RichTextBox control set document back color

Question

RichTextBox control set document back color

Peter Volz 1,295

Hello all

Visual Studio .Net 2010 project > .Net framework 4.0 Full profile project > WinForms

I need to process Rtf files and ONLY adding a document/page backcolor is needed.

So using RichTextBox I can load it but can't find a Page BG color property, is there any way?

If not, may I manually edit Rtf using File.ReadAllText and inject the Rtf background property? If yes what to insert where? Rtf version is basic, actually parsed from Outlook MapiMessage Rtf body part.

Thanks for the help.

Anonymous

2023-07-15T08:28:13.17+00:00

Hi

Maybe I am missing something but does RichTextBox1.BackColor = Color.MyColorChoice not do what you want?
RLWA32 49,551 Reputation points

2023-07-15T09:11:40.66+00:00

And you should be able to set the BackColor property in the form designer.

Peter Volz 1,295

Sorry, but RichTextBox1.BackColor is only to show the UI of control's back color at runtime and has no effect when saving as RTF file, once you save the RTF and open it with Wordpad or Word 2021, there's no back ground color, open it in Notepad and you'll see BackColor is not going to get saved in the RTF.

Anyway, assume we have this simple RTF:

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Microsoft Sans Serif;}}
\viewkind4\uc1\pard\f0\fs17 sss\par
}

I found some string to insert to RTF to get back color, but don't know where to insert it to have effect both in Wordpad and Word 2021:

{\*\background {\shp{\*\shpinst\shpleft0\shptop0\shpright0\shpbottom0\shpfhdr0\shpbxmargin\shpbxignore\shpbymargin\shpbyignore\shpwr0\shpwrk0\shpfblwtxt1\shpz0\shplid1025{\sp{\sn shapeType}{\sv 1}}{\sp{\sn fFlipH}{\sv 0}}{\sp{\sn fFlipV}{\sv 0}}{\sp{\sn fillColor}{\sv 3506515}}{\sp{\sn fFilled}{\sv 1}}{\sp{\sn lineWidth}{\sv 0}}{\sp{\sn fLine}{\sv 0}}{\sp{\sn bWMode}{\sv 9}}{\sp{\sn fBackground}{\sv 1}}{\sp{\sn fLayoutInCell}{\sv 1}}}}}

RLWA32 49,551 Reputation points

2023-07-15T16:49:21.59+00:00

Sorry, but RichTextBox1.BackColor is only to show the UI of >control's back color at runtime and has no effect when saving >as RTF file...

It would have been helpful if you had specified your actual objective in the posted question.

1 answer

Your answer

Anonymous

2023-07-15T08:28:13.17+00:00

Hi

Maybe I am missing something but does RichTextBox1.BackColor = Color.MyColorChoice not do what you want?
RLWA32 49,551 Reputation points

2023-07-15T09:11:40.66+00:00

And you should be able to set the BackColor property in the form designer.
Peter Volz 1,295 Reputation points

2023-07-15T16:12:27.2133333+00:00

Sorry, but RichTextBox1.BackColor is only to show the UI of control's back color at runtime and has no effect when saving as RTF file, once you save the RTF and open it with Wordpad or Word 2021, there's no back ground color, open it in Notepad and you'll see BackColor is not going to get saved in the RTF.

Anyway, assume we have this simple RTF:

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Microsoft Sans Serif;}} \viewkind4\uc1\pard\f0\fs17 sss\par }

I found some string to insert to RTF to get back color, but don't know where to insert it to have effect both in Wordpad and Word 2021:

{\*\background {\shp{\*\shpinst\shpleft0\shptop0\shpright0\shpbottom0\shpfhdr0\shpbxmargin\shpbxignore\shpbymargin\shpbyignore\shpwr0\shpwrk0\shpfblwtxt1\shpz0\shplid1025{\sp{\sn shapeType}{\sv 1}}{\sp{\sn fFlipH}{\sv 0}}{\sp{\sn fFlipV}{\sv 0}}{\sp{\sn fillColor}{\sv 3506515}}{\sp{\sn fFilled}{\sv 1}}{\sp{\sn lineWidth}{\sv 0}}{\sp{\sn fLine}{\sv 0}}{\sp{\sn bWMode}{\sv 9}}{\sp{\sn fBackground}{\sv 1}}{\sp{\sn fLayoutInCell}{\sv 1}}}}}
RLWA32 49,551 Reputation points

2023-07-15T16:49:21.59+00:00

Sorry, but RichTextBox1.BackColor is only to show the UI of >control's back color at runtime and has no effect when saving >as RTF file...

