Contributor: BOB SWART
{
> Has anyone got a way around having mixed fonts within a memo component ?
You can use this rough TMemo derivative to experiment: }
unit Todrmemo;
interface
uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls;
type
TOwnerDrawMemo = class(TMemo)
private
{ Private declarations }
procedure WMPaint(var Message: TWMPaint); message WM_PAINT;
protected
{ Protected declarations }
public
{ Public declarations }
published
{ Published declarations }
end;
procedure Register;
implementation
procedure TOwnerDrawMemo.WMPaint(var Message: TWMPaint);
var Buffer: Array[0..255] of Char;
PS: TPaintStruct;
DC: HDC;
i: Integer;
X,Y,Z: Word;
OldColor: LongInt;
begin
DC := Message.DC;
if DC = 0 then DC := BeginPaint(Handle, PS);
try
X := 1;
Y := 1;
SetBkColor(DC, Color);
SetBkMode(DC, Transparent);
{ SetFont something or the other here... }
OldColor := Font.Color;
for i:=0 to Pred(Lines.Count) do
begin
if odd(i) then SetTextColor(DC, clRed)
else SetTextColor(DC, OldColor);
Z := Length(Lines[i]);
StrPCopy(Buffer, Lines[i]);
Buffer[Z] := #0; { not really needed }
TextOut(DC, X,Y, Buffer, Z);
Inc(Y, abs(Font.Height));
end;
finally
if Message.DC = 0 then EndPaint(Handle, PS);
end;
end;
procedure Register;
begin
RegisterComponents('Dr.Bob', [TOwnerDrawMemo]);
end;
end.