessage(hW,EM_GETCHARFORMAT,false,(LPARAM)&CharFormat);
CharFormat.cbSize = sizeof(CharFormat);
ChararFormat.dwMask |= CFM_COLOR;
CharFormat.dwEffects &= ~(CFE_AUTOCOLOR);
CharFormat.yHeight = 0;
CharFormat.yOffset = 0;
CharFormat.crTextColor = GetRGB(TheColor1);
CharFormat.bCharSet = 0;
CharFormat.bPitchAndFamily = 0;
CharFormat.wWeight = 0;
CharFormat.sSpacing = 0;
CharFormat.crBackColor = GetRGB(TheColor2);
CharFormat.lcid = 0;
CharFormat.dwReserved = 0;
CharFormat.sStyle = 0;
CharFormat.wKerning = 0;
CharFormat.bUnderlineType = 0;
CharFormat.bAnimation = 0;
CharFormat.bRevAuthor = 0;
::SendMessage(hW,EM_SETCHARFORMAT,SCF_SELECTION,(LPARAM)&CharFormat);

Note the hW = richedit handle , GetRGB just a macro returning COLORREF values

0
Cloud Class® Course: Microsoft Exchange Server

The MCTS: Microsoft Exchange Server 2010 certification validates your skills in supporting the maintenance and administration of the Exchange servers in an enterprise environment. Learn everything you need to know with this course.

chensuCommented:
What do you mean by "this code won't work"? Compiling error or something else?

Make sure you are using CHARFORMAT2 and cbSize is sizeof(CHARFORMAT2).

0
WxWAuthor Commented:
I just mean that there are no compiling errors , but the Edit Control does not accept and recognize my color values . It does not recognize not only the BackGround color , but also the ForeGround . I believe that my code lacks a statement , but I do not know what
0
chensuCommented:
Are you using Rich Edit 2.0 (RichEd20.DLL)?
0
WxWAuthor Commented:
I discovered that I had not created a "Richedit20A" class , but a RichEdit 1.0 . However I have another problem now : The RichEdit I create seems inactive , and no-messages processing . Is there any special call I must use except the standard RichEdit 1.0 functions and messages ?
0
chensuCommented:
Did you call the LoadLibrary function to load the RICHED20.DLL before creating a rich edit control?
0
WxWAuthor Commented:
Thanks chensu . That was the problem . I have read also in the MSDN . If you can solve me the two more problems .... why the EM_SETSEL -1,-1 does not do the same like RichEdit 1.0 , but rather selects all the text . And b) , I want no-horizontal scroll bar . I want line breaking .Thanks a lot !!
0
chensuCommented:
1. Do you send the EM_SETSEL message with wParam == -1 and lParam == -1? If so, I don't know why. According to the documentation, "If nStart is –1, any current selection is removed.".

2. Remove the WS_HSCROLL style of the Rich Edit control.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C++

From novice to tech pro — start learning today.