It would have been helpful if you had specified your actual objective in the posted question.

Answer 1

Castorix31 90,686

If I test with a minimal rtf sample like :

{\rtf1\ansi\ansicpg1252\deff0\deflang1033\deflangfe1041{\fonttbl{\f0\froman\fprq2\fcharset0 Times New Roman;}}
\pard\cf1\f0\fs24 This is a test\par
\par
}

I can add a background after the first line,like (16711935 is for Magenta) :

{\rtf1\ansi\ansicpg1252\deff0\deflang1033\deflangfe1041{\fonttbl{\f0\froman\fprq2\fcharset0 Times New Roman;}}
{\*\background {\sn fillColor}{\sv 16711935}}
\pard\cf1\f0\fs24 This is a test\par
\par
}

Peter Volz 1,295 Reputation points

2023-07-16T08:51:26.11+00:00

Thank you, it works great in Wordpad, but in Word 2021:

:(
Castorix31 90,686 Reputation points

2023-07-16T10:25:56.27+00:00
Ah yes... I tried to simplify progressively the background line

The previous test was :

\uc1{\*\background{{\* {\sp{\sn fillType}{\sv 0}} {\sp{\sn fillColor}{\sv 16711935}} {\sp{\sn fillBackColor}{\sv 1}} {\sp{\sn fillFocus}{\sv 0}} {\sp{\sn fillBlip}{\sv} }}}}

Word 2016 opens it... but without background color

When I add a background color to this simple rtf file with Word, it adds plenty of lines, not easy to isolate.
Castorix31 90,686 Reputation points

2023-07-16T12:17:39.79+00:00
In your other thread, Viorel found a syntax which works

Or by modifying the test above, Word 2016 displays the magenta background with :

\viewbksp1{\*\background{\shp{{\* {\sp{\sn fillType}{\sv 0}} {\sp{\sn fillColor}{\sv 16711935}} {\sp{\sn fillBackColor}{\sv 1}} {\sp{\sn fillFocus}{\sv 0}} {\sp{\sn fillBlip}{\sv} }}}}}

Peter Volz 1,295

Thanks @Castorix31

So my final version should be:

{\rtf1\ansi\ansicpg1252\deff0\deflang1033\deflangfe1041{\fonttbl{\f0\froman\fprq2\fcharset0 Times New Roman;}}
\viewbksp1{\*\background{\shp{{\*
{\sp{\sn fillType}{\sv 0}}
{\sp{\sn fillColor}{\sv 16711935}}
{\sp{\sn fillBackColor}{\sv 1}}
{\sp{\sn fillFocus}{\sv 0}}
{\sp{\sn fillBlip}{\sv}
}}}}}
\pard\cf1\f0\fs24 This is a test\par
\par
}

Just to convert an RGB color to decimal to use in here:

\viewbksp1{\*\background{\shp{{\*
{\sp{\sn fillType}{\sv 0}}
{\sp{\sn fillColor}{\sv 16711935}}
{\sp{\sn fillBackColor}{\sv 1}}
{\sp{\sn fillFocus}{\sv 0}}
{\sp{\sn fillBlip}{\sv}
}}}}}

I mean I might have any kind of RTF and need to inject this, any idea how to find where to insert it? :)

Castorix31 90,686 Reputation points

2023-07-17T15:22:17.1766667+00:00

I mean I might have any kind of RTF and need to inject this, any idea how to find where to insert it? :)

From the RTF specifications, groups are {}

If I insert the line for background just before the 2nd {, it seems to work.

(the first { is {\rtf)

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RichTextBox control set document back color

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