whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1548)

Database (90)
Files (137)
Forms (107)
Graphic (116)
IDE (21)
Indy (5)
Internet / LAN (131)
IntraWeb (0)
Math (76)
Misc (127)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (268)
VCL (243)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

29 Visitors Online


 
...use Subscript or Superscript in a TRichEdit?
Autor: Thomas Stutz
[ Print tip ]  

Tip Rating (54):  
     




// yOffset values
type
  
TCharacterFormat = (CFM_Superscript, CFM_Subscript, CFM_Normal);

procedure RE_SetCharFormat(RichEdit: TRichEdit; CharacterFormat: TCharacterFormat);
var
  
// The CHARFORMAT structure contains information about
  // character formatting in a rich edit control.
  
Format: TCharFormat;
begin
  
FillChar(Format, SizeOf(Format), 0);
  with Format do
  begin
    
cbSize := SizeOf(Format);
    dwMask := CFM_OFFSET;
    // Character offset, in twips, from the baseline.
    // If the value of this member is positive,
    // the character is a superscript;
    // if it is negative, the character is a subscript.
    
case CharacterFormat of
      
CFM_Superscript: yOffset := 60;
      CFM_Subscript: yOffset := -60;
      CFM_Normal: yOffset := 0;
    end;
  end;
  // The EM_SETCHARFORMAT message sets character formatting in a rich edit control.
  // SCF_SELECTION: Applies the formatting to the current selection
  
Richedit.Perform(EM_SETCHARFORMAT, SCF_SELECTION, Longint(@Format));
end;

// Examples:
// Beispiele:

// Apply Superscript to the current selection
// Markierte Zeichen hoch stellen
procedure TForm1.Button1Click(Sender: TObject);
begin
  
RE_SetCharFormat(RichEdit1, CFM_Superscript);
end;

// Apply Subscript to the current selection
// Markierte Zeichen tief stellen
procedure TForm1.Button2Click(Sender: TObject);
begin
  
RE_SetCharFormat(RichEdit1, CFM_Subscript);
end;


 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners